1 EXHIBIT 23.1 CONSENT OF ARTHUR ANDERSEN LLP Consent of Independent Public Accountants As independent public accountants, we hereby consent to the incorporation by reference in this Post-Effective Amendment No. 1 to the Registration Statement on Form S-8 of our report dated February 17, 2000 included in OrthAlliance, Inc.'s Form 10-K for the year ended December 31, 1999, and to all references to our Firm included in this registration statement. /s/ Arthur Andersen LLP Arthur Andersen LLP Los Angeles, California June 2, 2000