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目的通过对中国人颞下颌关节骨性结构进行三维测量和聚类分析,为人工关节假体的设计和选型提供依据。方法选取2011年1月至2015年12月在上海交通大学医学院附属第九人民医院因非颞下颌关节疾病就诊,进行颌面部CT扫描的中国人患者448例(797侧正常颞下颌关节)进行研究。采用Proplan CMF 1.4软件对其颌面部CT扫描数据进行三维重建,选择13项特征性指标对关节窝及髁突进行三维测量,并对数据进行统计分析和聚类分析,以确定人工关节假体的设计类型。结果初步建立了中国人颞下颌关节骨性结构的解剖数据库,13项测量指标性别差异均有统计学意义。聚类结果显示中国人的颞下颌关节窝分为3种类型,髁突分为4种类型(判别分析:关节窝数据准确率97.24%、髁突-下颌支数据准确率94.98%)。结论中国人颞下颌关节骨性结构的三维测量和聚类分析为人工关节假体的设计选型提供了依据。
Objective To provide a basis for the design and selection of artificial joint prosthesis through three-dimensional measurement and cluster analysis of the bony structure of Chinese temporomandibular joint. METHODS: From January 2011 to December 2015, 448 Chinese patients (797 normal temporomandibular joint) undergoing maxillofacial CT scan at the Ninth People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine for non-temporomandibular joint disease were selected. research. The Proplan CMF 1.4 software was used to reconstruct the maxillofacial CT scan data. Thirteen characteristic indexes were selected for three-dimensional measurement of the joint fossa and condyle, and the data were analyzed statistically and clustered to determine whether the artificial joint prosthesis The type of design. Results The anatomical database of the temporomandibular joint bony structure was initially established in China. There were significant differences in the sex differences among the 13 measurements. The cluster results showed that the temporomandibular joint fossa in China were divided into three types and the condyles were divided into four types (discriminant analysis: the accuracy of the data of joint and socket was 97.24% and the accuracy of condylar and mandibular branch was 94.98%). Conclusion The three-dimensional measurement and clustering analysis of the temporomandibular joint bony structure in Chinese provide the basis for the design selection of artificial joint prosthesis.