A novel 3D-printed, patient-specific alloplastic temporomandibular joint replacement allowing enthesis reconstruction: a finite element analysis

This study aims to evaluate the mechanical performance of a unique, state-of-the-art, patient-specific alloplastic total replacement system for temporomandibular joint that allows enthesis reconstruction developed by CADskills BV (Ghent, Belgium), and its influence on remaining adjacent healthy tissue, looking into magnitude location stresses micromotions. Because reattachment lateral pterygoid muscle is having never before been used in prostheses, loading patterns may be completely different from existing devices their analyses. Therefore, multiple finite element models were created compare devices, prosthetic device, situations. These investigate such prostheses through evaluation micromotion, opposite joint, strain bone condyle, stress shielding. The results showed subject considerably below yield strength, except polyethylene fossa component, which might undergo abrasion under extreme muscular loads (larger than occurring during activities daily living). Additionally, implant was shown have little compared model. Furthermore, dynamic model shows how load upon increase when maximum activation takes place with mouth open.