›› 2019, Vol. 39 ›› Issue (9): 1052-.doi: 10.3969/j.issn.1674-8115.2019.09.018

• Original article (Clinical research) • Previous Articles     Next Articles

Clinical application of Chinese customized TC4/UHMWPE connected total temporomandibular joint prostheses

CHEN Xu-zhuo1*, MAO Yi1*, ZHENG Ji-si1, JIANG Wen-bo2, ZHANG Shan-yong1, CHEN Ke3, YANG Chi1   

  1. 1. Department of Oral and Maxillofacial Surgery, Shanghai Ninth Peoples Hospital, Collage of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; 2. Center of 3D-printing Translational Medicine, Shanghai Ninth Peoples Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; 3. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Online:2019-09-28 Published:2019-11-02
  • Supported by:
    Foundation of Science and Technology Commission of Shanghai Municipality, 16441908800; Foundation of Shanghai Municipal Commission of Health and Family Planning, 201640001; Project of Shanghai Hospital Development Center, 16CR3104B; Research Fund of Medicine and Engineering of Shanghai Jiao Tong University, ZH2018ZDA13; Innovation Fund for Translational Medicine of Shanghai Jiao Tong University School of Medicine, TM201812; Snowball Project of Shanghai Ninth Peoples Hospital, Shanghai Jiao Tong University School of Medicine, GXQ201806）。

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Abstract: Objective · To introduce a standardized workflow for clinical application of Chinese customized TC4/UHMWPE connected total temporomandibular joint (TMJ) prostheses, and to evaluate its accuracy and clinical effectiveness. Methods · Eight patients with the end stage TMJ diseases were included in this study. The computed tomography (CT) data for patients were obtained and transformed into the Mimics 18.0 software preoperatively for the designing of the prostheses and digital templates. Three-dimensional (3D) printing, friction spot welding (FSW) and computer-aided manufacture (CAM) were used to fabricate different components of the prostheses. The effectiveness of intraoperative application and the accuracy of merging results were evaluated postoperatively. Results · With the guidance of digital templates and virtual surgical planning (VSP), all the prostheses were placed smoothly and fixed stably during surgical procedures. The merging results showed that the prostheses position matched with the preoperative design well, with an mean deviation of 0.417 mm (range: 0.279 to 0.561 mm) for the whole prosthesis system. All the patients exhibited good facial symmetry and satisfactory improvement in pain, function and mouth opening postoperatively. Conclusion · The standardized workflow ensures the accuracy and efficiency in clinical application of Chinese customized total TMJ prostheses.

Key words: temporomandibular joint, total temporomandibular joint prostheses, prosthesis design, clinical application

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