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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44549

Assessment of shear bond strength between composite resin and enamel surface after treating with acid etching and laser etching: A comparative study

1Dr. O.Pavan Kumar, 2Dr.Sharanesh Babu Daneti, 3Dr. Shweta Vijaykumar Sagare, 4Dr. Sonali Sapra, 5Dr. Deepika, 6Dr. Ujjwal Chandra Jha

Abstract

Background: To compare the shear bond strength of composite resin to enamel surface with laser etching and acid etching. Materials and methods: 40 recently extracted maxillary canines have been used to conduct this study. These were primarily sectioned into two groups:Group A: samples which underwent acid etching followed by enamel bonding, and Group B: samples which underwent laser etching followed by enamel bonding.Thereafter, all samples were bonded with composite resin. Shear bond strength was assessed. Results: Group A was found to have mean shear bond strength of 33.2 MPa whereas group B was found to have mean shear bond strength of 18.3 MPa. After statistical analysis, it was observed that the samples of acid etching group had significantly greater mean shear bond strength when compared with the laser etching group. Conclusion: The mean shear bond strength of composite was higher after acid etching as compared to composite bonded after laser etching.

Keywords

Composite resin, acid etching, laser etching

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