EXHIBIT 23 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No.'s 33-51234, 33-73300 and 333-09093) and Form S-3 (No. 333-31023) of BioLase Technology, Inc. of our report dated March 16, 1999 relating to the consolidated financial statements and consolidated financial statement schedule, which appears in this Form 10-K. /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP Costa Mesa, California August 8, 1999