Effects of Nd:YAG laser on micro-tensile bond strength of single bond adhesive system for non-carious sclerotic dentin.
- Author:
Hai-yan SUN
1
;
Li-hong QIU
;
Zi-mu LI
Author Information
- Publication Type:Journal Article
- MeSH: Bisphenol A-Glycidyl Methacrylate; Dental Bonding; Dental Cements; Dental Stress Analysis; Dentin; Dentin, Secondary; Dentin-Bonding Agents; Humans; Lasers, Solid-State; Molar; Resin Cements; Tensile Strength
- From: Chinese Journal of Stomatology 2010;45(11):684-686
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the effect of Nd:YAG laser on microtensile bond strength of single bond adhesive system for non-carious sclerotic dentin.
METHODSTen human molars with occlusal wearing were cut into equal halves (nearly 12 mm(2)), 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.
RESULTSThe 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.
CONCLUSIONSNd:YAG laser can increase the microtensile bond strength of single bond adhesive system in non-carious sclerotic dentin.
