STUDYING THE EFFECT OF LASER ON MICROLEAKAGE OF LIGHT CURE FILLING FOR ANTERIOR TEETH.

To assess of the microleakage of anterior fillings after the application of laser dental treatment, eight samples of each group were taken .The first group samples are taken to examine the filling with the acid and bonding are used; while the second group samples, the laser and bonding are used; then the third group samples were taken where the laser, acid and bonding were in use.The adhesion resulted for the first group samples was not good because the depth of leakage was high which indicated dye penetration approximating the tooth cavity floor portion.It was noted that the adhesion quality of fillings measured of second group samples was good because the depth of leakage was medium in touching the enamel layer.Adhesion checked for the third group samples shows fillings of high strength since no leakage, penetration of dye.