Department of Removable Partial Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.
J Prosthodont Res. 2022 Jan 11;66(1):53-67. doi: 10.2186/jpr.JPR_D_20_00117. Epub 2021 Jan 26.
PURPOSE: This study comprehensively reviewed the current status of the digital workflow of removable partial dentures (RPDs) and summarized information about the fabrication methods and material properties of the dental framework, artificial teeth, and denture base. STUDY SELECTION: We performed a systematic review of the literature published in online databases from January 1980 to April 2020 regarding RPD fabrication and materials used in the related digital technology. We selected eligible articles, retrieved information regarding digital RPDs, and conducted qualitative/quantitative analyses. In this paper, the computer-aided design/computer-aided manufacturing (CAD/CAM) framework, artificial teeth, and denture base materials are reported. RESULTS: A variety of materials, such as cobalt-chromium alloy, titanium, zirconia, and polyether ether ketone, are used for dental CAD/CAM frameworks. The mechanical strength of the metal materials used for the CAD/CAM framework was superior to that of the cast framework. However, the fitness and surface roughness of the framework and clasp fabricated using a selective laser melting (SLM) method were not superior to those obtained via cast fabrication. Most material properties and the surface roughness of poly methyl methacrylate (PMMA) discs used for digital RPDs were superior to those of heat-cured PMMA. CONCLUSION: The use of a CAD/CAM framework and PMMA disc for digital RPDs offers numerous advantages over conventional RPDs. However, technical challenges regarding the accuracy and durability of adhesion between the framework and denture base remain to be solved. In digital fabrication, human technical factors influence the quality of the framework.
目的:本研究全面综述了可摘局部义齿(RPD)数字化流程的现状,并总结了牙科支架、人工牙和义齿基托的制作方法和材料性能的相关信息。
研究选择:我们对 1980 年 1 月至 2020 年 4 月期间在线数据库中发表的有关 RPD 制作和相关数字技术中使用材料的文献进行了系统综述。我们选择了合格的文章,检索了有关数字 RPD 的信息,并进行了定性/定量分析。本文报告了计算机辅助设计/计算机辅助制造(CAD/CAM)支架、人工牙和义齿基托材料。
结果:多种材料,如钴铬合金、钛、氧化锆和聚醚醚酮,被用于牙科 CAD/CAM 支架。CAD/CAM 支架中使用的金属材料的机械强度优于铸造支架。然而,选择性激光熔化(SLM)方法制造的 CAD/CAM 支架和卡环的适配性和表面粗糙度并不优于铸造制造。数字 RPD 中使用的聚甲基丙烯酸甲酯(PMMA)盘的大多数材料性能和表面粗糙度均优于热固性 PMMA。
结论:与传统 RPD 相比,CAD/CAM 支架和 PMMA 盘在数字 RPD 中的应用具有诸多优势。然而,在准确性和支架与义齿基托之间的附着力耐久性方面仍存在技术挑战。在数字化制作中,人为技术因素会影响支架的质量。
J Prosthodont Res. 2019-6-20
Int J Environ Res Public Health. 2022-7-13
J Prosthet Dent. 2021-4
Zhonghua Kou Qiang Yi Xue Za Zhi. 2021-5-9
J Prosthet Dent. 2019-4-1