Accuracy of different registration methods for laser-scanned dental cast data and maxillofacial cone-bean CT data
10.3760/cma.j.issn.1002-0098.2013.03.012
- VernacularTitle:牙颌模型激光扫描数据与锥形束CT数据配准方法的精度比较
- Author:
Yi-Jiao ZHAO
1
;
Fu-Song YUAN
;
Xiao-Yan XIE
;
Yu-Chun SUN
;
Yi LIU
;
Yong WANG
Author Information
1. 100081,北京大学口腔医学院·口腔医院口腔医学计算机应用中心口腔数字化医疗技术和材料国家工程实验室卫生部口腔医学计算机应用工程技术研究中心
- Keywords:
Cone-beam computed tomography;
Computer-aided design;
Laser scanning;
Registration
- From:
Chinese Journal of Stomatology
2013;48(3):173-176
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the accuracy of four dominant methods of three-dimensional multisource data registration.Methods Laser-scanned dental model and maxillofacial cone-bean CT rebuilt model were collected for one orthodontic patient before treatment.Registration process was done based on locating spheres' center,anatomic landmarks,partial characteristic region and global data separately.The registration errors were detected by the function of Geomagic Studio 12.0 software.A comparison of the registration accuracy among these four methods was done by analyzing mean error and standard deviation.Results The mean errors and standard deviations of methods of locating spheres' center,anatomic landmarks,partial characteristic region and global data were-(0.082 ± 0.221),-(0.104 ±0.218),-(0.047 ±0.138) and-(0.025 ±0.129) mm respectively.Conclusions ICP registration methods had better reliability than landmark methods.The global registration was more accurate than partial characteristic region registration and the locating spheres' center method was better than anatomic landmarks method.