华西口腔医学杂志2011，Vol.29Issue(2)：210-213,4.DOI:10.3969/j.issn.1000-1182.2011.02.028
不同根管清洗方法对纤维桩粘接强度的影响
Effect of different irrigating solutions on bonding strength of fiber post to root canal
刘畅 1刘红 2朱松1
作者信息
- 1. 吉林大学口腔医院,修复科,长春130021
- 2. 吉林大学口腔医院,综合治疗科,长春130021
- 折叠
摘要
Abstract
Objective The purpose of this study is to find some appropriate treatments on the dentin of root canal wall to obtain better bonding strength of fiber posts Methods 36 new extracted non-caries single root canal anterior teeth were collected and post spaces were prepared. The teeth were divided into six groups randomly and processed by different post-space treatments: Sodium chloride irrigation(group Ⅰ, control group); irrigation with 2％ chlorhexidine solution followed by 17％ EDTA solution(group Ⅱ ); irrigation with 3％ hydrogen peroxide followed by 17％ EDTA solution(group Ⅲ); irrigation with 5.25％ sodium hypochlorite(NaCIO) followed by 17％ EDTA solution(group Ⅳ); etching with 35％ phosphoric acid-gel for 30s(group Ⅴ); 17％ EDTA-gal for 1 min(group Ⅵ). After each post-space treatment, sodium chloride irrigation was applied in Ⅱ ～Ⅵ group. Fiber posts were then luted in the treated roots using 3M ESPE RelyXTM Unicem and the thin-slice push-out test was performed. The dentin surfaces and bonding interface were examined under scanning electron microscope. Fracture mode of fiber posts were observed by stereo microscope. Results Group Ⅱ ～Ⅵ were effective in getting rid of smear layer. Resin rags of dentin bonding interface were observed in group Ⅱ and group Ⅴ. The majority fracture mode of specimens in each group were mixed mode which contained dentin destruction. Compared with control group, the bonding strength of group Ⅱ, Ⅴ increased obviously(P＜0.05). Conclusion Irrigation with 2％ chlorbexidine solution followed by 17％ EDTA solution and 35％ phosphoric acid-gel etching improved the bonding strength of fiber posts. The depth of post space has no influence of bond strength.关键词
纤维桩/粘接强度/表面处理Key words
fiber post/ bonding strength/ surface treatment分类
医药卫生引用本文复制引用
刘畅,刘红,朱松..不同根管清洗方法对纤维桩粘接强度的影响[J].华西口腔医学杂志,2011,29(2):210-213,4.
