This thoroughly revised,up to date text covers a review on lasers in dentistry in general.It is of great help to beginners as well as post graduates of various faculties in dentistry.It gives the students a basic idea regarding laser physics,its uses,its advantages as well as disadvantages in general.Laser has found widespread application now-a-days in communication,defence,industries and medicine as well as dentistry.An essential condition for the proper and successful use of lasers in any specialty is an understanding of the characteristics and limitations of wavelengths, interaction with tissues, mode of transmission, delivery systems and settings.Chapters have been organised in and consolidated in 11 parts including various figures,tables so as to maintain continuity in reading.This book will keep one updated on basic knowledge on lasers.