EXHIBIT 10.22(a)


                      DATED 18TH JANUARY 2001







                        astrazeneca ab (1)
                 ---------------------------------


                  MAILLEFER INSTRUMENTS HOLDINGS
                             S.A. (2)

                 ----------------------------------

                     AZLAD PRODUCTS agreement
                 ----------------------------------




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THIS AGREEMENT is made on 18TH JANUARY 2001

BETWEEN:

(1)      astrazeneca ab a company  incorporated under the laws of
         Sweden  and  having  its  principal  office at SE-151 85
         Sodertalje, Sweden ("AZ"), and

(2)      MAILLEFER   INSTRUMENTS   HOLDINGS    S.A.,   a  company
         incorporated  under the laws of  Switzerland  and having
         its  principal  office at  Chemin  du Verger 3,  CH-1338
         Ballaigues, Switzerland (the "Purchaser").

BACKGROUND

A.       AZ has developed and  manufactures and sells worldwide a
         range of injectable  dental local  anaesthetic  products
         and  has  registered  various  trade  marks  in  respect
         thereof.

B.       AZ has agreed  with the  Purchaser  on the terms  herein
         contained:

         (i)     to grant to the  Purchaser  a  permanent,  fully
                 paid  licence to use the  Technical  Information
                 (as hereafter  defined) to develop,  manufacture
                 and sell  injectable  dental  local  anaesthetic
                 products   in  the   Territory   (as   hereafter
                 defined);

         (ii)    to grant to the  Purchaser  a  permanent,  fully
                 paid  licence  to use  certain  trade  marks  in
                 respect  of  specific  injectable  dental  local
                 anaesthetic products; and

         (iii)   to   manufacture    injectable    dental   local
                 anaesthetic  products  for the  Purchaser  for a
                 limited period of time.

C.       AZ is  also  developing  but  has  not  yet  launched  a
         non-injectable  periodontal anaesthetic product known as
         Oraqix  intended for use as a local  anaesthetic  in the
         treatment  of  periodontitis  and has  agreed  with  the
         Purchaser  to grant to the  Purchaser  rights in respect
         of  Oraqix   products  in  accordance  with  the  Oraqix
         Agreement (as hereafter defined).


                                      178



NOW THEREFORE IT IS AGREED as follows:

1.       DEFINITIONS

1.1      In this Agreement:

         (i)     the  term  "this   Agreement"  shall  mean  this
                 Agreement  and  any  Schedules  and   amendments
                 hereto,

         (ii)    the terms "AZ" and  "Purchaser"  and  references
                 to  the  "Parties"  shall,  unless  the  context
                 otherwise  requires,  mean AZ and its Affiliates
                 or any one of them  and  the  Purchaser  and its
                 Affiliates  or any  one of  them  and  the  term
                 "Party" shall be construed accordingly.

1.2      In this  Agreement  the  following  terms shall have the
         following meanings:

         "Affiliate"  means any corporation,  partnership,  joint
         venture,  limited  liability  company or other  business
         entity now or hereafter  controlling,  controlled  by or
         under  common  control  with AZ or the  Purchaser as the
         case  may be and for  the  purposes  of this  definition
         "control"  means  the  possession,   whether  direct  or
         indirect,   of  the  power  to  direct  the   management
         policies  of a  business  entity,  whether  through  the
         ownership  of a majority  of the voting  rights in it or
         by contract.

         "Agreement  Date"  means the date of this  Agreement  as
         shown above.

         "Ancilliary   Items"   means   the   devices   for   the
         administration  of AZLAD  Products  and the other  items
         listed in Schedule 1.

         "Applicable  LIBOR" means the relevant LIBOR rate, which
         initially  shall be the  LIBOR  rate  published  on 28th
         February 2001, but if and whenever  thereafter the LIBOR
         rate  published  on the  last  business  day of a  month
         shall  vary by at least one  percentage  point  from the
         then  current  Applicable  LIBOR,  shall be increased or
         reduced as the case may be to the LIBOR  rate  published
         on such subsequent date.



                                      179





         "AZLAD  Products"  means the LAD  Products  manufactured
         and/or  sold  by  AZ  listed  in  Schedules  8 and 9 and
         described  in  the  Marketing  Authorisations  for  such
         products.

         "AZLAD  Products  Manufacturing   Agreement"  means  the
         agreement  relating to the manufacture of AZLAD Products
         by AZ  for  the  Purchaser  to be  entered  into  by the
         Parties on the Agreement Date in accordance  with clause
         6.1.

         "AZ  Marketing   Authorisations"   means  the  Marketing
         Authorisations  granted to AZ in the  Territory  for the
         sale of AZLAD  Products,  including  or  comprising  the
         Marketing Authorisations listed in Schedule 10.

         "AZ  Trade  Marks"  means  the  trade  marks  listed  in
         Schedule 2, Part A.

         "AZ Trade Marks Licence  Agreement"  means the agreement
         relating  to the  licensing  of the AZ Trade Marks by AZ
         to the  Purchaser  to be entered  into by the Parties on
         the Agreement Date in accordance with clause 3.

         "Combined  Gross  Sales"  means the  aggregate  combined
         Gross Sales of LAD Products and Oraqix Products.

         "Competent  Authority"  means in respect of each Country
         the  competent  regulatory  authority  for the  grant of
         Marketing  Authorisations and/or manufacturing  licences
         and  approval  of  applications   for  the  transfer  of
         Marketing Authorisations

         "Consideration"  means the Fixed  Consideration  and the
         Contingent Consideration.

         "Contingent  Consideration"  means the sum determined by
         reference  to the month in which the Payment  Date shall
         occur, calculated in accordance with clause 5.3.

         "Contract Manufacturers" means Fujisawa and Pierrel.


                                      180


         "Contract Payment Date" means the earliest of:

         (i)     the date  which is 14 days  after the  Purchaser
                 shall have  reported  to AZ in  accordance  with
                 clause 5.5, or the  independent  accounting firm
                 referred to in clause 5.6,  shall have  reported
                 to AZ  and  the  Purchaser  in  accordance  with
                 clause 5.6 that the Combined  Gross Sales in any
                 Relevant   Period   shall  have   exceeded   the
                 Relevant Target; and

         (ii)    the date  which is 14 days  after  the date when
                 the condition  contained in clause 5.4(ii) shall
                 be fulfilled; and

         (iii)   the date  which is 14 days  after the date when
                 AZ shall  receive from the bank or other issuer
                 of the  Letter  of  Credit  such  notice  as is
                 referred to in clause 5.4(iii).

         "Cost of Goods" means

         (i)     in respect  of AZLAD  Products  manufactured  by
                 AZ, AZ's  ex-works  prices as shown in the price
                 lists, by manufacturing  location,  contained in
                 Schedule 3;

         (ii)    in respect of AZLAD Products  manufactured  by a
                 Contract  Manufacturer,   AZ's  direct  purchase
                 costs  under  the  contract  with  the  Contract
                 Manufacturer  for the  manufacture and supply of
                 such  products  plus  the  cost  of  the  active
                 ingredient   supplied  by  AZ  to  the  Contract
                 Manufacturer,  the costs  applying in 2001 being
                 shown in Schedule 3;

         (iii)   in the  event of AZ  purchasing  AZLAD  Products
                 from the  Purchaser  during the  period  between
                 the Effective Date and the Transfer  Date,  AZ's
                 direct purchase costs; and

         (iv)    in  respect of  Ancilliary  Items,  AZ's  direct
                 purchase costs under  contracts for the purchase
                 of such items.


                                      181


         All costs quoted in local  currencies shall be converted
         into US dollars by AZ in  accordance  with its  standard
         accounting   policies   approved   by  its   independent
         auditors for use in its financial statements.

         "Country" means a country within the Territory.

         "Dental   Products"   means   injectable   dental  local
         anaesthetic  drug  products,  being  medicinal  products
         designed  for  and  placed  on  the  market  solely  and
         specifically  for use by dentists,  periodontists,  oral
         surgeons and other  practitioners  of  dentistry.  It is
         agreed  that  LAD  Products  are  Dental  Products,  but
         multi-use    vials,    glass    ampoules   and   topical
         formulations  are not Dental Products for the purpose of
         this definition.

         "Effective Date" means 1st March 2001.

         "Existing  Contracts"  means Existing  Dental  Contracts
         and Existing General Contracts.

         "Existing Dental  Contracts" means the agreements listed
         in Schedule 5, Part A.

         "Existing   General   Contracts"  means  the  agreements
         listed in Schedule 5, Part B.

         "Fixed  Consideration"  means  the sum of  US$96,500,000
         (ninety-six million, five hundred thousand US dollars).

         "Force  Majeure"  means  any  circumstances  beyond  the
         control of a Party, including strikes,  lockouts,  civil
         commotion,    accidents,   wars,   acts   of   God   and
         governmental regulations.

         "Fujisawa"   means   Fujisawa   Pharmaceutical   Company
         Limited.

         "General Transfer  Arrangements"  means the arrangements
         for the provision of the Regulatory Know-How,  Technical
         Information  and  Marketing  Data by AZ to the Purchaser
         and the transfer of the AZ Marketing  Authorisations set
         out in Schedule 4.


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         "GMP"  means  the  requirements  set  out in  the  World
         Health  Organisation  code on  "Good  Practices  for the
         Manufacture  and Quality  Control of Drugs" and/or other
         applicable  regulations  in the  Country of  manufacture
         concerning the manufacture,  formulation,  processing or
         packaging of pharmaceutical products.

         "Gross   Sales"   means  the   aggregate   sales  prices
         (excluding  VAT or other  sales  taxes) of LAD  Products
         and  Oraqix   Products  sold  by  either  Party  or  its
         Affiliates  or  licensees  subsequent  to the  Effective
         Date as shown in its  financial  statements  prepared in
         accordance with US GAAP or other  applicable  accounting
         standards.

         Any product  sold or  otherwise  transferred  (excluding
         supplies of clinical  trial material or free samples) in
         other  than an arm's  length  transaction  or for  other
         property (e.g.  barter) shall be deemed sold at its fair
         market price in the Country of sale or transfer.

         "Gross  Sales"  shall  exclude  sales or  transfers of a
         product  between the Purchaser (or,  where  appropriate,
         AZ) and their  Affiliates  and  licensees or between the
         Parties  unless the  receiving  party is the consumer or
         user of the product;  however,  the resale or retransfer
         of such  product to a third  party  shall be included in
         "Gross Sales".

         References to  "licensees"  shall  exclude  distributors
         whose function is to purchase and resell products.

         Gross  Sales  made in a  currency  other than US dollars
         shall be converted  from local currency to US dollars by
         the Purchaser (or, where appropriate,  AZ) in accordance
         with its standard  accounting  policies  approved by its
         independent   auditors   for   use  in   its   financial
         statements.

         "LAD Product  Category" means a LAD Product category set
         out in Schedule 2, Part A.


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         "LAD Products" means  cartridges  containing  injectable
         dental local anaesthetic drug products,  being medicinal
         products  designed  for and placed on the market  solely
         and  specifically  for use by  dentists,  periodontists,
         oral surgeons and other practitioners of dentistry.

         "Letter of Credit"  means the letter of credit  referred
         to in clause 5.10 or any letter of credit  issued to AZ
         by way of substitution for or renewal of such letter of
         credit.

         "LIBOR"   means  the  30  days  US  dollar   BBA  London
         Interbank Offered Rate as published by Reuters.

         "Marketing   Authorisations"   means  the  registrations
         granted by the  Competent  Authorities  in the Territory
         for the sale of LAD Products and, where applicable,  for
         approval  of prices and cost  reimbursements,  and where
         the context  admits shall include any  modifications  or
         replacements thereof.

         "Marketing  Data"  means  the  information  relating  to
         AZLAD Products listed in Schedule 4, Part C.

         "Net Sales" means the aggregate  gross invoice prices of
         products  sold  by AZ or  its  Affiliates  or  licensees
         after   deducting   VAT,   consumption   tax  and  other
         governmental   duties,  fees  and  charges,   trade  and
         quantity  discounts,  returns and  allowances,  rebates,
         charge  backs and other  post-sale  performance  related
         rebates, and retroactive price reductions,  and less all
         transportation,  insurance and brokerage  costs relating
         to the products  after  release  from the  manufacturing
         site.  For the purpose of computing  Net Sales sold in a
         currency  other then US dollars,  such currency shall be
         converted  from  local  currency  to US dollars by AZ in
         accordance   with  its  standard   accounting   policies
         approved  by its  independent  auditors  for  use in its
         financial statements.

         "Oraqix  Agreement" means the agreement  relating to the
         grant by AZ to the  Purchaser  of rights in  respect  of
         the  non-injectable   periodontal   anaesthetic  product
         known as Oraqix to be  entered  into by the  Parties  on
         the Agreement Date in accordance with clause 11.1.


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         "Oraqix  Manufacturing  Agreement"  means the  agreement
         relating  to the  manufacture  of Oraqix  Products by AZ
         for the  Purchaser  to be entered into by the Parties on
         the  Agreement  Date  in  accordance   with  the  Oraqix
         Agreement.

         "Oraqix  Products" has the same meaning as in the Oraqix
         Agreement.

         "Payment  Date"  means the date on which  the  Purchaser
         shall pay the Contingent Consideration to AZ.

         "Pierrel" means Pierrel Farmaceutics S.p.A.

         "Product    Formulations"   means   the   pharmaceutical
         formulations of AZLAD Products listed in Schedule 8.

         "Product  Packs" means the shelf  keeping units of AZLAD
         Products listed in Schedule 9.

         "Regulatory  Know-How" means the  information  contained
         in the  current  approved  regulatory  dossier  for each
         Product  Formulation  as filed in each  Country  and any
         additional  information  contained  in the current  core
         regulatory  dossiers for each Product  Formulation  held
         by AZ.

         "Relevant Period" means:

         (i)     during  the first 12 months  from the  Effective
                 Date,  the number of calendar  months (not being
                 less than 4 months)  from such date which  shall
                 have expired; and

         (ii)    thereafter,  any  period of 12  calendar  months
                 ending after 28th February 2002.

         "Relevant  Target" means in respect of a Relevant Period
         the amount of  Combined  Gross  Sales for such  Relevant
         Period as set out in Schedule 13, Part A.


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         "Safety   Information   Exchange  Agreement"  means  the
         agreement   to  be  entered   into  by  the  Parties  in
         accordance with clause 8.3.

         "Technical  Information" means the technical information
         required for the  manufacture,  analysis,  packaging and
         storage  of  AZLAD  Products  contained  in the  current
         manufacturing  binders for each Product Formulation held
         by each of AZ's  production  plants and any revisions of
         such  information  made  during  the  term of the  AZLAD
         Products Manufacturing Agreement.

         "Territory" means the World,  excluding India,  subject
         to clause 7.6.

         "Transfer Date" means

         (i)     in the case of each  Country  and  Product  Pack
                 for  which  AZ  shall   hold  an  AZ   Marketing
                 Authorisation,   the  date  when  the  Competent
                 Authority  shall  approve  the  transfer  of the
                 Marketing  Authorisation  into  the  name of the
                 Purchaser  or its  nominee  or  shall  grant  in
                 place thereof a new Marketing  Authorisation  in
                 the name of the  Purchaser  or its  nominee,  or
                 such  earlier date when the  Purchaser  shall be
                 able to commence  selling  the  Product  Pack in
                 the  Country,  whether  as AZ's  distributor  or
                 otherwise; and

         (ii)    subject  to  clause  4  relating   to   Existing
                 Contracts,  in all other  cases,  the  Effective
                 Date or such  later date when the  Purchaser  or
                 its  distributor  or  agent  shall  be  able  to
                 commence   selling  the  Product   Pack  in  the
                 Country.

         "Transferring  Employees"  means the employees listed in
         Schedule 6.

         "Warranties"  means the  warranties  contained in clause
         13.1.


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         "Warranty  Claim" means any claim made by the  Purchaser
         or any person deriving title from the Purchaser  against
         AZ under the Warranties.

1.3      In this  Agreement,  where  appropriate,  words denoting
         the  masculine  gender  shall  include the  feminine and
         neuter   genders  and  vice  versa;   words  denoting  a
         singular  number  shall  include  the  plural  and  vice
         versa;  references to the definite article shall include
         the  indefinite  article and vice versa;  references  to
         persons  shall  include   firms,   companies  and  other
         organisations  and vice versa;  words such as  "include"
         or "including" are to be construed  without limiting the
         generality  of the  preceding  words and  references  to
         "from" any date shall  mean  "from and  including"  such
         date.

2.       TECHNICAL INFORMATION LICENCE

2.1      With effect from the  Effective  Date,  AZ grants to the
         Purchaser a permanent,  royalty-free  licence to use the
         Technical  Information  for the  purpose of  developing,
         manufacturing,  having manufactured,  using, selling and
         dealing  in  the  Territory  in  Dental  Products,  such
         licence to be exclusive  (subject to clause 4.1) for the
         period   of   ten   years   and    thereafter    to   be
         non-exclusive.  After the  expiry  of such  period of 10
         years,   the   restriction   on  use  of  the  Technical
         Information by the Purchaser  shall cease.  It is agreed
         that the rights hereby  granted to the  Purchaser  shall
         not at any time  preclude  AZ from  using the  Technical
         Information  in respect of  products  other than  Dental
         Products.

3.       AZ TRADE MARKS LICENCE AND ASSIGNMENT

3.1      On the Agreement  Date, the Parties shall enter into the
         AZ Trade Marks Licence Agreement.


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3.2      Within  90 days  after  the  Effective  Date,  AZ  shall
         assign to the  Purchaser  the AZ Trade Marks  NUROCAIN(R),
         XYLOTOX(R) and  LIGNOSTAB(R)  and all  goodwill  therein but
         without  the  goodwill  of the  business in the goods in
         respect of which such trade marks are  registered in all
         Countries in which they are  registered  by AZ as listed
         in Schedule 2, Part B and shall assign to the  Purchaser
         its right and  interest  in such AZ Trade Marks in other
         Countries  where they are used by AZ in respect of AZLAD
         Products   as  listed  in   Schedule  2,  Part  C.  Such
         assignments  shall be in the form set out in Schedule 12
         or in such other form to be agreed  between  the Parties
         based so far as  practicable on the form set out in such
         Schedule as shall be appropriate for assignment and, as
         applicable,  registration  purposes  in such  Countries.
         The  Purchaser   shall  register  such   assignments  in
         respect  of  the   registered  AZ  Trade  Marks  at  the
         relevant registries at its own expense.

3.3      To the  extent  that AZ is able  to do so,  with  effect
         from the  Effective  Date AZ grants to the Purchaser the
         right to use the colour  coding and trade dress of AZLAD
         Products  in use at the  Effective  Date  in  connection
         with the relevant LAD Products  manufactured and sold by
         the Purchaser.

4.       EXISTING CONTRACTS

4.1      The  rights  granted  by AZ to the  Purchaser  under  or
         pursuant  to this  Agreement  shall  be  subject  to the
         Existing Contracts.

4.2      The  Parties   recognise   that  the   Existing   Dental
         Contracts   relate  to  Dental  Products  only  and  the
         Existing  General  Contracts  relate to Dental  Products
         and other products.  The Parties further  recognise that
         some or all of the Existing Dental  Contracts may not be
         assignable  by AZ to the  Purchaser  without the consent
         of the other party thereto.


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4.3      In the case of each Existing  Dental  Contract  which is
         assignable  by AZ to the  Purchaser  without the consent
         of  the  other  party  thereto,   AZ  shall  assign  the
         Existing  Dental  Contract to the Purchaser  with effect
         from  the  Effective  Date.  Under  the  terms  of  such
         assignment,    all    receivables,    expenditure    and
         liabilities  arising under the Existing  Dental Contract
         in respect of any act,  omission,  event or period up to
         the  Effective  Date  shall be payable to or borne by AZ
         and  all   receivables,   expenditure   and  liabilities
         arising  under the Existing  Dental  Contract in respect
         of any act,  omission,  event or  period on or after the
         Effective  Date  shall  be  payable  to or  borne by the
         Purchaser.

4.4      In the case of each Existing  Dental  Contract  which is
         not  assignable  by  AZ to  the  Purchaser  without  the
         consent  of the other  party  thereto,  AZ shall use its
         reasonable  endeavours  to obtain  such  consent for the
         assignment  of  the  Existing  Dental  Contract  to  the
         Purchaser on the terms set out in clause 4.3.

4.5      In the case of each Existing General Contract,  AZ shall
         use its  reasonable  endeavours  to  persuade  the other
         party  thereto  to enter  into new  agreements  with the
         Purchaser  and AZ with  effect from the  Effective  Date
         relating   to  Dental   Products   and  other   products
         respectively  in substitution  for the Existing  General
         Contract,  the new agreement relating to Dental Products
         being  on  the  same  terms  mutatis   mutandis  as  the
         Existing  General  Contract and in  accordance  with the
         terms set out in clause 4.3.

4.6      In the case of any  Existing  Dental  Contract  where AZ
         shall fail to obtain the  consent of the other  party to
         the  assignment of the Existing  Dental  Contract on the
         terms  stated  in  clause  4.4,  and in the  case of any
         Existing   General  Contract  where  AZ  shall  fail  to
         persuade  the other  party to enter into  agreements  on
         the terms  stated  in  clause  4.5,  the  Parties  shall
         co-operate   with  each  other  so  as  to  provide  the
         Purchaser  with  effect from the  Effective  Date to the
         greatest  extent possible with the benefit and burden of
         the  Existing  Contract  so far as it  relates to Dental
         Products.



                                      189




4.7      The  provisions of clause 4.6 shall not preclude AZ from
         exercising any right to terminate an Existing  Contract,
         provided  that  before  exercising  such  right it shall
         consult  with  the   Purchaser  as  soon  as  reasonably
         practicable  and in such  consultation  each Party shall
         have  due  regard  to the  commercial  interests  of the
         other Party,  provided that significant  weight shall be
         given to the objective of clause 4.6.

5.       CONSIDERATION

5.1      Subject and without prejudice to:

         (i)     the   provisions  of  clause  8  of  the  Oraqix
                 Agreement   relating   to  the  payment  by  the
                 Purchaser  to AZ in  the  circumstances  therein
                 stated  of   certain   milestone   and   royalty
                 payments, and

         (ii)    any   other   provisions   contained   in   this
                 Agreement   or   any   supplemental    agreement
                 requiring  the Purchaser to bear any costs or to
                 pay or reimburse any sums to AZ

         the  Consideration  comprises  the entire  consideration
         payable by the  Purchaser  to AZ for the rights  granted
         by AZ to the  Purchaser  under  this  Agreement  and the
         AZLAD  Products  Manufacturing  Agreement,  the AZ Trade
         Marks Licence  Agreement,  the Oraqix  Agreement and the
         Oraqix    Manufacturing    Agreement,    including   the
         consideration   for  the   sale  of  the   manufacturing
         equipment  owned  by AZ to be  transferred  by AZ to the
         Purchaser  in   accordance   with  the  AZLAD   Products
         Manufacturing  Agreement  and the  Oraqix  Manufacturing
         Agreement when it ceases to  manufacture  AZLAD Products
         or  Oraqix  Products  (as  the  case  may  be)  for  the
         Purchaser  in  accordance  with  such  Agreements.   The
         proportion  of the  Consideration  attributable  to such
         manufacturing  equipment shall be an amount equal to the
         value  of such  equipment  at the date of  transfer  as
         agreed between the Parties or, in default of agreement,
         determined by an independent  expert and AZ shall render
         invoices  for  such   manufacturing   equipment  to  the
         Purchaser  or its  nominee at the date of  transfer.  It
         is  recognised  that  the net  purchase  price  for such
         equipment  shall  have  been  paid as part of the  Fixed
         Consideration,  but,  depending  on the  identity of the
         purchaser  and  seller,  MOMS or other  sales  taxes may
         additionally be payable at the time of transfer.


                                      190



5.2      The  Fixed  Consideration  shall  be paid in full on the
         Effective Date by telegraphic  transfer to the following
         bank account:

                 Bank Name:      SEB Stockholm
                 Account No:     5201 8232029
                 Swift:          ESSE SESS.

5.3      The Contingent  Consideration shall be a sum which shall
         increase on a monthly basis as follows:

         (i)     In the first  calendar month after the Effective
                 Date,  that is in March 2001,  the amount of the
                 Contingent  Consideration shall be US$20,000,000
                 (twenty million US dollars).

         (ii)    At the start of each succeeding  calendar month,
                 the  amount  of  the  Contingent   Consideration
                 shall  be  increased  on  a  compound  basis  by
                 Applicable  LIBOR  multiplied  by  30/360.   The
                 table   contained   in   Schedule   13,  Part  B
                 illustrates  what the  amount of the  Contingent
                 Consideration  would  be in  each  month  in the
                 period  from  the  Effective   Date  until  31st
                 December  2002 if  Applicable  LIBOR  was at all
                 times 6.5%.

5.4      The  Contingent  Consideration  shall be payable in full
         in any of the following cases:

         (i)     if in any  Relevant  Period the  Combined  Gross
                 Sales shall exceed the Relevant Target; or


                                      191


         (ii)    if at any time the  Purchaser  shall  dispose of
                 or  discontinue  the whole or a material part of
                 its  business of selling LAD Products and Oraqix
                 Products.  For the  purpose  of  this  paragraph
                 (ii),  the  Purchaser  shall be  deemed  to have
                 disposed of or  discontinued  a material part of
                 such  business  if in any period of 12 months it
                 shall  cease  to sell  in one or more  Countries
                 certain  Product  Packs and/or  Oraqix  Products
                 (otherwise  than as part of a bona fide  product
                 rationalisation  programme  designed to increase
                 sales)  and  in  the  preceding   period  of  12
                 months,  whether  falling  before  or after  the
                 Agreement  Date,  the  Combined  Gross  Sales of
                 such  Product  Packs and Oraqix  Products in the
                 said Countries  shall have  represented not less
                 than  5% of  Combined  Gross  Sales  of all  LAD
                 Products  and Oraqix  Products in the  Territory
                 in   such   period.    Until   the    Contingent
                 Consideration   shall   have  been   paid,   the
                 Purchaser  shall  inform AZ in  writing  of each
                 disposal  or  discontinuance  of any part of its
                 business  of  selling  LAD  Products  and Oraqix
                 Products  and  shall  provide  AZ  on a  monthly
                 basis with the Gross Sales information  required
                 by  AZ  to  ascertain   whether  the   condition
                 contained  in this  clause  5.4(ii)  shall  have
                 been fulfilled; or

         (iii)   if the bank specified in Schedule 13, Part C or
                 other issuer of the Letter of Credit shall give
                 to AZ notice in  writing  that it elects not to
                 consider  the  Letter of Credit  automatically
                 extended  on the  next  expiry  date,  being an
                 expiry date prior to 1st March 2008.

5.5      Within  60  days  after  the  end  of  each  month,  the
         Purchaser  shall  give  to AZ a  written  report  of the
         Combined   Gross  Sales  during  the   Relevant   Period
         expiring at the end of such month.

5.6


                                      192



The  Purchaser  shall keep accurate  records in  accordance  with
         applicable  generally  accepted  accounting   principles
         showing  the  information  which  is  necessary  for the
         accurate  determination  of Gross  Sales.  Such  records
         shall  be kept at the  Purchaser's  principal  place  of
         business or other  location  approved by AZ for at least
         5 years from the end of the calendar  year to which they
         pertain.  The  Purchaser  agrees to  permit a  certified
         public  accountant  or  a  person   possessing   similar
         professional  status and associated  with an independent
         accounting  firm  acceptable  to the  Parties to inspect
         such records during regular  business hours to check the
         accuracy  of  the  reports  given  by the  Purchaser  in
         accordance   with   clauses   5.4(ii)   and   5.5.   The
         accounting    firm   shall   enter   into    appropriate
         obligations  with the Purchaser to treat all information
         it receives  during its  inspection in  confidence.  The
         accounting  firm shall  disclose to AZ and the Purchaser
         only whether the Gross Sales'  reports of the  Purchaser
         are correct and details  concerning  any  discrepancies,
         but no other  information  shall be disclosed to AZ. The
         charges  of the  independent  accounting  firm  shall be
         paid  by  AZ,  except  if  the  Gross  Sales  have  been
         mis-stated  by more  than 2 per cent in  which  case the
         charges shall be paid by the Purchaser.

5.7      The Purchaser shall pay the Contingent  Consideration to
         AZ on the Contract  Payment Date or on such earlier date
         as the  Purchaser,  by notice in writing  given to AZ on
         or after 1st July 2001, shall stipulate.

5.8      The   Contingent   Consideration   shall   be   paid  by
         telegraphic  transfer to the bank account referred to in
         clause  5.2  or to  such  other  bank  account  as AZ by
         notice in writing to the Purchaser shall designate.

5.9      The  Contingent  Consideration  shall not be  payable if
         neither of the conditions  contained in clause 5.4 shall
         be fulfilled,  provided that in no  circumstances  shall
         the  Contingent  Consideration  be  repayable if paid by
         the   Purchaser   prior  to  the   fulfilment   of  such
         conditions.



                                      193




5.10     As security for the  Purchaser's  contingent  obligation
         to pay the Contingent  Consideration the Purchaser shall
         at its own expense procure for the exclusive  benefit of
         AZ and  shall  deliver  to AZ on the  Effective  Date an
         irrevocable  letter of credit from the bank specified in
         Schedule  13, Part C in the form set out in Schedule 13,
         Part C.

5.11     All sums  payable  under  this  Agreement  shall be paid
         without deduction of any bank or transfer  charges.  All
         sums are net of MOMS (i.e.  Swedish value added tax) and
         other  similar  sales  taxes  which  shall  be  added if
         appropriate.  All sums shall be paid  without  deduction
         for  any  tax or  duty  levied  outside  Sweden,  unless
         applicable  laws require  that taxes be withheld.  Gross
         up  shall  not be made by the  Purchaser  to the  extent
         that  AZ  can  obtain  relief,   including   credits  or
         exemptions,  for such taxes  under the  relevant  Double
         Taxation  Agreement  or  Swedish  law  but,  if no  such
         relief is available,  the  Purchaser  shall gross up the
         payment  so that AZ  shall  receive  the net  amount  to
         which  it  is  entitled.  The  Purchaser  and  AZ  shall
         mutually  co-operate  to apply any treaty relief that is
         available  which reduces the level of taxes  required to
         be withheld.  If  applicable  laws require that taxes be
         withheld,  the  Purchaser  will deduct  those taxes from
         the  remittable  payments,  make  timely  payment of the
         taxes to the proper  taxing  authority and send proof of
         such  payment  to AZ within  sixty days  following  that
         payment.   The  Purchaser   agrees  to  take  all  steps
         reasonably  requested  by AZ to  minimise  such taxes to
         AZ.

5.12     Each Party shall  reimburse to the other Party within 60
         days  of  receipt  of  the  other  Party's  invoice  any
         expenses  borne by such  other  Party  which  under  the
         terms of this  Agreement  the  first  Party is liable to
         reimburse.

5.13     In  the   event  of  any   delay  in   payment   of  the
         Consideration  or  reimbursement  of  any  expenses  and
         without  prejudice  to  any  other  remedies  available,
         interest  shall be  payable  at LIBOR plus 3% or, in the
         case of the Contingent Consideration at LIBOR plus 5%.



                                      194




5.14     This Agreement shall be conditional upon:

         (i)     the Purchaser paying the Fixed  Consideration to
                 AZ in full on the Effective Date, and

         (ii)    the  Purchaser  delivering  the  original,  duly
                 executed   Letter   of   Credit  to  AZ  on  the
                 Effective Date.

         In the event  that any  default  in payment of the Fixed
         Consideration  or delivery of the Letter of Credit shall
         continue  for more than seven  days after the  Effective
         Date,  AZ shall be entitled to cancel this  Agreement by
         written  notice to the  Purchaser  without  prejudice to
         any  other  right or  remedy  of AZ in  respect  of such
         breach.  In the  event of such  cancellation,  the AZLAD
         Products  Manufacturing  Agreement,  the AZ Trade  Marks
         Licence  Agreement,  the Oraqix Agreement and the Oraqix
         Manufacturing    Agreement   shall    automatically   be
         cancelled  at  the  same  time  and  the  Parties  shall
         execute  any  documents  which shall be  appropriate  to
         give effect to such cancellation.

6.       AZLAD PRODUCTS MANUFACTURING AGREEMENT

6.1      On the Agreement  Date, the Parties shall enter into the
         AZLAD Products  Manufacturing  Agreement relating to the
         manufacture  and  packaging of AZLAD  Products by AZ for
         the Purchaser.

7.       TRANSFER OF AZ MARKETING AUTHORISATIONS



                                      195




7.1      The   Purchaser,   or  AZ  in   co-operation   with  the
         Purchaser,   shall   make  such   applications   to  the
         Competent  Authorities  in the  Territory  as  shall  be
         necessary  for  the  purpose  of  transferring   the  AZ
         Marketing   Authorisations   to  the  Purchaser  or,  if
         appropriate,    for   the   grant   of   new   Marketing
         Authorisations  in  the  name  of the  Purchaser  or its
         nominee in place thereof,  such  applications to be made
         to the extent  reasonably  possible within 90 days after
         the  Agreement  Date.  If AZ  shall be  obliged  to make
         such  application,  the Purchaser  shall provide it with
         such  information  and assistance as shall be necessary.
         The  duties  of  each  Party  are  further  detailed  in
         Schedule  4, Part D. The Party  responsible  for  making
         the  application  shall notify the other Party  promptly
         of the date when the transfer is effected.

7.2      Pending  and  until  the  transfer  of the AZ  Marketing
         Authorisations   or   the   grant   of   new   Marketing
         Authorisations  in  place  thereof  and  subject  to the
         Purchaser  diligently  performing its obligations  under
         clause  7.1,  AZ  shall   maintain   the  AZ   Marketing
         Authorisations  in  force,  but AZ's  obligations  under
         this  clause  7.2  shall  cease  upon the  expiry  of 36
         months from the Effective Date.

7.3      All fees payable to the Competent  Authorities  relating
         to the  transfer of the AZ Marketing  Authorisations  or
         the  grant  of new  Marketing  Authorisations  in  place
         thereof  or  the   maintenance   of  the  AZ   Marketing
         Authorisations  after the Effective  Date shall be borne
         by the Purchaser.

7.4      The  provisions  of clauses 7.1 to 7.3 shall be subject,
         where   applicable,   to  the  provisions  of  clause  4
         relating to the Existing Contracts.

7.5      In the case of any Country  and  Product  Pack for which
         the Marketing  Authorisation for AZLAD Products shall be
         held by a third party at the Effective  Date,  and where
         the  provisions  of the  Existing  Contracts  shall not
         apply,   AZ  shall  provide  such  assistance  to  the
         Purchaser  as it may  reasonably  require  in  order to
         enable  it to sell  such  Product  Packs or to have the
         benefit of existing sales arrangements for such Product
         Packs in such Country.



                                      196




7.6      In the case of Libya and  Iraq,  the  Purchaser  may by
         notice in writing  to AZ given on or before  15th March
         2001  decline to accept  the grant of any rights  under
         this  Agreement  in  respect  of  either  or both  such
         Countries.  In such  event,  this  Agreement  shall  be
         construed  as  if  the  definition  of  the  Territory
         excluded such Country or Countries.

8.       GENERAL TRANSFER ARRANGEMENTS

8.1      The  transfer  of  the  Regulatory  Know-How,  Technical
         Information  and  Marketing  Data by AZ to the Purchaser
         shall be  effected  on a  Country  by  Country  basis in
         accordance with the General Transfer Arrangements.

8.2      AZ  shall  provide  the  Purchaser   with  such  further
         assistance  as  may   reasonably  be  requested  by  the
         Purchaser in connection  with its  manufacture  and sale
         of LAD Products in accordance with the General  Transfer
         Arrangements.

8.3      The  Parties  shall  enter into the  Safety  Information
         Exchange  Agreement  in the form set out in  Schedule 11
         on or as soon as practicable after the Effective Date.

9.       INTERIM ARRANGEMENTS

9.1      During  the  period  from the  Effective  Date until the
         Transfer  Date,  the Parties  shall  endeavour to enable
         the   Purchaser  to  sell  each  Product  Pack  in  each
         Country,  including AZ appointing  the Purchaser as AZ's
         distributor  in such Country,  if  necessary,  but if it
         shall not be  feasible  or legally  permissible  for the
         Purchaser to sell a Product Pack in a Country,  AZ shall
         continue to sell such  Product  Pack in such Country and
         shall  account to the  Purchaser  for an amount equal to
         Net Sales  less 3% less  Cost of  Goods.  Within 60 days
         after the end of each  month,  AZ shall  deliver  to the
         Purchaser a statement  setting forth the calculation of
         Net Sales in relevant  Countries and the calculation of
         the amount owing to the  Purchaser and shall at the same
         time  pay  to  the  Purchaser  the  amount  due  to  the
         Purchaser  in  respect  thereof.  Payments  by AZ to the
         Purchaser  shall be effected by telegraphic  transfer to
         such  bank  account  as the  Purchaser  may from time to
         time specify and until otherwise specified to:
9.2


                                      197





                 Bank Name:      Union Banques Suisses
                 Bank Address:   1400 Yverdon-Les-Bains
                 Swift:          UBSWCHZH80A
                 Account No:     297-701.047.60A
                 Account Name:   Maillefer  Instruments  Holdings
S.A.

9.3      During  the  period  from the  Effective  Date until the
         Transfer  Date,  AZ shall have no  obligation to promote
         sales  of  AZLAD  Products  in  the  Territory,  without
         prejudice  to  AZ's  obligation   under  clause  9.1  to
         conduct,  but not to  promote,  sales of AZLAD  Products
         from the Effective Date until the Transfer Date.

9.4      For  avoidance  of  doubt,  it is  agreed  that  if,  in
         respect of any Product  Pack in any  Country  during the
         period from the Effective  Date until the Transfer Date,
         AZ shall  manufacture  and  release  for sale  stocks of
         such Product Pack in  accordance  with orders  placed by
         the  Purchaser   under  the   provisions  of  the  AZLAD
         Products  Manufacturing  Agreement,  the  provisions  of
         this  clause 9 shall apply and the  Purchaser  shall not
         purchase  and pay for such stocks under the terms of the
         AZLAD Products Manufacturing Agreement.

9.5      At  the  time  when  the  Purchaser  shall  be  able  to
         commence  selling a Product  Pack in a Country,  subject
         to all relevant regulatory provisions:

         (i)     the Parties shall at the Purchaser's  cost write
                 to all dealers  and major  direct  customers  in
                 such   Country   to  notify   them  of  the  new
                 distribution  arrangements and AZ shall transfer
                 to the Purchaser  and the  Purchaser  shall take
                 over  from  AZ all  unfulfilled  orders  for the
                 sale of such Product Packs in such Country;



                                      198




         (ii)    AZ   shall   sell  to  the   Purchaser   or  its
                 designated  Affiliate  and the Purchaser or such
                 Affiliate  shall purchase the marketable  stocks
                 of such  Product Pack  already  packaged  and/or
                 labelled for sale in the Country,  including the
                 stocks  referred  to  in  clause  9.3  remaining
                 unsold,  at AZ's normal gross invoice prices for
                 sale  to  third   parties,   provided  that  the
                 Purchaser  shall  not  be  obliged  to  purchase
                 stocks  having a  remaining  shelf  life of less
                 than  seven  months  and  shall  be  obliged  to
                 purchase  stocks only to the extent of the level
                 of inventory,  normal and  historic,  reasonable
                 to  satisfy   demand   within  such  shelf  life
                 period; and

         (iii)   the Parties shall  undertake a joint stock count
                 to verify  the  volume of AZLAD  Products  to be
                 sold under paragraph (ii).

9.6      AZ shall  render an  invoice  to the  Purchaser  for the
         price of the stocks sold in  accordance  with clause 9.4
         promptly  after the Parties have  conducted the physical
         count thereof and the  Purchaser  shall pay such invoice
         within 60 days. Where  applicable,  VAT, sales taxes and
         similar taxes shall be added at the  prevailing  rate to
         the price of the  marketable  stocks sold in  accordance
         with clause 9.4.

9.7      For  avoidance  of doubt,  the stocks  sold by AZ to the
         Purchaser in  accordance  with clause  9.4(ii)  shall be
         included in the sales for which AZ shall  account to the
         Purchaser in accordance  with clause 9.1,  provided that
         there shall be no  reduction  of three  percent (3%) for
         such  sales  and  any  such  sales  of  stock  shall  be
         specifically  identified  as to the location  from which
         such stocks are transferred to the Purchaser.

9.8      During  the  period in which AZ shall  continue  to sell
         Product  Packs under  clause 9.1, AZ shall  conduct such
         activities  in  the  ordinary  course  of  business  and
         consistent with past practice.



                                      199




9.9      In the USA,  during the period  from the  Transfer  Date
         until the date when the Contingent  Consideration  shall
         be paid by the  Purchaser  to AZ,  the  Purchaser  shall
         reinstate  a dual  distribution  system of LAD  Products
         whereby it shall sell LAD  Products  both to dealers and
         end  users  in  order  to  maximise  Gross  Sales of LAD
         Products in the USA.

10.      ANCILLIARY ITEMS

10.1     During  the  period in which AZ shall  continue  to sell
         any  Product  Pack in a Country  under  clause  9.1,  AZ
         shall sell Ancilliary  Items on the  Purchaser's  behalf
         in such  Country.  In respect of such sales and the sale
         by AZ to the  Purchaser  of AZ's  marketable  stocks  of
         Ancilliary  Items,  the  provisions  of  clause  9 shall
         apply mutatis mutandis.

10.2     Subject to clause 10.1,  AZ shall have no  obligation to
         sell Ancilliary Items after the Effective Date.

10.3     AZ  shall  provide  the  Purchaser  with  assistance  to
         enable  it to  obtain  further  supplies  of  Ancilliary
         Items   in   accordance   with  the   General   Transfer
         Arrangements.

11.      ORAQIX AGREEMENT

11.1     On the  Agreement  Date the Parties shall enter into the
         Oraqix Agreement.

12.      AZ RESTRICTIONS

12.1     AZ undertakes  to the Purchaser  that it will not during
         the  period  of  ten  years  from  the  Effective   Date
         (otherwise  than on  behalf of or in  co-operation  with
         the  Purchaser or in accordance  with the  provisions of
         this Agreement):



                                      200




         (i)     be engaged or  interested  in the  Territory  in
                 the manufacture or sale of Dental Products, or

         (ii)    grant to any other  person  the right to sell or
                 provide to any other person any  assistance  for
                 the  purpose of selling  Dental  Products in the
                 Territory.

12.2     AZ undertakes  to the Purchaser  that it will not at any
         time  after  the  Agreement  Date   (otherwise  than  as
         aforesaid):

         (i)     use or grant to any  other  person  the right to
                 use the AZ Trade Marks in the  Territory for any
                 purpose   except  in   connection   with   local
                 anaesthetic    products    other   than   Dental
                 Products, or

         (ii)    use or grant to any  other  person  the right to
                 use  the  AZ  Trade  Mark   ASTRACAINE(R)  in  the
                 Territory for any purpose.

12.3     For  avoidance of doubt,  no breach of the  restrictions
         contained  in clause  12.1 shall be  committed  by AZ by
         reason of another  member of any group of  companies  of
         which AZ may  hereafter  become a  member,  not being an
         Affiliate of AZ at the Agreement Date,  being engaged or
         interested  in  the   manufacture   or  sale  of  Dental
         Products, without assistance from AZ.

13.      WARRANTIES AND UNDERTAKINGS

13.1     AZ  warrants  to the  Purchaser  that in  respect of the
         Territory,  except  as  disclosed  in  Schedule  14  and
         subject to the Existing Contracts:

         (i)     it is the owner of and is  entitled  to  license
                 the AZ Trade  Marks as listed  on a  Country  by
                 Country  basis in Schedule 2, Part B and, to the
                 best of its knowledge,  the use of them on or in
                 relation  to AZLAD  Products  in such  Countries
                 will  not  infringe  the  rights  of  any  other
                 person;




                                      201



         (ii)    it is the owner of and is  entitled  to transfer
                 the Technical  Information to the Purchaser free
                 and clear of any liens and claims;

         (iii)   to the best of its  knowledge,  it is the  owner
                 of and is entitled to  transfer  the  Regulatory
                 Know-How   and   the   Marketing   Data  to  the
                 Purchaser  free  and  clear  of  any  liens  and
                 claims;

         (iv)    it  is  the  owner  of  and  has  the  right  to
                 transfer  all  the AZ  Marketing  Authorisations
                 all of which  are in force  and,  to the best of
                 its   knowledge,    the   regulatory    dossiers
                 presented  to  each  authority  for  registering
                 AZLAD  Products  describe  the  action  of AZLAD
                 Products  and set forth  their  quality,  safety
                 and efficacy characteristics;

         (v)     to the  best  of its  knowledge,  the  financial
                 information  listed in  Schedule  15 given by AZ
                 to the  Purchaser  in  writing  with  respect to
                 AZLAD  Products was when given true and accurate
                 in all  material  respects  and no  circumstance
                 has arisen since such  information  was supplied
                 which would  render such  information  untrue or
                 inaccurate in any material respect;

         (vi)    no action or  proceeding,  including  government
                 proceedings,   having,   or  that  may  have,  a
                 material  adverse  effect  on AZ's  business  of
                 manufacturing  and selling AZLAD  Products,  has
                 been commenced or continued  during the past two
                 years,  nor is any  such  action  or  proceeding
                 pending   against  AZ  with   respect  to  AZLAD
                 Products,    the   Regulatory   Know-How,    the
                 Technical Information or the Marketing Data;

         (vii)   with   respect  to  AZLAD   Products  and  their
                 manufacture  and  sale,  there  is  no  material
                 non-compliance  or alleged  non-compliance by AZ
                 with   any   applicable   statute,    order   or
                 regulation  and  no  material   infringement  or
                 alleged  infringement  by AZ of any  proprietary
                 right of any third party;



                                      202




         (viii)  it has no  commitment  to supply AZLAD  Products
                 to  customers  in  the  Territory,   other  than
                 commitments  entered into in the ordinary course
                 of  business,  which is not  terminable  upon no
                 more   than  90  days'   notice  by  it  or  the
                 Purchaser  without  compensation  for  breach of
                 contract;

         (ix)    to the  best  of  its  knowledge,  the AZ  Trade
                 Marks, the Marketing Authorisations,  Regulatory
                 Know-How and Technical  Information comprise all
                 of such items and information  necessary for the
                 operation of the AZLAD  business as conducted by
                 AZ;

         (x)     the  Existing  Contracts,  true  copies of which
                 have  been  made  available  for  review  by the
                 Purchaser,  are  all of the  agreements  entered
                 into by AZ  which  will  impose  limitations  or
                 obligations  of an onerous or  long-term  nature
                 on  the   Purchaser  in   connection   with  its
                 operation of the business of  manufacturing  and
                 selling LAD Products; and

         (xi)    having regard to the AZLAD Products  business of
                 AZ as a whole  and  excluding  general  business
                 trends,  there  has  been  no  material  adverse
                 change in such  business  occurring  since  14th
                 August 2000.

13.2     Each Party hereby warrants to the other that:

         (i)     it is  validly  existing  and in  good  standing
                 under the jurisdiction of its  incorporation and
                 has   all   requisite   power   and   authority,
                 corporate or otherwise, to execute,  deliver and
                 perform this Agreement;

         (ii)    the  execution,  delivery and  performance by it
                 of  this   Agreement   will  not   violate   any
                 provision of any law or regulation  presently in
                 effect  having   applicability   to  it  or  any
                 provision  of its  charter or by-laws or similar
                 organisational  document  or  result in a breach
                 of any obligation or restriction binding it;




                                      203



         (iii)   this  Agreement  is a legal,  valid and  binding
                 obligation  of such party,  enforceable  against
                 it in accordance  with its terms and conditions;
                 and

         (iv)    it is not under any  obligation  to any  person,
                 contractual  or  otherwise,  or under  any court
                 order or decree  which  would be  violated by or
                 prevent the entering into of this  Agreement and
                 the consummation of the  transactions  described
                 herein  or which it knows to be  conflicting  or
                 inconsistent  in any  respect  with the terms of
                 this  Agreement  or which it knows would  impede
                 the  diligent  and  complete  fulfilment  of its
                 obligations hereunder.

13.3     The Purchaser acknowledges:

         (i)     that the  Warranties  given by AZ in this clause
                 are  the  only   representations  or  warranties
                 given  by or on  behalf  of AZ  upon  which  the
                 Purchaser   may  rely  in  entering   into  this
                 Agreement;

         (ii)    that no other  statement or forecast  made by or
                 on  behalf of AZ may form the basis of any claim
                 by  the  Purchaser  in   connection   with  this
                 Agreement; and

         (iii)   that any Warranty  Claim shall be subject to the
                 following provisions of this clause 13.

13.4     The  liability  of AZ  under  the  Warranties  shall  be
         limited as follows:

         (i)     there  shall be  disregarded  for all  purposes,
                 except for the  purpose of  calculating  whether
                 the   aggregate   sum   referred  to  in  clause
                 13.4(ii)  has been  reached,  any  breach of the
                 Warranties  in  respect  of which the  amount of
                 damages to which the Purchaser  would  otherwise
                 be entitled shall be less than  US$100,000.  For
                 the purpose of this  calculation,  all  breaches
                 of a  particular  Warranty  shall be  deemed  to
                 constitute a single breach of such Warranty;



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         (ii)    the  Purchaser  shall not be entitled to recover
                 damages in respect of any breach or  breaches of
                 the  Warranties  unless the amount of damages in
                 respect of such  breach or  breaches  exceeds in
                 aggregate  the  sum  of  US$1,000,000  in  which
                 event,  subject to clause 13.4(i), the Purchaser
                 may  recover  the whole of the  damages  and not
                 simply the excess over US$1,000,000; and

         (iii)   the  maximum   aggregate   liability  of  AZ  in
                 respect of all breaches of the Warranties  shall
                 not exceed the amount of the Consideration.

13.5
         (i)     If the  Purchaser  becomes  aware of any  matter
                 which  is  likely  to give  rise  to a  Warranty
                 Claim,  it  shall  within  30 days  give  notice
                 thereof  in  writing  to AZ,  provided  that the
                 failure  to  give  such  notice  within  30 days
                 shall not  preclude or bar such claims but shall
                 reduce  such  claims to the extent of  prejudice
                 to AZ.

         (ii)    If the Warranty  Claim arises from any liability
                 to a third party the  Purchaser  shall take such
                 action  to avoid,  dispute  or  compromise  such
                 liability  as AZ may  reasonably  request and AZ
                 shall be  entitled  to have the  conduct  of any
                 negotiations and proceedings  relating  thereto,
                 subject  to  AZ   indemnifying   the   Purchaser
                 against  any  liability,   increased  liability,
                 loss or expense  which the  Purchaser  may incur
                 as the result of such action.

         (iii)   Without  prejudice  to the  Purchaser's  duty to
                 mitigate  any loss in  respect  of any breach of
                 the  Warranties,  if in  respect  of any  matter
                 which would  otherwise  give rise to a breach of
                 the  Warranties  the  Purchaser  is  entitled to
                 claim under any policy of insurance,  the amount
                 of  the  Purchaser's  claim  for  breach  of the
                 Warranties  shall be  reduced  by the  amount of
                 insurance  monies to which the  Purchaser  shall
                 be entitled.



                                      205




13.6     AZ  shall  cease  to  have  any   liability   under  the
         Warranties  contained in clauses 13.1(i) and (ii) on the
         tenth  anniversary of the Effective Date and shall cease
         to have any liability under the other  Warranties on the
         third  anniversary  of the  Effective  Date,  except  in
         respect of any Warranty  Claims made by the Purchaser in
         writing prior to such dates.

13.7     Any  payment  made by AZ in  respect  of a breach of the
         Warranties  shall be  deemed  to be a  reduction  of the
         Consideration.

14.      [DELETED]

15.      EMPLOYEES

15.1     On the  Effective  Date  the  Purchaser  shall  offer to
         employ the  Transferring  Employees with effect from the
         relevant  Transfer  Date  or  such  other  date  as  the
         Parties  may agree or the laws of the  relevant  Country
         may  require  ("Employment  Transfer  Date") on terms in
         general  regarding  compensation  and the  provision  of
         health  and  similar  benefits  going  forward  not less
         favourable  to the  Transferring  Employees  than  their
         current terms of employment,  full details of which have
         been supplied by AZ to the Purchaser in writing.

15.2     During  the  period  from  the  Effective  Date  to  the
         Employment  Transfer Date the Purchaser  shall reimburse
         to AZ the employment costs and other direct overheads,
         to  the  extent  not  covered  in  the  Cost  of  Goods,
         attributable  to  the   Transferring   Employees,   full
         details  of  which  have  been  supplied  by AZ  to  the
         Purchaser in writing.

15.3     Subject  to  clause  15.1,   AZ  shall   indemnify   the
         Purchaser   against  any  and  all  claims,   costs  and
         expenses  which are  asserted  against the  Purchaser by
         any non-Transferring Employees of AZ.



                                      206




15.4     Subject to clause 15.1, the Purchaser  shall not without
         AZ's  written   consent  seek  to  induce  any  of  AZ's
         employees  engaged in the  manufacture  or sale of AZLAD
         Products to leave AZ's  employment,  such restriction to
         continue  until 6 months  after the  expiry of the AZLAD
         Products   Manufacturing   Agreement   in  the  case  of
         employees  engaged in the  manufacture of AZLAD Products
         and until 12  months  after  the  Effective  Date in the
         case  of  other  employees.  This  provision  shall  not
         apply to or prohibit general  employment  advertising to
         which any such  employee may  respond,  nor prohibit the
         Purchaser from responding to unsolicited inquiries.

16.      CONFIDENTIALITY

16.1     All   information  of  a  confidential   or  proprietary
         nature,   including   the   Regulatory   Know-How,   the
         Technical  Information and the Marketing Data,  received
         or obtained  by either  Party from the other under or in
         connection  with  this  Agreement  shall be  treated  as
         confidential   ("Confidential   Information")   by  both
         Parties and shall not be  disclosed  by either  Party to
         any third party or used by either Party except:

         (i)     to the extent  necessary  to fulfil the  express
                 purposes of this  Agreement,  or to exercise any
                 rights granted under this Agreement;

         (ii)    in the case of  information  disclosed by AZ, as
                 required for or in connection  with its business
                 relating to medical  products  or its  business
                 outside  the  Territory   relating  to  dental
                 products; or

         (iii)   as  required  by  law,  or  any   regulatory  or
                 governmental authority.

16.2     In  the  event  of  a  Party   disclosing   Confidential
         Information to a third party in accordance  with clauses
         16.1(i) or (ii),  it shall ensure that the  recipient is
         aware of the  confidential  nature  of such  information
         and,  in the case of  information  relating  solely  to
         dental   products,   shall   be   bound  by  the  same
         restrictions  on use and  disclosure as the  disclosing
         Party.



                                      207




16.3     The  following  information  is not subject to the above
         confidentiality obligations or restrictions on use:

         (i)    information  which,  at the time of  acquisition,
         is in the public domain;

         (ii)    information which,  after  acquisition,  becomes
                 part of the  public  domain  by  publication  or
                 otherwise,  except by breach  of  obligation  of
                 the receiving Party;

         (iii)   information   which  the  receiving   Party  can
                 establish   by   competent   proof  was  in  its
                 possession  at the time of  acquisition  and not
                 subject  to any  restriction  on  disclosure  or
                 use;

         (iv)    information   independently   developed  by  the
                 receiving  Party  without  the benefit or use of
                 Confidential Information of the other Party; and

         (v)     information   received   from   third   parties,
                 provided that such  information was not obtained
                 by such third  party,  indirectly  or  directly,
                 from  the  other  Party  under   obligation   of
                 confidence.

16.4     The obligations and restrictions  imposed by this clause
         shall  continue  in force for the  duration  of 10 years
         from the Effective Date.



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17.      INDEMNIFICATION

17.1     The  Purchaser  shall  indemnify  AZ  and  each  of  its
         officers,    employees   and   agents   (each   an   "AZ
         Indemnitee")  against any losses,  damages,  liabilities
         or  expenses in  connection  with any actions or demands
         that may be brought  against  any AZ  Indemnitee  by any
         non-Affiliate   of  the  Parties   arising  out  of  the
         manufacture,  use or sale of any  AZLAD  Product  by the
         Purchaser,  or  by  AZ  in  accordance  with  the  AZLAD
         Products   Manufacturing    Agreement,    the   Existing
         Contracts,  or clause 9.1 of this  Agreement,  including
         any  investigation  by  any  governmental   agency  with
         respect  to the  quality of such  Product,  or any claim
         for death,  personal  injury or property damage asserted
         by  any  user  of  such   Product,   provided  that  the
         Purchaser  shall  not be  obliged  to  indemnify  any AZ
         Indemnitee from any loss,  damage,  liability or expense
         in connection  with any action or demand  arising out of
         any  event or  circumstance  in which AZ is  obliged  to
         indemnify the Purchaser pursuant to clause 17.2.

17.2     AZ  shall  indemnify  the  Purchaser  and  each  of  its
         officers,   employees  and  agents  (each  a  "Purchaser
         Indemnitee")  against any losses,  damages,  liabilities
         or  expenses in  connection  with any actions or demands
         that may be brought against any Purchaser  Indemnitee by
         any  non-Affiliate  of the  Parties to the  extent  such
         event or circumstance  (i) occurred before the Effective
         Date or (ii)  arises  out of the  manufacture  of  AZLAD
         Products  by  AZ  otherwise  than  in  accordance   with
         applicable GMP and the relevant Marketing  Authorisation
         or the sale of AZLAD  Products by AZ otherwise  than in
         accordance with the relevant Marketing Authorisation.



                                      209




17.3     As  promptly  as   practicable   after  any   indemnitee
         referred to in clauses  17.1 or 17.2  obtains  knowledge
         of any  action  or  demand as to which it will or may be
         entitled to indemnity  under such clause,  it shall give
         notice to the  Parties,  provided  that the  failure  to
         give such notice  shall not  preclude or bar such claims
         but shall  reduce such claims to the extent of prejudice
         to the indemnifying  Party. The indemnifying Party shall
         be entitled to participate in any  proceedings  relating
         to such action or demand.  The  indemnitee  shall obtain
         the prior  approval  of the  indemnifying  Party,  which
         approval  shall  not be  unreasonably  withheld,  before
         entering  into  any  settlement  or  compromise  of such
         action   or   demand   if  as  a  result   thereof   the
         indemnifying Party's indemnity  obligations with respect
         to such action or demand will not be discharged.

18.      MISCELLANEOUS

18.1     Neither  Party  shall be liable on any  account  for any
         failure  to fulfil any terms of this  Agreement  if such
         fulfilment   has  been   frustrated  by  Force  Majeure,
         provided   that  the  Party  which  is  prevented   from
         performing  exercises  diligent  efforts  to resume  its
         performance hereunder as soon as practicable.

18.2     Subject to clauses 18.3 and 18.13,

         (i)     neither  Party  shall be  entitled  to assign or
                 sub-license  any of its  rights  or  obligations
                 under   the   AZLAD    Products    Manufacturing
                 Agreement   except   in   accordance   with  the
                 provisions of such Agreement,

         (ii)    the  Purchaser  shall not be  entitled to assign
                 or sub-license  any of its rights or obligations
                 under  the  AZ  Trade  Marks  Licence  Agreement
                 except  in  accordance  with the  provisions  of
                 such Agreement, and

         (iii)   subject to the  provisions of paragraphs (i) and
                 (ii) of  this  clause,  either  Party  shall  be
                 entitled  to  assign or  sub-license  any of its
                 rights  or  obligations   under  this  Agreement
                 without the consent of the other Party.



                                      210




18.3     If either Party shall assign or  sub-license  any of its
         rights or obligations under this Agreement:

         (i)     it  shall  give  notice  of such  assignment  or
                 sub-licence  to the other  Party in writing  not
                 later  than  seven  days  after the date of such
                 assignment or sub-licence,

         (ii)    if so required by the other  Party,  it shall be
                 a condition of such  assignment  or  sub-licence
                 that the  assignee or  sub-licensee  shall enter
                 into a direct  undertaking  with the other Party
                 to   exercise   any   right  and   perform   any
                 obligation    assigned   or    sub-licensed   in
                 accordance  with the  terms  of this  Agreement,
                 including  the  provisions of clause 16 and this
                 clause,

         (iii)   the  original  Party shall  indemnify  the other
                 Party  against  any loss or damage  which it may
                 suffer  as  the  result  of  any  breach  of any
                 assigned or  sub-licensed  obligation  or of the
                 terms  of  this  Agreement  by an  immediate  or
                 subsequent assignee or sub-licensee, and

         (iv)    in the  event  of  the  Purchaser  assigning  or
                 sub-licensing  any of its rights or  obligations
                 under  this  Agreement  in  accordance  with the
                 provisions of clause  18.2(iii),  it shall be an
                 express   condition   of  such   assignment   or
                 sub-licence  that neither the  Purchaser nor the
                 assignee  or  sub-licensee  shall  without  AZ's
                 written  consent publish or permit any person to
                 publish   the   fact   that   such   rights   or
                 obligations  have  been  obtained   directly  or
                 indirectly from AZ.



                                      211




18.4     Notices to be served by either  Party on the other shall
         be in writing  and shall be deemed for the  purposes  of
         this  Agreement to be properly  given if sent by telefax
         with confirmed receipt thereof,  by courier service with
         evidence  of  delivery or by  registered  mail,  postage
         prepaid,  to the other Party at its address as set forth
         below.  Either  Party may change  such  address  for the
         purposes of this  Agreement  by notice in writing to the
         other  Party.  A notice  shall be deemed to be served 24
         hours  after  telefax   transmission  or  4  days  after
         posting by registered mail, whichever is sooner.

                 If to AZ:
                 AstraZeneca AB
                 For attn of President
                 SE-151 85 Sodertalje
                 Sweden
                 Facsimile:  +46 8 553 29010

                 with copy to:
                 AstraZeneca PLC
                 For attn of Company Secretary
                 15 Stanhope Gate
                 London  W1Y 6LN
                 Facsimile:  (020) 7304 5151

                 If to the Purchaser:

                 Maillefer Instruments Holdings S.A.
                 For attn of General Manager
                 Chemin du Verger 3
                 CH-1338 Ballaigues
                 Switzerland
                 Facsimile:  +41 21 843 9293



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                 with copy to:
                 DENTSPLY International Inc
                 570 West College Avenue
                 York PA 17404
                 Attention:  Secretary
                 Facsimile:  (717) 849 4753

18.5     The   Parties   agree  that  this   Agreement   and  the
         transactions  contemplated  hereby  shall be governed by
         and  interpreted in accordance  with the laws of England
         unless  otherwise  stated herein or in any  supplemental
         agreement.

18.6     This Agreement and any supplemental  agreements comprise
         all the terms and  conditions of the  agreement  between
         the  Parties in respect of the  subject  matter  hereof.
         This Agreement may not be amended or modified  except in
         writing duly signed by both Parties.

18.7     In the event of any conflict  between the  provisions of
         this  Agreement  and  any  supplemental  agreement,  the
         provisions  of this  Agreement  shall prevail and in the
         event of any  conflict  between  the  provisions  of the
         clauses  of this  Agreement  and the  provisions  of any
         Schedule, the provisions of the clauses shall prevail.

18.8     If the Parties  shall  execute  any  document in English
         and another language,  or if the Parties shall agree the
         text of any  document  in  English  and the  text of the
         executed   Agreement   shall  be   written   in  another
         language,  the English text shall prevail as between the
         Parties  in the  event of there  being  any  discrepancy
         between the texts and either  Party shall at the request
         of  the  other  Party  join  with  it  in   executing  a
         supplemental  agreement  to amend  the  foreign  text to
         remove such discrepancy.

18.9     If  any  provision  of  this  Agreement  is  held  to be
         invalid   or   unenforceable   by  a   competent   legal
         authority,  the Parties shall meet and mutually agree to
         amend this  Agreement  to  incorporate  new terms  which
         shall,  to the  greatest  extent  possible,  restore the
         economic   balance   contemplated   by  the  Parties  in
         entering into this Agreement.



                                      213




18.10    The  failure by either  Party to exercise or enforce any
         right  conferred  upon it hereunder  shall not be deemed
         to be a  waiver  of such  right  or  operate  to bar the
         exercise or enforcement thereof at any time thereafter.

18.11    Completion of the performance of any obligation  arising
         under this  Agreement  shall not  affect the  continuing
         validity of any provision of this Agreement.

18.12    It is the  intention of the Parties that this  Agreement
         shall be  binding  on their  respective  Affiliates  and
         accordingly  each  of them  undertakes  to  procure  the
         compliance  with the  provisions  of this  Agreement  of
         their  respective  Affiliates as if signatories  hereto.
         To the extent any rights or  obligations  which are part
         of the  transactions  described  herein  are held by any
         Affiliate  of a  Party,  such  Party  shall  obtain  all
         signatures and documents  necessary to fully  consummate
         and evidence the transactions described herein.

18.13    Either  Party  hereto may  transfer any of its rights or
         obligations   hereunder   to  any  of  its   Affiliates,
         provided that each Party (i) guarantees the  performance
         of such Party's  obligations so transferred  pursuant to
         this clause,  (ii) such  transfer  shall not relieve the
         transferring   Party  of  its  obligations   under  this
         Agreement and (iii) prior to such  Affiliate  ceasing to
         be an Affiliate  the  transferring  Party shall  procure
         that all  rights  and  obligations  so  transferred  are
         transferred back to the transferring Party.

18.14    Both Parties hereto agree to execute  promptly and shall
         compel their  respective  Affiliates to execute promptly
         any   separate    agreements    or   other    documents,
         undertakings,  or consents  necessary or  appropriate to
         carry  out  the  provisions  of  this  Agreement.   Such
         agreements,  documents,  undertakings and consents shall
         neither  expand nor contract the rights and  obligations
         of the Parties hereto.



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18.15    Except as otherwise  provided  for herein,  all disputes
         arising in  connection  with this  Agreement,  including
         any  amendments,  shall be  finally  settled  under  the
         Rules   of   Conciliation   and   Arbitration   of   the
         International  Chamber of Commerce by three  arbitrators
         appointed in  accordance  with such Rules.  The arbitral
         proceedings  shall be held in  English  and  shall  take
         place in London.  The arbitral  tribunal  shall  conduct
         and complete its  proceedings and render a final written
         opinion  within  180  days  of the  date  on  which  the
         arbitral  proceedings  are initiated.  The Parties agree
         that any right of appeal  against any arbitral  award or
         order  to  the  Court  is  hereby  waived.  The  Parties
         further  agree that it is their  expressed  intent  that
         until the tribunal  renders its final award,  the status
         quo of the continuing  relationship  is to be maintained
         to the maximum  possible extent and that the arbitrators
         are hereby  directed to enforce  such  agreement  of the
         Parties.  In  addition,   the  Parties  agree  that  any
         injunctive  relief  must  be  sought  in  such  arbitral
         proceeding  and  not  in  any  other  proceedings.   The
         Parties  further agree that any award or order issued by
         the   arbitral   tribunal   shall  be   enforceable   in
         accordance  with  its  terms in any  court of  competent
         jurisdiction.

18.16    Each Party shall be entitled to make such  announcements
         relating  to  this   Agreement   and  any   supplemental
         agreements  as shall  be  appropriate,  but  each  Party
         shall  first  consult in good faith with the other Party
         concerning the contents of such announcements.

18.17    The Parties agree to co-operate to the extent  necessary
         in connection  with the preparation and timely filing of
         notifications to relevant  competition  authorities and,
         in the case of the  USA,  such  filing  shall be made no
         later than 25th January 2001.

IN WITNESS  whereof the Parties have caused this  Agreement to be
executed  the day and year  first  above  written,  in  duplicate
counterparts,  each of which shall  constitute  an  original,  by
their respective duly authorised representatives.



SIGNED for and on behalf of         SIGNED for and on behalf of
ASTRAZENECA AB            MAILLEFER INSTRUMENTS
(publ)               HOLDINGS S.A.


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