Alloplastic total temporomandibular joint replacement using stock prosthesis: a one-year follow-up report of two cases

Abstract

Alloplastic total replacement of the temporomandibular joint (TMJ) was developed in recent decades. In some conditions, previous studies suggested the rationale behind alloplastic TMJ replacement rather than reconstruction with autogenous grafts. Currently, three prosthetic products are available and approved by the US Food and Drug Administration. Among these products, customized prostheses are manufactured, via computer aided design/computer aided manufacturing (CAD/CAM) system for customized design; stock-type prostheses are provided in various sizes and shapes. In this report, two patients (a 50-year-old female who had undergone condylectomy for the treatment of osteochondroma extending to the cranial base on the left condyle, and a 21-year-old male diagnosed with left temporomandibular ankylosis) were treated using the alloplastic total replacement of TMJ using stock prosthesis. The follow-up results of a favorable one-year, short-term therapeutic outcome were obtained for the alloplastic total TMJ replacement using a stock-type prosthesis.

Stability of the Natural Joint Side in Unilateral Alloplastic Total Temporomandibular Joint Replacement Using a Ready-Made System

“…Similarly, several studies comparing different TMJ replacement systems showed no relevant difference [24,26]. From an economic aspect, as patient-specific custom system is too expensive and the Korean national health care system currently supports only the ready-made system, the ready-made system is a more practical choice for Korean patients [13,29,30].…”

“…The Korean Ministry of Drug and Safety also approved the use of the Biomet Lorenz system for TMJ TJR. To date, this is the only approved system for TMJ TJR in Korea [13]. The Biomet Lorenz system is composed of a glenoid fossa and a ramus condylar component.…”

Myxofibrosarcoma Mimicking Inflammatory Lesion of Temporomandibular Joint—Case Presentation

“…For this procedure, either stock prostheses or custom prostheses can be used. The former is produced in different sizes and shapes [9] while the latter are customized using the CAD/CAM technique. It should be taken into consideration that the human skull presents a very high variability thus it is challenging to replace TMJ with a prefabricated prostheses [10].…”

Conservative condylectomy alone for the correction of mandibular asymmetry caused by osteochondroma of the mandibular condyle: a report of five cases

“…Moreover, when conservative condylectomy alone cannot completely remove the growing mass because of invasion below the condylar neck, appropriate radical resection is required to achieve stable results without recurrence. In addition, if the mandibular vertical height decreases after tumor removal, condylar reconstruction with bone grafting or alloplastic total TMJ replacement may be required 17 .…”