【摘要】 针对日益迫切的快速和高质量的口腔修复需要,我们试验了制作磨牙金属CAD/CAM基底冠的全过程。首先,利用三维光栅测量仪对牙预备体模型进行数据测量,获得磨牙表面的三维网格模型;然后,根据自主研发设计的基底冠设计软件对模型进行等距、裁剪和过渡等操作,构造出基底冠的三维模型;最后,在高速数控雕刻机上加工出实物。结果表明,加工的基底冠实物不但和预备体的贴合程度比较理想,而且质量稳定、精度高。更多还原

【Abstract】 In order to satisfy the current demand for fast and high-quality prosthodontics,we have carried out a research in the fabrication process of the porcelain fused to metal crown on molar with CAD/CAM technology.Firstly,we get the data of the surface mesh on preparation teeth through a 3D-optical grating measuring system.Then,we reconstruct the 3D-model crown with the computer-aided design software which was developed by ourselves.Finally,with the 3D-model data,we produce a metallic crown on a high-speed CNC carving machine.The result has proved that the metallic crown can match the preparation teeth ideally.The fabrication process is reliable and efficient,and the restoration is precise and steady in quality.更多还原