Jovanović Goran,
Burić Nikola,
Krunić Nebojša

MAdicAl FAculty, clinic oF StoMAtology, dep. oF oRAl SuRgeRy, SeRBiA, niŠ

The aim of this work is to introduce to the readers the basic characteristics of laser physics and the biologic influence of radiation to expanded tissues. There has been given a brief review of chronologic history of quantum optical generator appearance, as well as basic principles of spontaneous and stimulated emission of radiation which produce the laser rays. There were also mentioned basic parameters which characterize laser rays, construction and classification of laser devices with brief review on working treatment and dosage.

Key word: physics of laser, low power lasers, high power lasersI