EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Registration Statement on Amendment No. 3 to Form S-3 (File No. 333-58329) of our report dated March 16, 1999 relating to the consolidated financial statements and consolidated financial statement schedule, which appears in BioLase Technology Inc.'s Annual Report on Form 10-K and 10-K/A for the year ended December 31, 1998. We also consent to the reference to us under the heading "Experts" in such Registration Statement. /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP Costa Mesa, California August 30, 1999