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IJCRR. 2013; 5(3): 62-68


A COMPARATIVE SHEAR BOND STRENGTH EVALUATION OF THREE TOOTH COLORED RESTORATIVE MATERIALS USED IN PRIMARY TEETH AN IN VITRO STUDY

K. Vimala Geetha, Eapen Thomas, Phani Babu.

Abstract
The goal of research and development is to develop an ideal restorative material. The ideal restorative material would be identical to natural tooth structure, in strength adherence and appearance. Hence the aim of the study was to evaluate the shear bond strength (SBS) of three recently evolved tooth colored restorative materials used in primary teeth dentine and verify, after SBS testing, the failure mode of the adhesive interface. Sixty extracted deciduous human molars with one of the proximal and occlusal surfaces free of caries were selected and randomly assigned into three groups according to the restorative material used. Teeth were sectioned parallel to occlusal surface to expose the mid coronal dentin of the non carious surface and the restorative materials were packed into a plastic straw (3 mm x 2 mm) covering the centre of flattened occlusal surface. SBS tests were performed and the obtained values were statistically analyzed using ANOVA and Turkey tests (p

Key words: Deciduous teeth, shear bond strength, Vitremer, Ketac N 100, Ormocer



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