ADAPTATION OF RESIN COMPOSITE TO ENAMEL SURFACE PREPARED BY DIFFERENT CUTTING TOOLS - SEM STUDY ORIGINAL RESEARCH ARTICLE

Document Type : Original Article

Authors

1 Dental Intern, Faculty of Dentistry, Umm Al-Qura University, Kingdom of Saudi Arabia

2 Consultant, Alexandria Dental Research Center, Semouha, Alexandria, Egypt - Assistant professor, Department of Conservative and Restorative Dentistry, College of Dentistry, Umm Al-Qura University, Mecca, Saudi Arabia

Abstract

Aim: To investigate the effect of four different cutting tools on the adaptation of resin composite to enamel.
Materials and methods: Twenty extracted sound human premolar teeth were used. Occlusal surfaces were ground flat and four random groups were formed according to the received surface treatment as follow, 600-grit silicon-carbide paper (control), carbide-bur, diamond-stone and air abrasion. Two successive layers of self-etch bonding agent were applied followed by composite build-up. Teeth were sectioned longitudinally, the interface between composite and enamel was examined by SEM and micrographs were obtained.
Results: the best adaptation and least surface roughness were seen in the control group while the roughest surface was observed in the air abrasion group with presence of scanty microgaps.

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