Shear bond strength of a self-etch adhesive to Er:YAG laser-prepared dentin

Zhenlin Zhan; Weiliang Wu; Xianzeng Zhang; Haibin Zhao; Shi Lin; Shusen Xie

doi:10.1117/12.870302

8 November 2010 Shear bond strength of a self-etch adhesive to Er:YAG laser-prepared dentin

Zhenlin Zhan, Weiliang Wu, Xianzeng Zhang, Haibin Zhao, Shi Lin, Shusen Xie

Proceedings Volume 7845, Optics in Health Care and Biomedical Optics IV; 78452H (2010) https://doi.org/10.1117/12.870302
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

The purpose of this study was to determine the shear bond strength of a self-etch adhesive to Er:YAG laser-prepared dentin and evaluate the resin-dentin interface. Extracted sound human molars were sectioned and wet-ground to expose flat dentin surfaces. These surfaces were subsequently irradiated by an Er:YAG laser with a wavelength of 2.94 μm and pulse repetition rate of 20 Hz. Energy density was set at 20 J/cm² and spot size was 2 mm. The conventional bur was used as a control group. After surface treatments, a self-etch adhesive was bonded to the irradiated dentin surface and then a resin composite was applied to the dentin surface. Specimens were subjected to shear bond strength test after 24 h of storage in water. The bonding interface was examined by laser confocal scanning microscope (LCSM) after specimens were serially sectioned into multiple slices. The results revealed that Er:YAG laser irradiation did not present advantages compared to the conventional bur.

Citation Download Citation

Zhenlin Zhan, Weiliang Wu, Xianzeng Zhang, Haibin Zhao, Shi Lin, and Shusen Xie "Shear bond strength of a self-etch adhesive to Er:YAG laser-prepared dentin", Proc. SPIE 7845, Optics in Health Care and Biomedical Optics IV, 78452H (8 November 2010); https://doi.org/10.1117/12.870302

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