Correlation between microtensile bond strength data and clinical outcome of Class V restorations
Correlation between microtensile bond strength data and clinical outcome of Class V restorations
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DOI：
10.1016/j.dental.2010.09.005
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发表时间：
2011-02-01
期刊：
影响因子：
5
通讯作者：
Rousson, V.
中科院分区：
文献类型：
--
作者：
Heintze, Siegward D.;Thunpithayakul, Chaiyasri;Rousson, V.
Objective.确定树脂-牙本质微拉伸粘结强度（mu TBS）的结果是否与非固位型V类牙列临床研究的结果参数相关。从一个试验中心获得树脂-牙本质mu TBS数据;体外试验均由同一操作员进行。在粘合后8小时和将样品在水中储存6个月后进行mu TBS测试。分析中包括样本的试验前失效（PTF），将其归因于1 MPa的值。在文献中检索观察期至少为18个月的宫颈糜烂（V类）前瞻性临床研究。临床结果变量为固位丢失、边缘变色和边缘完整性。此外，还制定了一个指数，以便更好地比较实验室和临床结果。使用线性混合模型中的粘合效应估计值总结每种粘合剂在12 - 36个月之间的临床性能。计算这些临床表现与mu TBS值之间的斯皮尔曼相关性。统计分析中纳入了36项临床研究，包括15种粘合剂/修复系统，其mu TBS数据也可用。一般而言，3步和2步蚀刻和冲洗系统显示出比2步/3步自蚀刻系统更高的粘结强度值，然而，2步/3步自蚀刻系统产生比1步自蚀刻和树脂改性的玻璃离聚物系统更高的值。延长样本的水储存导致5种粘合剂系统的平均粘合强度值显著降低（Wilcoxon，p < 0.05）。储存8h和6个月后的mu TBS值与边缘变色之间存在显著相关性（分别为r = 0.54和r = 0.67）。然而，μ TBS值与留存率、临床指标或边缘完整性之间没有发现同样的相关性。显着性。由于粘附系统的mu TBS数据，特别是在水储存6个月后，显示出与短期临床V类牙列中的边缘变色的良好相关性，因此纵向临床试验应探讨早期边缘染色是否可预测非龋性宫颈牙列中未来的固位丧失。(C)2010年牙科材料学院。由爱思唯尔有限公司出版。保留所有权利。
Objective. To determine if the results of resin-dentin microtensile bond strength (mu TBS) is correlated with the outcome parameters of clinical studies on non-retentive Class V restorations.Methods. Resin-dentin mu TBS data were obtained from one test center; the in vitro tests were all performed by the same operator. The mu TBS testing was performed 8h after bonding and after 6 months of storing the specimens in water. Pre-test failures (PTFs) of specimens were included in the analysis, attributing them a value of 1MPa. Prospective clinical studies on cervical restorations (Class V) with an observation period of at least 18 months were searched in the literature. The clinical outcome variables were retention loss, marginal discoloration and marginal integrity. Furthermore, an index was formulated to be better able to compare the laboratory and clinical results. Estimates of adhesive effects in a linear mixed model were used to summarize the clinical performance of each adhesive between 12 and 36 months. Spearman correlations between these clinical performances and the mu TBS values were calculated subsequently.Results. Thirty-six clinical studies with 15 adhesive/restorative systems for which mu TBS data were also available were included in the statistical analysis. In general 3-step and 2-step etch-and-rinse systems showed higher bond strength values than the 2-step/3-step self-etching systems, which, however, produced higher values than the 1-step self-etching and the resin modified glass ionomer systems. Prolonged water storage of specimens resulted in a significant decrease of the mean bond strength values in 5 adhesive systems (Wilcoxon, p < 0.05). There was a significant correlation between mu TBS values both after 8h and 6 months of storage and marginal discoloration (r = 0.54 and r = 0.67, respectively). However, the same correlation was not found between mu TBS values and the retention rate, clinical index or marginal integrity.Significance. As mu TBS data of adhesive systems, especially after water storage for 6 months, showed a good correlation with marginal discoloration in short-term clinical Class V restorations, longitudinal clinical trials should explore whether early marginal staining is predictive for future retention loss in non-carious cervical restorations. (C) 2010 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.