Evaluation of the accuracy of a common regional registration method for three-dimensional reconstruction of edentulous jaw relation by a 7-axis three-dimensional measuring system
Evaluation of the accuracy of a common regional registration method for three-dimensional reconstruction of edentulous jaw relation by a 7-axis three-dimensional measuring system
复制标题
七轴三维测量系统三维重建无牙颌关系常用区域配准方法的精度评估
DOI：
10.3233/bme-130930
复制
发表时间：
2014-01-01
影响因子：
1
通讯作者：
Wang, Yong
中科院分区：
文献类型：
--
作者：
Sun, Yuchun;Yuan, Fusong;Wang, Yong
本研究旨在设计一种基于7轴接触式三维测量系统的牙颌模型空间关系三维重建精度的定量评价方法，并评价一种常用的无牙颌关系区域配准方法的重建精度。使用牙科扫描仪获得5名患者的10个定位圆柱和蜡咬合边缘的无牙颌模型的3D表面数据。使用Geomagic软件中的共同区域配准重建颌骨关系。以上颌模型基平面为参考平面，测量两个源的直线长度、中心点之间的垂直距离和水平距离。对测量数据进行统计学描述。(k)每个数据集的中心点之间的线长度、垂直距离和水平距离的横截线+/- s分别为0.107 +/- 0.354、0.076 +/- 0.576和0.108 +/- 0.530 mm。数据分析采用配对t检验和单因素方差分析。各患者的配对t检验和5例患者的单因素方差分析结果均无显著性差异（P>0.05）。采用Faro Edge系统和标准化定位柱，定量评价无牙颌关系的三维重建精度是可行的。普通区域配准方法的配准结果符合临床要求。
This study was to design a method to quantitatively evaluate three-dimensional (3D) reconstruction accuracy of spatial relationship of dental models based on a 7-axis contact 3D measuring system, and to evaluate the accuracy of a common regional registration method for edentulous jaw relation reconstruction. 3D surface data of edentulous dental casts with 10 positioning cylinders and wax occlusion rims of five patients were obtained using a dental scanner. The jaw relation was reconstructed using the common regional registration in the Geomagic software. Measurements were obtained for line length, vertical distance and horizontal distance between centric points from two sources with upper jaw model base plane as a reference plane. The statistical description of measurement data was done. (k) over bar +/- s of line length, vertical distance and horizontal distance between the center points of each data set were 0.107 +/- 0.354, 0.076 +/- 0.576 and 0.108 +/- 0.530 mm, respectively. Data was analyzed using the paired samples t-test and one-way analysis of variance. Paired t-test results of each patient and one-way analysis of variance for the five patients showed no significant differences (P>0.05). Using the Faro Edge system and standardized positioning cylinders, quantitative evaluation of the 3D reconstruction accuracy of edentulous jaw relation was workable. And results of common regional registration method met clinical requirements.