Durability of the bond between resin composite cores and prefabricated posts
Durability of the bond between resin composite cores and prefabricated posts
复制标题
树脂复合材料芯材和预制柱之间粘合的耐久性
DOI：
10.1080/00016350902938571
复制
发表时间：
2009
影响因子：
2
通讯作者：
A. Peutzfeldt
中科院分区：
文献类型：
--
作者：
A. Sahafi;A. Peutzfeldt
目标.本研究评价了桩表面处理和储存条件对树脂复合材料核（Clearfil Core）与钛合金（Fysika）、硅锆纤维增强环氧树脂（SiliciumPost）和氧化锆（CosmoPost）桩之间粘结的影响。材料和方法。在实验组中，每个桩冠部分进行喷砂或摩擦化学硅酸盐涂层（CoJet）处理。每个桩的冠部在固定装置的帮助下嵌入树脂复合核材料的圆柱体中。15分钟后，将样品从模具中取出并储存在去离子水中。当在以下条件下从树脂复合材料芯中取出桩时，在通用试验机中测定桩的轴向拉伸强度（ATS）：1）在37 °C下储存14天，2）在37°C下储存14天，然后进行热循环（在5°C和55°C之间进行6，000次循环），或3）在37°C下储存1年水。结果采用三因素方差分析和Newman-Keuls'多重范围检验进行统计学分析。结果Fysika立柱和SiliciumPost立柱的ATS值通常高于CosmoPost立柱。表面处理有效地改善了Fysika桩和SiliciumPost桩的ATS值，但对CosmoPost桩没有改善。热循环或长期蓄水对柱子的ATS值影响很小。结论复合树脂核与桩的粘结主要取决于桩的材料和桩的表面处理，而不是储存条件。
Objectives. This study evaluated the effect of post surface treatment and of storage condition on the bond between resin composite cores (Clearfil Core) and posts of titanium alloy (Fysika), silica-zircon fiber reinforced epoxy resin (SiliciumPost), and zirconia (CosmoPost). Material and Methods. In the experimental groups, the coronal part of each post received sandblasting or tribochemical silicate-coating (CoJet) treatment. The coronal part of each post was embedded in a cylinder of resin composite core material with the aid of a fixation apparatus. After 15 min, the specimen was freed from the mold and stored in de-ionized water. The axial tensile strength (ATS) of posts was determined in a Universal Testing Machine when extracting the posts from the resin composite cores after: 1) 14 d water storage at 37°C, 2) 14 d water storage at 37°C followed by thermal cycling (6,000 cycles between 5°C and 55°C), or 3) 1 year water storage at 37°C. The results were statistically analyzed by three-way factorial ANOVA and Newman-Keuls’ multiple range test. Results. The ATS values were generally higher for Fysika posts and SiliciumPost posts than for CosmoPost posts. Surface treatment effectively improved the ATS values of Fysika posts and SiliciumPost posts, but not those of CosmoPost posts. Thermal cycling or long-term water storage had only minimal effect on the ATS values of the posts. Conclusion. Bonding of resin composite cores to the posts depended more on the material of the post and the surface treatment of posts than on the storage condition.