A systematic review and meta-analysis was performed to analyze the survival of onlay restorations in the posterior region, their clinical behavior according to the material used (ceramic reinforced with lithium disilicate, conventional feldspathic ceramic or reinforced with leucite; hybrid materials and composite), possible complications, and the factors influencing restoration success. The systematic review was based on the preferred reporting items for systematic reviews and meta-analyses (PRISMA) statement, without publication date or language restrictions. An electronic search was made in the PubMed, Scopus, Embase, and Cochrane databases. After discarding duplicate publications and studies that failed to meet the inclusion criteria, the articles were selected based on the population, intervention, comparison, outcome (PICO) question. The following variables were considered in the qualitative and quantitative analyses: restoration survival rate (determined by several clinical parameters), the influence of the material used upon the clinical behavior of the restorations, and the complications recorded over follow-up. A total of 29 articles were selected for the qualitative analysis and 27 for the quantitative analysis. The estimated restoration survival rate was 94.2%. The predictors of survival were the duration of follow-up (beta = −0.001; p = 0.001) and the onlay material used (beta = −0.064; p = 0.028). Composite onlays were associated with a lower survival rate over time. Onlays are a good, conservative, and predictable option for restoring dental defects in the posterior region, with a survival rate of over 90%. The survival rate decreases over time and with the use of composite as onlay material.

中文翻译：

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陶瓷，混合和复合材料的临床行为。系统评价和荟萃分析

进行了系统的回顾和荟萃分析，以分析后牙覆盖修复体的存活情况，根据所用材料（用二硅酸锂增强的陶瓷，传统的长石质陶瓷或用白云石增强的陶瓷；混合材料和复合材料）的临床行为，可能的并发症，以及影响修复成功的因素。系统评价基于系统评价和荟萃分析（PRISMA）声明的首选报告项目，没有发表日期或语言限制。在PubMed，Scopus，Embase和Cochrane数据库中进行了电子搜索。在丢弃重复的出版物和不符合纳入标准的研究后，根据人群，干预，比较，结果（PICO）问题选择文章。在定性和定量分析中考虑了以下变量：修复体的存活率（由多个临床参数确定），所用材料对修复体临床行为的影响以及随访中记录的并发症。总共选择了29篇文章进行定性分析，并选择了27篇进行定量分析。估计的恢复存活率为94.2％。生存的预测因素是随访的持续时间（β= -0.001；总共选择了29篇文章进行定性分析，并选择了27篇进行定量分析。估计的恢复存活率为94.2％。生存的预测因素是随访的持续时间（β= -0.001；总共选择了29篇文章进行定性分析，并选择了27篇进行定量分析。估计的恢复存活率为94.2％。生存的预测因素是随访的持续时间（β= -0.001；p = 0.001）和使用的覆盖材料（beta = -0.064; p = 0.028）。随着时间的推移，复合材料覆盖物的存活率较低。嵌体是修复后牙区域缺损的良好，保守且可预测的选择，生存率超过90％。随着使用复合材料作为覆盖材料，存活率随时间降低。