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Total joint reconstruction using computer-assisted surgery with stock prostheses for a patient with bilateral TMJ ankylosis

 ( Rhee Seung-Hyun ) - Seoul National University Dental Hospital Department of Oral and Maxillofacial Surgery

백승학 ( Baek Seung-Hak ) - Seoul National University School of Dentistry Department of Orthodontics
 ( Park Sang-Hun ) - Seoul National University Dental Hospital Department of Oral and Maxillofacial Surgery
 ( Kim Jong-Cheol ) - MIR Dental Hospital
 ( Jeong Chun-Gi ) - Megagen Implant Division of Digital Business
 ( Choi Jin-Young ) - Seoul National University School of Dentistry Department of Oral and Maxillofacial Surgery

Abstract


Backgrounds: The purpose of this study is to discuss the total joint reconstruction surgery for a patient with recurrent ankylosis in bilateral temporomandibular joints (TMJs) using three-dimensional (3D) virtual surgical planning, computer-aided manufacturing (CAD/CAM)-fabricated surgical guides, and stock TMJ prostheses.

Case presentation: A 66-year-old female patient, who had a history of multiple TMJ surgeries, complained of severe difficulty in eating and trismus. The 3D virtual surgery was performed with a virtual surgery software (FACEGIDE, MegaGen implant, Daegu, South Korea). After confirmation of the location of the upper margin for resection of the root of the zygoma and the lower margin for resection of the ankylosed condyle, and the position of the fossa and condyle components of stock TMJ prosthesis (Biomet, Jacksonville, FL, USA), the surgical guides were fabricated with CAD/CAM technology. Under general anesthesia, osteotomy and placement of the stock TMJ prosthesis (Biomet) were carried out according to the surgical planning. At 2 months after the operation, the patient was able to open her mouth up to 30 mm without complication.

Conclusion: For a patient who has recurrent ankylosis in bilateral TMJs, total joint reconstruction surgery using 3D virtual surgical planning, CAD/CAM-fabricated surgical guides, and stock TMJ prostheses may be an effective surgical treatment option.

키워드

Total joint reconstruction; Recurrent TMJ ankylosis; 3D virtual surgical planning; CAD/CAM-fabricated surgical guides; Stock TMJ prostheses
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