应用通用工业CAM技术实现金属全冠制作的初步探讨

Preliminary study of fabricating metal crown using general available CAM technique

目的:应用通用工业CAM技术,实现金属全冠制作,为口腔CAD/CAM研究建立开放的通用平台。方法:使用商品化扫描设备(3shape’s Dental System)获取全冠预备后的基牙数字化模型,扫描设备自带CAD软件进行牙冠设计,然后采用工业CAM软件UG4.0进行牙冠数据处理,生成可加工的实体模型,通过工业五轴机床(GF阿奇夏米尔)进行牙冠加工。结果:应用通用工业CAM技术,完成了金属全冠的CAD/CAM制作过程,全冠经试戴,边缘密合,咬合及邻接状况良好。结论:建立了通用的口腔CAD/CAM实验平台,推进了口腔CAD/CAM系统国产化进程。

Objective：To fabricate metal crown using general available CAM technique.Methods：A full crown tooth preparation of maxillary first molar was simulated on a standard stone model,the preparation was scanned and a digital model was generated by a commercial available digitizing method-3shape＇s Dental System,a digital crown model was designed with the same system,then the digital crown model was translated to a digital file by UG4.0 industrial CAM software,and the final digital file was transferred to a commercial available milling machine.Results：A full metal crown was fabricated through current available industrial digitizing and milling methods,acceptable marginal fit,occlusion and proximal contacts were obtained.Conclusion：A general approach for fabricating dental restorations was acquired which may facilitate future application.