Three-Dimensional Measurement and Cluster Analysis for Determining the Size Ranges of Chinese Temporomandibular Joint Replacement Prosthesis.
Three-Dimensional Measurement and Cluster Analysis for Determining the Size Ranges of Chinese Temporomandibular Joint Replacement Prosthesis.
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DOI：
10.1097/md.0000000000002897
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发表时间：
2016-02
期刊：
影响因子：
1.6
通讯作者：
Chang YS
中科院分区：
文献类型：
--
作者：
Zhang LZ;Meng SS;He DM;Fu YZ;Liu T;Wang FY;Dong MJ;Chang YS
本研究旨在探讨国人颞下颌关节的骨性结构特征，为全关节假体的设计提供依据。选择上海市第九人民医院放射科448例（男226例，女222例，年龄20 ~ 83岁，平均年龄39.3岁）正常颞下颌关节896个，进行CT扫描。采用ProplanCMF1.4软件进行颅骨重建。对颞下颌关节窝和髁突-升支单位进行了13个参数的三维（3D）测量。假体设计的尺寸聚类通过层次聚类分析、非层次（K均值）聚类分析和判别分析确定。将关节窝分为3簇，髁突-升支单位分为4簇。判别分析能够正确分类97.24%的关节盂窝和94.98%的髁支单位。确定每个聚类中参数值的平均值和标准差。髁突窝深度和髁突升支夹角是国人颞下颌关节假体设计的重要参数。通过对颞下颌关节骨性形态的三维测量和聚类分析，为颞下颌关节的解剖学研究提供了参考，并确定了中国人颞下颌关节置换术所需的最小数量假体的尺寸。
The aim of this study was to investigate the osseous characteristics of Chinese temporomandibular joint (TMJ) and detect the size clusters for total joint prostheses design. Computer tomography (CT) data from 448 Chinese adults (226 male and 222 female, aged from 20 to 83 years, mean age 39.3 years) with 896 normal TMJs were chosen from the Department of Radiology in the Shanghai 9th People's Hospital. Proplan CMF 1.4 software was used to reconstruct the skulls. Three-dimensional (3D) measurements of the TMJ fossa and condyle-ramus units with 13 parameters were performed. Size clusters for prostheses design were determined by hierarchical cluster analyses, nonhierarchical (K-means) cluster analysis, and discriminant analysis. The glenoid fossa was grouped into 3 clusters, and the condyle-ramus units were grouped into 4 clusters. Discriminant analyses were capable of correctly classifying 97.24% of the glenoid fossa and 94.98% of the condyle-ramus units. The means and standard deviations for the parameter values in each cluster were determined. Fossa depth and angles between the condyle and ramus were important parameters for Chinese TMJ prostheses design. 3D measurements and cluster analysis of the osseous morphology of the TMJ provided an anatomical reference and identified the dimensions of the minimum numbers of prosthesis sizes required for Chinese TMJ replacement.