Research Publications

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.

Keywords: Total joint reconstruction, Recurrent TMJ ankylosis, 3D virtual surgical planning, CAD/CAMfabricated surgical guides, Stock TMJ prostheses