华西口腔医学杂志2012，Vol.30Issue(5)：509-513,5.DOI:10.3969/j.issn.1000-1182.2012.05.014
Nd:YAG激光对3种树脂水门汀与牙本质粘接强度的影响
Effect of Nd:YAG laser on the bond strength of 3 resin cements to dentin
刘琨 1张惠民 1申丽丽 1姚丽霞 1邓婧2
作者信息
- 1. 聊城市人民医院口腔科,聊城252000
- 2. 青岛大学医学院附属医院口腔内科,青岛266003
- 折叠
摘要
Abstract
Objective To observe the microscopic characteristic of the bonding interface between resin cement and dentin before and after using Nd: YAG laser, and evaluate the effects of the Nd: YAG laser on the shear bond strength of 3 resin cements to dentin. Methods 30 human premolars were cut into nearly equal halves, prepared to expose the dentin and randomly divided into two groups: Laser group and control group. The teeth in the laser group were processed with pulse Nd: YAG laser (0.8 W, 10 Hz) for 25 s, and then the teeth were bonded using 3 resin ce-ments (RelyX ARC, Panavia F and RelyX Unicem) to dentin. All teeth in the control group were directly filled with 3 cements. The shear bond strength of specimens was measured. Each fractured specimen was examined under dental microscope. And 6 new human premolars were prepared into standard bonding specimens. After 3 teeth processed with pulse Nd: YAG laser, all teeth were bonded using 3 resin cements. To observe the microscopic characteristics of the bonding interface between resin cements and dentin. Results Nd: YAG laser on dentin surface could increase bond strength of Panavia F and RelyX Unicem (P<0.05). And the laser could decrease bond strength of RelyX ARC (P<0.05). Most of the fractured adhesive dentin surfaces were adhesive failure modes. Scanning electron microscope (SEM) observation demonstrated that Nd: YAG laser irradiation on dentin surface could decrease the hybrid layer and resin tags between the resin cements (RelyX ARC and Panavia F) and dentin. The interface between RelyX Unicem and dentin showed no obvious change, and resin tags were not observed. Conclusion Nd: YAG laser on dentin surface can increase bond strength of Panavia F and RelyX Unicem. Therefore, they can be used together in clinic.关键词
Nd:YAG激光/树脂水门汀/剪切强度/扫描电镜Key words
Nd: YAG laser/resin cement/shear bond strength/scanning electron microscope分类
医药卫生引用本文复制引用
刘琨,张惠民,申丽丽,姚丽霞,邓婧..Nd:YAG激光对3种树脂水门汀与牙本质粘接强度的影响[J].华西口腔医学杂志,2012,30(5):509-513,5.
