Aksornmuang Juthatip, Chuenarrom Chanya, Chittithaworn Natjira
Department of Prosthetic Dentistry, Faculty of Dentistry, Prince of Songkla University.
Dent Mater J. 2017 Sep 26;36(5):614-621. doi: 10.4012/dmj.2016-290. Epub 2017 May 30.
The purpose of this study was to evaluate the flexural properties and surface topography of fiber posts surface-treated with various etching protocols. Seventy each of three types of fiber posts: RelyX Fiber Post, Tenax Fiber Trans, and D.T. Light-Post Illusion X-Ro, were randomly divided into 7 groups: no surface treatment, surface treated with hydrofluoric acid (HF) 4.5% for 60 s, HF 4.5% for 120 s, HF 9.6% for 15 s, HF 9.6% for 60 s, HF 9.6% for 120 s, and treated with HO 24% for 10 min. The specimens were then subjected to a three-point bending test. Surface topographies of the posts were observed using a SEM. The results indicate that fiber post surface pretreatments had no adverse effects on the flexural properties. However, the fiber posts treated with high HF concentrations or long etching times seemed to have more surface irregularities.
本研究的目的是评估经不同蚀刻方案表面处理的纤维桩的弯曲性能和表面形貌。三种类型的纤维桩各70根：RelyX纤维桩、Tenax纤维传输桩和D.T. Light-Post Illusion X-Ro，随机分为7组：未进行表面处理、用4.5%氢氟酸（HF）处理60秒、4.5%HF处理120秒、9.6%HF处理15秒、9.6%HF处理60秒、9.6%HF处理120秒，以及用24%过氧化氢处理10分钟。然后对试样进行三点弯曲试验。使用扫描电子显微镜观察桩的表面形貌。结果表明，纤维桩表面预处理对弯曲性能没有不利影响。然而，用高浓度HF或长时间蚀刻处理的纤维桩似乎有更多的表面不规则性。
