摘要
背景:纤维桩修复中树脂核材料的选择可能影响桩核的整体强度。目的:比较5种树脂核材料分别与玻璃纤维桩结合后的整体抗折强度。方法:将50个viva玻璃纤维桩随机分为5组,分别与MEDENTAL双重固化树脂水门汀、伊蒂娜双重固化树脂水门汀、Bisco BisCem树脂水门汀、3M光固化纳米复合树脂P60及PULPDENT双重固化树脂水门汀黏结,将5组桩核的根管部分分别用自凝塑料包埋,固化后固定于万能试验机上并与牙体长轴成135°角加载于核部,加载速度为1.0 mm/min,直至断裂,测得断裂时受力情况。结果与结论:MEDENTAL双重固化树脂水门汀组、伊蒂娜双重固化树脂水门汀组、Bisco BisCem树脂水门汀组、3M光固化纳米复合树脂P60组及PULPDENT双重固化树脂水门汀组的抗折强度分别为(83.248±7.857),(89.230±4.326),(95.188±5.147),(76.646±6.463),(83.064±3.964)N。除MEDENTAL双重固化树脂水门汀组与PULPDENT双重固化树脂水门汀组抗折强度无差异外,其余各组间两两比较差异均有显著性意义(P<0.05)。结果表明Bisco BisCem树脂水门汀与纤维桩结合后具有较高的抗折强度。
BACKGROUND：Selection of resin core materials may affect the overal strength of the fiber posts.
OBJECTIVE：To compare the overal flexural strength of five kinds of resin core materials combined with glass fiber posts.
METHODS：Fifty viva glass fiber posts were randomly divided into five groups respectively binding to five different resin materials for repair：group A, MEDENTAL dual curing resin cement＋glass fiber post;Group B, Tina dual curing resin cement＋glass fiber post;group C, Bisco BisCem＋glass fiber post;group D, 3M nano composite resin curing light P60＋glass fiber post;group E, PULPDENT dual curing resin cement＋glass fiber post. The root canals were embedded with self-curing plastic, and fixed in the universal testing machine. The load in tooth length axis was added onto the core at a 135° angle with a loading speed of 1.0 mm/min, until the fracture. Then, the stress at fracture and the fracture mode were measured.
RESULTS AND CONCLUSION：The flexural strength was （83.248±7.857） N in group, （89.230±4.326） N in group B, （95.188±5.147） N in group C, （76.646±6.463） N in group D, and （83.064±3.964） N in group E. Except groups A and E, there were significant differences between every two groups （P〈0.05）. These findings indicate that Bisco BisCem resin cement binding to the fiber post can obtain a higher flexural strength.
出处
《中国组织工程研究》
CAS
CSCD
2014年第21期3304-3309,共6页
Chinese Journal of Tissue Engineering Research
