Application of digital template to guide total temporomandibular joint replacement surgery of Biomet replacement system

Abstract

Abstract: PURPOSE: To investigate the application of digital template in total temporomandibular joint (TMJ) replacement. METHODS: Six patients who needed total temporomandibular joint replacement surgery from Nov. 2013 to Mar. 2014 were included in this study. Preoperative design was performed using the ProPlan CMF 1.4 software. The total TMJ replacement prostheses of Biomet system were scanned and imported into the software, and were simulated to be placed at the appropriate position. Then the osteotomy line and trimming scope were determined, and digital templates for assisting bone trimming and prosthesis implantation were designed accordingly. Rapid prototyping (RP) technique was used to make the templates. Intraoperative application effect and merging result of postoperative and preoperative CT were evaluated and analyzed. RESULTS: Intraoperative navigation worked accurately. Important anatomical structures such as the skull base and inferior alveolar neurovascular bundle were not injured during surgery. The result of postoperative CT merged with preoperative CT showed the prostheses position matched with the preoperative design well with an error of (1.139±0.183) mm. CONCLUSIONS: Digital template can be regarded as an effective assist for total TMJ replacement surgery of Biomet system.

Key words: Digital template, Temporomandibular joint, Total joint replacement surgery

CLC Number:

R782.6

BAI Guo, HE Dong-mei, YANG Chi, LU Chuan, HUANG Dong, CHEN Min-jie, ZHANG Xiao-hu, YUAN Jian-bing. Application of digital template to guide total temporomandibular joint replacement surgery of Biomet replacement system[J]. China Journal of Oral and Maxillofacial Surgery, 2015, 13(1): 21-27.

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