J Prosthodont:粘接和再粘接对两段式种植修复体剪切强度的影响

2019-02-13 MedSci MedSci原创

本研究旨在评价烧结后的陶瓷与钛合金的再粘结强度。使用计算机辅助设计和计算机辅助制造(CAD/CAM)技术制造总共40个钛合金(钛-6铝-4钒)圆盘(4.0×6.6mm)和20个氧化锆(Lava Plus)圆盘。制造二十个热压二硅酸锂玻璃-陶瓷(IPS e.max Press LT)圆盘用作对照。根据制造商的说明书进行每个样品表面的粘合方案。使用粘合剂树脂(RelyX Ultimate)粘合氧化锆/

本研究旨在评价烧结后的陶瓷与钛合金的再粘结强度。

使用计算机辅助设计和计算机辅助制造(CAD/CAM)技术制造总共40个钛合金(钛-6铝-4钒)圆盘(4.0×6.6mm)和20个氧化锆(Lava Plus)圆盘。制造二十个热压二硅酸锂玻璃-陶瓷(IPS e.max Press LT)圆盘用作对照。根据制造商的说明书进行每个样品表面的粘合方案。使用粘合剂树脂(RelyX Ultimate)粘合氧化锆/钛合金(ZR)和二硅酸锂/钛合金(LD)的样品(n = 10),然后进行热处理(HT,320℃,2分钟)拆解粘接复合物,用氧化铝气载颗粒磨损清洗,并按照初始方案,ZRHT组和LDHT组再粘合。在5000次循环的热循环后,进行剪切粘合试验。万能试验机以5mm/min的十字头速度使用。用10倍放大率的立体显微镜检查失败的样本以确定失败模式。应用单向ANOVA和Tukey HSD测试对剪切粘合强度数据进行统计分析,在α= 0.05时具有统计学显著性。

结果显示,平均值±SD粘合强度值范围为28.3±7.2至45.9±9.7MPa。从LD组获得统计学明显较低的剪切粘合强度值(p = 0.002,F = 5.89),而在ZR和ZRHT组之间未观察到粘合强度的统计学显著差异(p> 0.05)。所有样本的失效模式主要是混合型失效模式。

综上所述,该研究结果显示,热处理和表面处理增加了二硅酸锂玻璃陶瓷与钛合金粘接的粘接强度,但对氧化锆/钛合金粘接没有影响。

原始出处:

Putra A, Chung KH, et al., Effect of Bonding and Rebonding on the Shear Bond Strength of Two-Piece Implant Restorations. J Prosthodont. 2019 Jan 28. doi: 10.1111/jopr.13024.

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    2019-07-09 huangdf
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    2019-02-15 lsndxfj
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    2019-02-15 sunylz