Effects of Nd: YAG laser on micro-tensile bond strength of single bond adhesive system for noncarious sclerotic dentin

VernacularTitle:Nd:YAG激光增加非龋性硬化牙本质全酸蚀粘接强度的实验研究
Author: Hai-Yan SUN ¹ ; Li-Hong QIU ; Zi-Mu LI
Author Information

1. 中国医科大学
Keywords: Lasers; Dentin; Dental bonding
From: Chinese Journal of Stomatology 2010;45(11):684-686
CountryChina
Language:Chinese
Abstract: Objective To investigate the effect of Nd: YAG laser on microtensile bond strength of single bond adhesive system for non-carious sclerotic dentin. Methods Ten human molars with occlusal wearing were cut into equal halves ( nearly 12 mm2 ), and randomly divided into experimental group and control group. The teeth in experimental group were processed with Nd: YAG laser( 1 W,10 Hz) ,and then applied with Scotchbond and filled with Z350 resin. In control group, the teeth were processed with single bond and filled with Z350 resin. The specimens were sectioned, and the microtensile bond strengths of each sample was tested by a universal testing machine. Results The bond strength of the experimental group [ (26. 11 ±1.62) MPa] was significantly higher than that of the control group[ (22. 27 ±2. 16) MPa],P＜0. 05. Stero-microscope examination indicated that most of the fractures occurred in dentin-resin interface. Conclusions Nd: YAG laser can increase the rnicrotensile bond strength of single bond adhesive system in non-carious sclerotic dentin.