International Journal of Dental Sciences

Authors
Swati R, K Korath Abraham, Ektah Khosla, Arun Roy James, Elza Thenumkal

Abstract
Introduction: Composite restorations are placed following pretreatment of cavities with an adhesive system. The degree of interface adhesion and chemical stability is critical for clinical success of restoration. Aim and Objectives: The objectives of this in vitro study were to compare and evaluate the fracture mode of 7th generation adhesive and universal adhesive on dentin of deciduous teeth following micro tensile bond strength test under scanning electron microscope. Methodology: Flat buccal surface of 10 teeth each were divided into 2 groups and treated with GC-G BOND (7th Generation Adhesive) (Group 1); GC-G-PREMIO BOND (Universal adhesive) (Group 2) to develop a composite resin cone. The tensile bond strength was measured using Instron Universal testing machine. Fracture mode was evaluated from each group under SEM. Results: The greatest mean adhesive fracture was exhibited by 7th Generation adhesive while Universal adhesives exhibited majority of resin cohesive fractures. Conclusion: Fracture mode of a material is dependent on the adhesive system, substrate depth and adhesive depth interaction. Hence composition of the adhesive and substrate treatment should be considered for good adhesion.