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

发布时间：2018-01-13 19:16

本文关键词：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　出处：《北京大学学报(医学版)》2015年06期 　论文类型：期刊论文

【摘要】：目的:对比玻璃纤维桩表面经聚多巴胺或硅烷偶联剂处理后与树脂水门汀的微推出粘接强度,探讨玻璃纤维桩表面聚多巴胺化学改性处理对其与树脂水门汀粘接强度的影响。方法:将30支玻璃纤维桩随机分成3组,每组10支,组1为聚多巴胺组,组2为硅烷化组,组3为对照组。将各组纤维桩与树脂水门汀在根管内进行粘接,用精密切片机切出微推出实验试件,测定其微推出粘接强度并观察破坏模式。结果:组1(聚多巴胺组)微推出粘接强度为(7.909±1.987)MPa,组2(硅烷化组)为(5.906±0.620)MPa,组3(对照组)为(4.678±0.910)MPa,聚多巴胺组粘接强度值高于硅烷化组,差异有统计学意义(P0.05)。结论:相较硅烷化处理,应用聚多巴胺处理玻璃纤维桩表面可以更有效地提高其与树脂水门汀在根管内的微推出粘接强度。
[Abstract]:Objective: to compare the bonding strength of glass fiber post treated with polydopamine or silane coupling agent and resin cement. To investigate the effect of chemical modification of polydopamine on the surface of glass fiber post and its bonding strength with resin cement. Methods: 30 glass fiber piles were randomly divided into 3 groups, 10 in each group. Group 1 was polydopamine group. Group 2 was silanized group, group 3 was control group, each group was bonded with resin cement in root canal, and the experimental specimen was cut out by precision slicing machine. Results: the microejection bonding strength of group 1 (polydopamine group) was 7.909 卤1.987 MPA. Group 2 (silanized group) was 5.906 卤0.620 MPA, group 3 (control group) was 4.678 卤0.910 MPA, the adhesive strength of polydopamine group was higher than that of silanized group. Conclusion: compared with silane treatment, polydopamine treatment on the surface of glass fiber post can effectively increase the adhesion strength of the glass fiber post to resin cement in root canal.
【作者单位】：北京大学口腔医学院·口腔医院第二门诊部;北京大学口腔医学院·口腔医院第一门诊部;北京化工大学有机无机复合材料国家重点实验室;北京大学口腔医学院·口腔医院修复科;
【基金】：国家高技术研究发展计划(863计划2011AA030102) 国家新世纪优秀人才基金(NCET-11-0556)资助~~
【分类号】：R783
【正文快照】： △Corresponding auther’s e-mail,xinzwang@sina.com.cn*These authors contributed equally to this work近年来,临床上对于保留相对完整牙本质肩领的牙体组织重度缺损的患牙,需要在其完善根管治疗后进行桩核修复,用以增强外部冠修复体的固位和患牙的抗力[1]。越来越多的学

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