Favasuli Luca, Mascarenhas Paulo S, Mauricio Paulo
Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, Campus Universitário, Quinta da Granja, Monte de Caparica, 2829-511 Almada, Portugal.
J Funct Biomater. 2022 Aug 15;13(3):120. doi: 10.3390/jfb13030120.
When implants are required in prosthodontics treatment, one of the most important decisions is the choice of the final crown and the type of connection to the implant through the abutment. Hybrid abutments are becoming a primary choice. They are projected and produced with materials whose properties guarantee the required mechanical features (including resistance) and take advantage of the hybrid abutment crown retention between screw and cement. However, a review of the mechanical resistance of the different abutment types and associated materials is still lacking. This review aimed to study the in vitro mechanical efficiency of the hybrid abutments used in oral rehabilitation.
A systematic review was conducted using the PubMed, B-on, and Google Scholar databases according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.
75 articles were identified from all databases, and 33 were selected after abstract screening. Thus, 21 studies were included in the review after full-text reading. Among the materials used for crowns, lithium disilicate was, aesthetically, the primary choice for its aesthetic and moderate strength. On the other hand, zirconia showed the best fracture resistance. Regarding the different kinds of abutments, there is still some lack of knowledge about the best design.
Within the limitations of this systematic review, we can conclude that hybrid pillars are an excellent choice for oral rehabilitation through implants, showing improved resistance when including materials such as zirconia and lithium disilicate.
在口腔修复治疗中需要植入物时，最重要的决策之一是最终牙冠的选择以及通过基台与植入物的连接类型。混合基台正成为首选。它们采用具有能保证所需机械性能（包括抗力）的材料进行设计和制造，并利用了螺丝固位和粘结固位相结合的混合基台牙冠固位方式。然而，目前仍缺乏对不同基台类型及相关材料机械抗力的综述。本综述旨在研究口腔修复中使用的混合基台的体外机械效率。
根据系统评价和Meta分析的首选报告项目（PRISMA）指南，使用PubMed、B-on和谷歌学术数据库进行系统评价。
从所有数据库中识别出75篇文章，经摘要筛选后选择了33篇。因此，经全文阅读后，本综述纳入了21项研究。在用于牙冠的材料中，从美观角度来看，二硅酸锂因其美观性和适中的强度成为首选。另一方面，氧化锆显示出最佳的抗折性。关于不同类型的基台，对于最佳设计仍存在一些知识空白。
在本系统评价的局限性内，我们可以得出结论，混合柱体是通过植入物进行口腔修复的极佳选择，当包含氧化锆和二硅酸锂等材料时，其抗力有所提高。
