Di Fiore Adolfo, Zuccon Andrea, Carraro Filippo, Basilicata Michele, Bollero Patrizio, Bruno Giovanni, Stellini Edoardo
Department of Neuroscience, Section of Prosthetic and Digital Dentistry, University of Padova, 35122 Padova, Italy.
Department of Systems Medicine, University of Rome Tor Vergata, 00133 Roma, Italy.
J Clin Med. 2023 Jul 31;12(15):5048. doi: 10.3390/jcm12155048.
Different methods are used for the analysis of marginal and internal fit of partial crowns, but not all of them are applicable for in vivo studies. The aim of this review is to search the available methods, described in the current literature, to assess marginal and internal fit in partial crowns.
an electronic search was performed on Pubmed and Web of Science databases to find studies published from 1 January 2017 up to 2 March 2023, following PRISMA guidelines and Cochrane handbook for systematic reviews. The search strategy applied was: "(marginal) AND (fit OR gap OR adaptation OR discrepancy) AND (inlay OR onlay OR partial crown)". In vitro studies which evaluated marginal and internal fit on CAD CAM or 3D printed partial crowns were included in this review. Quality of the studies was assessed by using Quality Assessment Tool For In Vitro Studies (QUIN tool).
22 studies were included. Among conventional methods, direct view with microscope, indirect view on resin replicas, and silicone replica technique (SRT) were used. Considering new digital methods, micro-CT, SRT 3D and triple scan technique (TST) were applied.
Among 2D methods, direct view technique is the most used marginal fit analysis. For a more comprehensive evaluation, a 3D digital analysis is suggested. SRT and indirect view are the only 2D methods available for in vivo analysis. A protocol for the application of TST for assessment in vivo is now available, but no studies are reported in literature yet.
不同方法用于分析部分冠的边缘适合性和内部适合性，但并非所有方法都适用于体内研究。本综述的目的是检索当前文献中描述的可用方法，以评估部分冠的边缘适合性和内部适合性。
按照PRISMA指南和Cochrane系统评价手册，在PubMed和Web of Science数据库中进行电子检索，以查找2017年1月1日至2023年3月2日发表的研究。应用的检索策略为：“（边缘的）AND（适合性或间隙或适应性或差异）AND（嵌体或高嵌体或部分冠）”。本综述纳入了评估CAD CAM或3D打印部分冠边缘适合性和内部适合性的体外研究。使用体外研究质量评估工具（QUIN工具）评估研究质量。
纳入22项研究。在传统方法中，使用了显微镜直视、树脂复制体间接观察和硅橡胶复制体技术（SRT）。在新的数字方法中，应用了微型CT、SRT 3D和三重扫描技术（TST）。
在二维方法中，直视技术是最常用的边缘适合性分析方法。为了进行更全面的评估，建议进行三维数字分析。SRT和间接观察是仅有的可用于体内分析的二维方法。目前已有TST用于体内评估的方案，但尚无文献报道相关研究。
