基于逆向工程技术的人体牙模三维模型重构

发布时间：2018-08-16 09:27

【摘要】：由于人体牙模是由非常复杂的自由曲面构成,设计比较困难。传统牙模模型的测量数据都是通过游标卡尺在石膏模型直接测量,会产生很大的误差,并且石膏模型应用于临床医学也会存在很多缺陷。为了探究光敏树脂型材料牙模在临床应学的可行性,采用逆向工程和快速成型技术的三维模型重构方法,首先使用三坐标非接触式扫描仪对石膏模型进行扫描得到大量点云数据,然后利用Geomagic Studio软件完成对点云数据的处理和CAD三维模型的重建,生成三维实体,采用SPS450型号的3D打印机打印出树脂实体模型。最后使用三坐标接触式测量仪对石膏模型和已生成的树脂模型进行一些重要数据的测量,对实验得到的数据进行对比分析,结果显示测量数据误差均在1mm内,在允许的误差范围之内,符合医用要求。
[Abstract]:Because the human tooth mold is composed of very complicated free-form surface, it is difficult to design. The measurement data of traditional dental model are measured directly in gypsum model by Vernier caliper, which will cause great errors, and there will be many defects in the application of gypsum model in clinical medicine. In order to explore the feasibility of clinical application of Guang Min resin model, reverse engineering and rapid prototyping were used to reconstruct 3D model. Firstly, a large number of point cloud data are obtained by scanning gypsum model with 3D non-contact scanner, then the point cloud data processing and CAD 3D model reconstruction are completed by Geomagic Studio software, and 3D entity is generated. The resin solid model was printed out by using SPS450 model 3D printer. Finally, some important data of gypsum model and resin model have been measured by using three coordinate contact measuring instrument. The data obtained from the experiment are compared and analyzed. The results show that the errors of the measured data are all in 1mm. Within the allowable error range, meet the medical requirements.
【作者单位】：辽宁工业大学机械工程与自动化学院;辽宁医学院附属第二医院;
【基金】：辽宁省自然科学基金优秀人才培养项目(2015020170) 辽宁教育厅一般项目(L2015231) 辽宁省临床能力建设项目(LNCCC-D30-2015)
【分类号】：R78

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