Int J Comput Dent. 2022 Mar 24;25(1):57-70.
The aim of the present study was to review the current development status of additive manufacturing (AM) technology for fabricating frameworks for removable partial dentures (RPDs) considering fit accuracy, surface condition, and mechanical strength.
A search of the databases of MEDLINE, Cochrane Library, and Science Direct was conducted using definite keywords ("removable partial denture" or "framework" or "dental prosthesis design") and ("additive manufacturing technology" or "rapid prototyping" or "3D-printing").
A total of 23 articles were selected according to certain inclusion criteria. The direct AM techniques were applied to manufacture metal RPD frameworks consisting of selective laser melting (SLM), selective laser sintering (SLS), and metal binder jetting (MBJ). The SLM technique showed a good surface and mechanical strength, but low accuracy. The SLS technique showed higher accuracy than indirect AM, but further studies are required. The MBJ technique showed lower accuracy and a rougher surface than the conventional method.
AM techniques can produce RPD frameworks within the acceptable range for clinical practice; however, more clinical studies are needed.
本研究旨在回顾用于制作可摘局部义齿（RPD）支架的增材制造（AM）技术的当前发展状况，考虑其适配准确性、表面状况和机械强度。
使用明确的关键词（“可摘局部义齿”或“支架”或“义齿设计”）和（“增材制造技术”或“快速原型制作”或“3D 打印”）对 MEDLINE、Cochrane 图书馆和 Science Direct 数据库进行了搜索。
根据一定的纳入标准，共选择了 23 篇文章。直接 AM 技术应用于制造由选择性激光熔化（SLM）、选择性激光烧结（SLS）和金属粘结剂喷射（MBJ）组成的金属 RPD 支架。SLM 技术具有良好的表面和机械强度，但精度较低。SLS 技术的准确性高于间接 AM，但需要进一步研究。MBJ 技术的精度和表面粗糙度均低于传统方法。
AM 技术可生产出临床实践可接受范围内的 RPD 支架，但仍需要更多的临床研究。
