为了探索应用激光快速成形(LRF)技术制作纯钛基底冠的可行性,通过激光扫描测量模拟了基牙的铝合金代型并三维重建其数字化外形,采用计算机辅助设计了基底冠。通过正交实验优化基底冠加工参数,将基底冠数据与加工参数导入快速成形系统加工10个纯钛基底冠。将完成的纯钛基底冠在铝合金代型上就位粘接,进行边缘适合性检测,评估加工精度。得到激光快速成形技术可以进行纯钛基底冠的加工,边缘适合性检测结果表明10个基底冠的各点间隙大小与临床120μm可接受的标准相比,均显著小于120μm。 In order to explore the feasibility of using laser rapid prototyping (LRF) technology to make pure titanium base crowns, the aluminum crown of dental abutments was modeled by laser scanning and reconstructed three-dimensionally. The crown was designed by computer. Orthogonal experiments were used to optimize the processing parameters of the basal crowns, and the basal crown data and processing parameters were introduced into the rapid prototyping system to process 10 pure titanium basal crowns. The completed titanium base crown in place on the aluminum alloy bonding, edge suitability testing to assess the processing accuracy. Laser rapid prototyping technology can be used for the processing of pure titanium crown. The edge suitability test results show that the clearances of each point of the 10 basal crests are significantly less than 120μm compared with the acceptable standard of 120μm.