Original Articles
Comparative evaluation of shear bond strength of composite resin to enamel surface with laser etching and acid etching | |
Usha Yadav, Ankita Ramani | |
Background: The present study was undertaken for assessing and comparing shear bond strength of composite resin to enamel surface with laser etching and acid etching. Materials & methods: Fifty freshly extracted mandibular first premolars were collected and stored in normal saline. All the specimens were divided broadly into two study groups as follows: Group A: Specimens in which enamel bonding was done after acid etching, and Group B: Specimens in which enamel bonding was done after laser etching. All the specimens were then placed in universal force testing machine for checking the shear bond strength. Results: Among specimens of group A and group B, mean shear bond strength was found to be 29.11 MPa and 14.92 MPa respectively. While analysing statistically, it was seen that mean shear bond strength specimens of the acid etching group was significantly higher in comparison to the patients of the laser etching group. Conclusion: Mean shear bond strength of composite bonded after acid etching was significantly higher in comparison to composite bonded after laser etching. Key words: Bond strength, Enamel Surface, Etching |
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