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Proceedings Paper

Shear bond strength of a self-etch adhesive to Er:YAG laser-prepared dentin
Author(s): Zhenlin Zhan; Weiliang Wu; Xianzeng Zhang; Haibin Zhao; Shi Lin; Shusen Xie
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Paper 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.

Paper Details

Date Published: 8 November 2010
PDF: 6 pages
Proc. SPIE 7845, Optics in Health Care and Biomedical Optics IV, 78452H (8 November 2010); doi: 10.1117/12.870302
Show Author Affiliations
Zhenlin Zhan, Fujian Normal Univ. (China)
Weiliang Wu, Fujian Medical Univ. (China)
Xianzeng Zhang, Fujian Normal Univ. (China)
Haibin Zhao, Fujian Normal Univ. (China)
Shi Lin, Fujian Medical Univ. (China)
Shusen Xie, Fujian Normal Univ. (China)

Published in SPIE Proceedings Vol. 7845:
Optics in Health Care and Biomedical Optics IV
Qingming Luo; Ying Gu; Xingde Li, Editor(s)

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