冷热循环对3种复合树脂材料与纤维桩微拉伸强度的影响  

Influence of thermocycling on the microtensile bond strength of three composite resin used as core ma-terials around fiber posts

作　　者：潘小波[1] 曾鹏[2] 彭利辉[1] 任悦[2] 钟爱喜[1] 洪黎[2] 马隆佰[1] 杨征[2] 

机构地区：[1]广西壮族自治区人民医院口腔科,广西南宁530021 [2]四川大学华西口腔医院修复科,四川成都610041

出　　处：《国际口腔医学杂志》2010年第3期268-271,共4页International Journal of Stomatology

基　　金：广西科学研究与技术开发基金资助项目(0719006-2-20)

摘　　要：目的探讨冷热循环对3种复合树脂材料用于成核时与纤维桩的微拉伸结合强度有无影响。方法根据树脂材料的种类将TENAX纤维桩随机分为3组,分别为专用成核树脂材料ParaCore组、AP-X组和Beautifil Flow组,并制成桩核样本,将制备好的样本切割成截面为1mm×1mm的条状试件。再将每组制备好的试件随机分为正常对照组和冷热循环组并对其进行微拉伸强度的测试。结果冷热循环组复合树脂与纤维桩之间的微拉伸结合强度虽有下降但与正常对照组没有统计学差异(P>0.05)。ParaCore组在正常对照组和冷热循环组的微拉伸结合强度高于AP-X组(P<0.05)。结论 1)本实验条件下,冷热循环对于复合树脂与纤维桩之间的粘接强度无明显影响。2)ParaCore树脂材料与玻璃纤维桩的粘接性能优于其余2种复合树脂材料。Objective To evaluate the microtensile bond strength of three kinds of composite resins used as core materials around fiber posts with and without themocycling.Methods TENAX fiber posts were randomly divided into three groups,according to the resin composite used.They included one core materials specifically developed for core build-up ParaCore,one hybrid composite—AP-X,one flowable composite—Beautifil Flow.The fiber posts were then luted with a corresponding composite resin to be made into core-built up specimen.1 mm ×1 mm sticks were got from the specimen for microtensile testing with and without thermocycling.Results ParaCore,AP-X and Beautifil Flow with fiber posts decreased after thermocycling but there was no significant difference compared with which without thermocycling（P〉0.05）.ParaCore with fiber posts was significantly higher than that of AP-X with and without thermocycling（P〈0.05）.Conclusion 1）Within the limits of this study,thermocycling has no evident influence on three different resin composites.2）The bond performance of ParaCore is superior to the other two resin composites.

关 键 词：纤维桩 微拉伸强度 复合树脂 冷热循环 

分 类 号：R783.1[医药卫生—口腔医学]