摘要
目的:将计算机辅助设计与快速成型技术相结合,应用于牙冠延长术手术模板的设计与制作,初步探索可行的方案。方法:利用三维扫描仪对1位需行牙冠延长术患者的上颌牙列石膏模型进行扫描。遵循龈缘形态的美学原则,结合患者口腔实际情况,对点云数据进行编辑,生成代表龈缘形态的3D曲线。按照曲线位置确定模板区域,通过抽壳等操作获取模板的三维数据模型。最后将数据导入快速成型机,加工出树脂模板。结果:初步实现了牙冠延长术手术模板的计算机辅助设计与制作;提高了术中定位切口的速度和准确性。结论:计算机辅助设计与快速成型技术相结合制作牙冠延长术模板,为科学设计龈缘的位置和形态提供了一种可行的方法。
PURPOSE: To introduce a method applied in computer aided design and computer aided manufacture(CADCAM) of template for crown lengthening.METHODS: Point cloud data of dental stone model of the patient in the plan of crown lengthening surgery was obtained by laser scanning.The following processes were carried out,constructing 3-D curve of the gingiva,drawing template outline on the triangle mesh model,shelling it for 3-D model of template,and transferring the data to rapid prototyping equipment for manufacture.RESULTS: 3-D model of the template was preliminarily accomplished.The resin template was manufactured with rapid prototyping equipment.The fitness between resin template and plaster model was good.CONCLUSIONS: This method,as an integrated procedure including data acquisition,3-D computer modeling and fabrication by rapid prototyping,is feasible to implement CAD-CAM of template for crown lengthening.
出处
《上海口腔医学》
CAS
CSCD
北大核心
2013年第4期443-447,共5页
Shanghai Journal of Stomatology
关键词
计算机辅助设计
快速成型技术
牙冠延长术
模板
Computer-aided design
Rapid prototyping
Crown lengthening surgery
Template