Comparative research for micro-push-out bond strengths of glass fiber posts treated by poly-dopamine or silane coupling agent
10.3969/j.issn.1671-167X.2015.06.021
- VernacularTitle:玻璃纤维桩表面经聚多巴胺或硅烷化处理后的微推出粘接强度对比研究
- Author:
Qian CHEN
;
Yongliang SU
;
Qing CAI
;
Yunyang BAI
;
Jing SU
;
Xinzhi WANG
- Publication Type:Journal Article
- Keywords:
Glass fiber posts;
Poly-dopamine;
Silane;
Push-out bond strength
- From:
Journal of Peking University(Health Sciences)
2015;47(6):1005-1009
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the micro-push-out bond strengths of prefabricated glass fiber posts with poly-dopamine functionalized to root dentin using resin cements, contrasted with silane treatment. Methods:In the study, 30 glass fiber posts were randomly divided into 3 groups ( 10 posts in each group) for different surface treatments. Group 1, treated with poly-dopa; Group 2, treated with silane coupling agent for 60s;Group 3, no surface treatment (Control group). The 30 extracted human, single-rooted teeth were endodontically treated and a 9 mm post space was prepared in each tooth with post drills provided by the manufacturer. Following post cementation, the specimens were stored in distilled water at 37 ℃ for 7 days. The micro-push-out bond strengths were tested using a universal testing machine (0. 5 mm/min), and the failure modes were examined with a stereomicroscope. The data of the three groups were statistically analyzed using the one-way ANOVA test(α= 0. 05). Results:The bond strengths were (7. 909 ± 1. 987) MPa for Group 1, (5. 906 ± 0. 620) MPa for Group 2, and 4. 678 ± 0. 910 MPa for Group 3 . The bond strength of poly-dopamine group was significantly higher than that of the silane group (P<0. 05). Conclusion: Contrasted with silane treatment, surface poly-dopamine functionaliza-tion was confirmed to be a more reliable method for improving the bond strength of resin luting agents to fiber posts.
