Scanning electron microscopic study of argon laser-induced morphologic changes on human dental enamel and dentin

Thirty two human posterior teeth were used in this study to investigate the effect of pulsed Argon laser of different densities [40, 50 and 60 J/ cm[2]] on the surface topography of human enamel and dentin. The S.E.M. results showed apparent alterations on the surface topography of both tissues. Increasing the energy density from 40 to 60 J/Cm [2] showed worse, and destructive changes. Moreover, the effect of Argon laser on dentin was more pronounced when compared with that of enamel irrespective of the energy dentisty used