Abstract
The use of lasers is getting popular year by year among Japanese dental practitioner. Oral soft tissue and cavity preparation uses are becoming more common in dental offices. This article summarizes the new trend of laser application in endodontics, especially, measurement of pulpal blood flow by laser Doppler flowmetry, application of lasers to direct pulp capping, pulpotomy, pulpectomy, disinfection of root canal, root canal shaping, and apicoectomy. Additionally, we discuss the problem with the laser irradiation in the root canal.