Xinyu Luo, Xiangfeng Meng
Dept. of Prosthodontics, Nanjing Stomatological Hospital, The Affiliated Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, China;Wuxi Yaboshi Dental Clinic, Wuxi 214000, China.
Dept. of Prosthodontics, Nanjing Stomatological Hospital, The Affiliated Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, China.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2017 Feb 1;35(1):89-92. doi: 10.7518/hxkq.2017.01.014.
This research estimated shear bond durability of zirconia and different substrates cemented by two self-adhesive resin cements (Clearfil SA Luting and RelyX U100) before and after aging conditioning.
Machined zirconia ceramic discs were cemented with four kinds of core material (cobalt-chromium alloy, flowable composite resin core material, packable composite resin, and dentin) with two self-adhesive resin cements (Clearfil SA Luting and RelyX U100). All specimens were divided into eight test groups, and each test group was divided into two subgroups. Each subgroup was subjected to shear test before and after 10 000 thermal cycles.
All factors (core materials, cements, and thermal cycle) significantly influenced bond durability of zirconia ceramic (P<0.00 1). After 10 000 thermal cycles, significant decrease was not observed in shear bond strength of cobalt-chromium alloy luted with Clearfil SA Luting (P>0.05); observed shear bond strength was significantly higher than those of other substrates (P<0.05). Significantly higher shear bond strength was noted in Clearfil SA Luting luted with cobalt-chromium alloy, flowable composite resin core material, and packable composite resin than that of RelyX U100 (P<0.05). However, significant difference was not observed in shear bond strength of dentin luted with Clearfil SA Luting and RelyX U100 (P>0.05).
CONCLUSIONS: Different core materials and self-adhesive resin cements can significantly affect bond durability of zirconia ceramic. .
本研究评估了两种自粘接树脂水门汀（Clearfil SA Luting和RelyX U100）粘接的氧化锆与不同基底材料在老化处理前后的剪切粘接耐久性。
用两种自粘接树脂水门汀（Clearfil SA Luting和RelyX U100）将加工好的氧化锆陶瓷盘与四种核心材料（钴铬合金、可流动复合树脂核心材料、可压实复合树脂和牙本质）进行粘接。所有标本分为八个试验组，每个试验组又分为两个亚组。每个亚组在10000次热循环前后进行剪切试验。
所有因素（核心材料、水门汀和热循环）均显著影响氧化锆陶瓷的粘接耐久性（P<0.001）。在10000次热循环后，用Clearfil SA Luting粘接的钴铬合金的剪切粘接强度未观察到显著降低（P>0.05）；观察到的剪切粘接强度显著高于其他基底材料（P<0.05）。用Clearfil SA Luting粘接钴铬合金、可流动复合树脂核心材料和可压实复合树脂时，其剪切粘接强度显著高于用RelyX U100时（P<0.05）。然而，用Clearfil SA Luting和RelyX U100粘接牙本质时，剪切粘接强度未观察到显著差异（P>0.05）。
不同的核心材料和自粘接树脂水门汀可显著影响氧化锆陶瓷的粘接耐久性。
