Introduction: The principle of safe bracket debonding is to degrade the adhesive
resin strength connecting the tooth and the bracket by softening or ablation.of adhesive
resin from tooth surface without damaging the enamel. Aim: The aim of this study
were to compare the efficacy of erbium yttrium aluminum garnet (Er: YAG) laser and
Er Cr;YSGG in debonding on the metal brackets and determination if there are any
adhesive remnants on the enamel surface by the stereomicroscope. Methods: Sixty
metal brackets were bonded to sixty upper first premolars and they were divided into
three groups, Group 1(control) debonded by conventional plier, group 2 debonded by
Er: YAG laser and group 3 de bonded by Er Cr: YSGG. The Enamel surface were evaluated
by stereo microscope for any enamel cracks and damage. Results: Er: YAG 7W
laser debond the metal brackets in a shorter time than Er Cr; YSGG and Erbium Chromium
Yttrium Scandium Gallium Garnet (Er Cr: YSGG) laser (6W and 7W) decreased
the enamel damage compared to the Er :YAG laser and the conventional method for
Debonding .Conclusion: The Er Cr; YSGG 7 W laser are clinically safer than other
groups as it has acceptable chair side time in debonding and less damage on the enamel.