Accuracy of fit analysis of the patient-specific Groningen temporomandibular joint prosthesis

Total joint replacement (TJR) with a prosthesis can be indicated for patients severe temporomandibular (TMJ) dysfunction. Surgical accuracy is necessary correct translation of the preoperatively predicted functional outcome, wear, and biomechanical behaviour patient-specific TMJ-TJR prosthesis. This study describes first clinical applications according to Groningen principles (G-TMJ-TJR), which was developed validated in prior human cadaver test study. The aim this validate placement G-TMJ-TJR setting. It hypothesized that virtual surgical plan (VSP) combined guided would performed as predictably accurately series. All who received VSP-based between December 2017 March 2020 were included analysis based on postoperative cone beam computed tomography (CBCT) data. 11 prostheses could inserted using routine pre-auricular retromandibular approaches. Analysis VSPs CBCTs showed an average three-dimensional deviation 1.07 mm (standard 0.46 mm, range 0.33–1.91 mm) all fossa mandibular components. applied