Shafiei Fereshteh, Saadat Maryam, Jowkar Zahra
Professor, Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Assistant professor, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
J Clin Exp Dent. 2018 May 1;10(5):e413-e418. doi: 10.4317/jced.54145. eCollection 2018 May.
This study evaluated the effect of three different silanes and post-silanization treatments on the retentive strength of fiber posts luted with an etch-and-rinse resin cement.
One hundred intact maxillary central incisors were randomly divided into 10 groups after endodontic treatment and post space preparation (n=10). The fiber posts were etched using 24% hydrogen peroxide. Posts of the control group did not receive silane. In nine experimental groups, each of the three silanes used, Scotchbond Universal adhesive, Bis-Silane and Porcelain Primer, was subjected to three treatments: air-drying at 25°C, warm air-drying and CO2 laser heat treatment. After cementation of the treated posts using One-Step Plus/Duo-Link cement, the specimens were stored for one weak and then subjected to pull-out bond strength (PBS) testing. The data in Newton (N) were analyzed using two-way ANOVA and Tukey tests (α=0.05).
PBS was significantly affected by silane type and post-silanization treatment (<0.001). The interaction of the two factors was not statistically significant (=0.15). The effect of Porcelain Primer on PBS was significantly higher than those of universal adhesive (<0.001) and Bis-Silane (=0.01), with similar results for the two latter. Warm air-drying and laser treatment significantly increased PBS (<0.001). The lowest and highest PBS was obtained in the control (no silane) group (190.9±31) and laser-treated/ Porcelain Primer group (377.1±50), respectively.
Warm air-drying and CO2 laser heat treatment had a significantly beneficial effect on retentive strength of fiber posts. Porcelain Primer was significantly more effective than universal adhesive and Bis-Silane. Laser heat treatment, Pull-out bond strength, fiber post.
本研究评估了三种不同硅烷及硅烷化后处理对用酸蚀冲洗型树脂水门汀粘结的纤维桩固位强度的影响。
100颗完整的上颌中切牙在根管治疗和预备桩道后随机分为10组（n = 10）。纤维桩用24%过氧化氢酸蚀。对照组的桩未进行硅烷处理。在9个试验组中，使用的三种硅烷（Scotchbond通用粘结剂、双硅烷和瓷用底漆）分别进行三种处理：25℃空气干燥、热风干燥和二氧化碳激光热处理。使用一步法/双固化树脂水门汀粘结处理后的桩后，将标本储存1周，然后进行拔出粘结强度（PBS）测试。以牛顿（N）为单位的数据采用双向方差分析和Tukey检验进行分析（α = 0.05）。
PBS受硅烷类型和硅烷化后处理的显著影响（<0.001）。两个因素的交互作用无统计学意义（=0.15）。瓷用底漆对PBS的影响显著高于通用粘结剂（<0.001）和双硅烷（=0.01），后两者结果相似。热风干燥和激光处理显著提高了PBS（<0.001）。对照组（未用硅烷）的PBS最低（190.9±31），激光处理/瓷用底漆组的PBS最高（377.1±50）。
热风干燥和二氧化碳激光热处理对纤维桩的固位强度有显著的有益影响。瓷用底漆比通用粘结剂和双硅烷显著更有效。激光热处理、拔出粘结强度、纤维桩。
