Effects of Water Sorption and Solubility on Degradation of Silorane and Methacrylate-Based Dental Composites.

Introduction: Wet oral environment may have deleterious effects on performance of the composites due to influences of water sorption and solubility. The study evaluated the hydrolytic degradation caused because of water sorption and solubility of silorane and methacrylate-based dental composites.

Methods: Ten disc samples (2 mm × 10 mm) were prepared.

Evaluation of DNA damage in tobacco associated human buccal cells using comet assay.

Aim And Objective: To assess the DNA damage in tobacco associated human buccal cells using comet assay.

Methods: The study included 75 study subjects, which were divided into 3 groups on the basis of tobacco usage. Group I - 25 individuals with no history of tobacco usage, Group II - 25 individuals with tobacco usage but without oral lesions and Group III - 25 individuals with tobacco associated oral lesions.