Operative Dentistry Dept., Faculty of Dentistry, Mansoura University, Algomhoria Street, Mansoura, Aldakhlia, Egypt Po (box) 35516.
J Dent. 2021 Sep;112:103740. doi: 10.1016/j.jdent.2021.103740. Epub 2021 Jul 4.
The aim of this study was to clinically evaluate the 5-years clinical performance of indirect resin composite inlays luted with three different resin cement strategies in MOD Class II restorations.
A randomized clinical trial was conducted following CONSORT guidelines. Forty patients with three large cavities indicated for indirect MOD Class II restorations were enrolled in the current study. Then, 120 indirect resin composite inlay restorations (SR Nexco) were placed and luted with three different resin cement strategies (n=40); an etch-and-rinse (Variolink N), self-etch (Panavia F2.0) and self-adhesive (RelyX Unicem). These restorations were evaluated to the periods of 1 week (baseline), 1, 3 and 5 years using modified USPHS criteria. Statistical analyses were performed with Wilcoxon and Friedman tests with level of significance set at 0.05.
The outcome of the clinical trial showed that, there was neither loss of restorations nor recurrent caries after 5 years for all luting cements groups. Both self-etch Panavia F2.0 and self-adhesive RelyX Unicem resin cements exhibited significant differences between the evaluation periods regarding to marginal discoloration and marginal adaptation (p=0.03). At baseline, only 8 cases of etch-and-rinse (Variolink N) resin cement group exhibited post-operative sensitivity which were relieved after short time (p=0.04).
All the three resin cement strategies tested, showed acceptable clinical performance after 5-years recall period. In time, etch-and-rinse resin cement group showed better clinical performance regarding marginal discoloration and marginal adaptation at 5-years recall period. Clinical Relevance statement:In vitro and in vivo studies reveal contradictory evidence of the clinical performance of indirect resin composite inlays luted with different resin cement strategies. Thus, this study revealed that etch-and-rinse resin cement still has the best prognosis for adhesive luting of indirect resin composite inlays.
本研究旨在临床评估三种不同树脂粘结剂策略在 MOD 类 II 修复体中粘结间接树脂复合嵌体的 5 年临床性能。
根据 CONSORT 指南进行随机临床试验。纳入了当前研究的 40 名有 3 个大龋洞需进行间接 MOD 类 II 修复的患者。然后，将 120 个间接树脂复合嵌体修复体（SR Nexco）放置并用三种不同的树脂粘结剂策略（n=40）粘结：酸蚀冲洗（Variolink N）、自酸蚀（Panavia F2.0）和自粘结（RelyX Unicem）。使用改良的 USPHS 标准在 1 周（基线）、1、3 和 5 年期间对这些修复体进行评估。统计分析采用 Wilcoxon 和 Friedman 检验，显著性水平设为 0.05。
临床试验结果表明，所有粘结剂组在 5 年后均未发生修复体丢失或继发龋。自酸蚀 Panavia F2.0 和自粘结 RelyX Unicem 树脂粘结剂在边缘变色和边缘适应性方面在评估期间均存在显著差异（p=0.03）。基线时，只有 8 例酸蚀冲洗（Variolink N）树脂粘结剂组出现术后敏感，经短期缓解（p=0.04）。
在 5 年的随访期内，所有三种测试的树脂粘结剂策略均显示出可接受的临床性能。随着时间的推移，酸蚀冲洗树脂粘结剂组在 5 年的随访期内显示出更好的临床性能，表现在边缘变色和边缘适应性方面。
体外和体内研究对不同树脂粘结剂策略粘结间接树脂复合嵌体的临床性能提供了相互矛盾的证据。因此，本研究表明，酸蚀冲洗树脂粘结剂对间接树脂复合嵌体的粘结仍具有最佳的预后。
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