3种预成桩与4种核成型材料的结合力比较  

Comparative study on the binding force among three different prefabricated posts and four different resin core materials

作　　者：刘萍[1] 朱智敏[2] 廖运茂[3] 谭智[1] 

机构地区：[1]川北医学院口腔医学系,四川南充637000 [2]四川大学华西口腔医院修复科 [3]口腔疾病研究国家重点实验室,四川大学,四川成都610041

出　　处：《国际口腔医学杂志》2009年第5期509-511,共3页International Journal of Stomatology

摘　　要：目的比较3种不同材质的预成桩钉与4种核成型材料的结合力。方法预成不锈钢桩、玻璃纤维树脂桩和渗透陶瓷桩分别与ParaCore、Clearfill、Durafill和F2000复合体核材料结合,测试不同桩-核材料间的结合力并对其进行比较。结果3种预成桩中,具有机械固位设计的不锈钢桩组与树脂核的结合力最高;4种成核材料与桩的结合力分别是ParaCore组和Clearfill组高于Durafill组和F2000复合体组,F2000复合体与桩的结合力最低。结论临床选用桩时可考虑利用机械锁结固位,并通过表面粗糙化处理来增加桩-核的结合;采用结合力强、流动性好的树脂材料成核,可获得更好的桩-核结合效果。LIU Pin, ZHU Zhi-min, LIAO Yun-mao, TAN Zhi. （1. Dept. of Objective To compare the binding force among three different prefabricated posts and four different resin core materials. Methods Three types of posts with four types of cores （Parapost with ParaCore, Clearfill, Durafill and F2000, Tenax Fiber White post with ParaCore, Cleadill, Durafill and F2000, CW ceramic post with Clearfill） were made. The adhesive shearing strength between different posts and cores were measured by a universal testing machine. Results The binding force between parapost and cores was the highest in three posts. The binding force between posts and Paracore or Cleadill cores were higher than that between post and Durafill or F2000 cores. In all these four cores, the binding force between posts and F2000 was the lowest. Conclusion To achieve good clinical performance, mechanical lock is very important to retention of post and cores. In addition, core materials have high intension and good liquidity.

关 键 词：预成桩 树脂核 桩核结合力 

分 类 号：R783.1[医药卫生—口腔医学]