Clinical Study of Laser Analgesia in Cavity Preparations Using the Er,Cr:YSGG Laser

Patients with towo similar size lesions of either Class I or class v cavities selected as subjects. in the same appointment, both cavities are prepared by the Er'Cr:YSGG. one lesion was prepared with high power laser setting first to ablate the enamel, dentin, and caries. the other lesion was prepared with low power setting to start and is aimed at applying low level laser therapy (LLLT) first before using high power.