Exhibit 99.1

                           CERTIFICATIONS PURSUANT TO
                               SECTION 906 OF THE
                           SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Patterson Dental Company (the
"Company") on Form 10-Q for the quarterly period ended October 26, 2002, as
filed with the Securities and Exchange Commission on the date hereof (the
"Report"), the undersigned, in the capacity indicated below, hereby certifies
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that: (1) The Report
fully complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934; and (2) The information contained in the Report fairly
presents, in all material respects, the financial condition and results of
operations of the Company.

Date: December 9, 2002                   /s/ Peter L. Frechette
                                         ----------------------
                                         Peter L. Frechette
                                         President and
                                           Chief Executive Officer


                                         /s/ R. Stephen Armstrong
                                         ------------------------
                                         R. Stephen Armstrong
                                         Executive Vice President and
                                            Chief Financial Officer