Fracture strength of composite veneers using different restorative materials: A comparative in vitro study

Abstract

Aim: To evaluate the Fracture Strength of composite veneers using different restorative materials. Methodology: Twenty sound human maxillary central incisors were used in this in vitro study. Teeth were randomly divided into two experimental groups of ten teeth each. Group A-Restored with Nano Hybrid (Ceram Spheretec), Group B-Restored with Microhybrid (Tetric n ceram) Standard preparations were done using ceramic veneer set and all specimens were stored in distilled water at 37 degree C for 2 weeks. After that the specimens were mounted in an acrylic block. The load was applied on the incisal part of the veneer to the long axis of the tooth using Universal Testing Machine. Results were analyzed with One Way Anova & LSD Tests. Results: Group A showed higher mean of fracture strength with stastically significant difference in comparison to group B. Conclusion: All Veneers used in this study can be considered as acceptable for treatment in the anterior region. Direct Composite veneer is the most favourable technique in terms of fracture strength.