[Prosthetic replacement of condylar head for management of traumatic temporomandibular joint ankylosis]. 2009

Jin-gang An, and Yi Zhang, and Jin-quan He, and Yang He, and Jiang-ming Li
Department of Oral and Maxillofacial Surgery, Peking University School, Beijing 100081, China.

OBJECTIVE To preliminarily evaluate the method of using titanium condylar protheses in management of traumatic temporomandibular joint ankylosis. METHODS Between August 2006 and April 2008, titanium condylar replacement was performed in 5 male patients. Preoperative CT datum of patient was obtained and a resin model was then produced and used as a reference to select a suitable titanium condyle for reconstruction of the joint. In the operation, the bony ankylosis was removed. According to the preoperation planning, the selected prosthesis was inserted and fixed to the distal mandibular segment. The results were assessed by means of examinations and measurements postoperatively and during follow-up. RESULTS The 5 patients received alloplastic replacement of 6 condyles. Three patients were under follow-up and follow-up time ranged from 8 months to 2 years and 6 months. The mean mouth opening was 30 mm. Two patients had good occlusion and one patient developed a slight open bite. CONCLUSIONS Prosthetic condylar replacement can provide a choice for management of traumatic temporomandibular joint ankylosis.

UI MeSH Term Description Entries
D008297 Male Males
D008335 Mandibular Condyle The posterior process on the ramus of the mandible composed of two parts: a superior part, the articular portion, and an inferior part, the condylar neck. Condyle, Mandibular,Condyles, Mandibular,Mandibular Condyles
D003766 Dental Occlusion The relationship of all the components of the masticatory system in normal function. It has special reference to the position and contact of the maxillary and mandibular teeth for the highest efficiency during the excursive movements of the jaw that are essential for mastication. (From Jablonski, Dictionary of Dentistry, 1992, p556, p472) Canine Guidance,Occlusal Guidance,Occlusal Plane,Occlusion, Dental,Dental Occlusions,Guidance, Canine,Guidance, Occlusal,Occlusal Guidances,Occlusal Planes,Occlusions, Dental,Plane, Occlusal,Planes, Occlusal
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000844 Ankylosis Fixation and immobility of a joint. Ankyloses
D013704 Temporomandibular Joint An articulation between the condyle of the mandible and the articular tubercle of the temporal bone. TMJ,Joint, Temporomandibular,Joints, Temporomandibular,Temporomandibular Joints
D013705 Temporomandibular Joint Disorders A variety of conditions affecting the anatomic and functional characteristics of the temporomandibular joint. Factors contributing to the complexity of temporomandibular diseases are its relation to dentition and mastication and the symptomatic effects in other areas which account for referred pain to the joint and the difficulties in applying traditional diagnostic procedures to temporomandibular joint pathology where tissue is rarely obtained and x-rays are often inadequate or nonspecific. Common diseases are developmental abnormalities, trauma, subluxation, luxation, arthritis, and neoplasia. (From Thoma's Oral Pathology, 6th ed, pp577-600) TMJ Disorders,TMJ Diseases,Temporomandibular Disorders,Temporomandibular Joint Diseases,Disease, TMJ,Disease, Temporomandibular Joint,Diseases, TMJ,Diseases, Temporomandibular Joint,Disorder, TMJ,Disorder, Temporomandibular,Disorder, Temporomandibular Joint,Disorders, TMJ,Disorders, Temporomandibular,Disorders, Temporomandibular Joint,Joint Disease, Temporomandibular,Joint Diseases, Temporomandibular,Joint Disorder, Temporomandibular,Joint Disorders, Temporomandibular,TMJ Disease,TMJ Disorder,Temporomandibular Disorder,Temporomandibular Joint Disease,Temporomandibular Joint Disorder
D014025 Titanium A dark-gray, metallic element of widespread distribution but occurring in small amounts with atomic number, 22, atomic weight, 47.867 and symbol, Ti; specific gravity, 4.5; used for fixation of fractures.
D019643 Arthroplasty, Replacement Partial or total replacement of a skeletal joint. Joint Prosthesis Implantation,Arthroplasties, Replacement,Joint Replacement,Replacement Arthroplasties,Replacement Arthroplasty,Total Joint Replacement,Implantation, Joint Prosthesis,Implantations, Joint Prosthesis,Joint Prosthesis Implantations,Joint Replacement, Total,Joint Replacements,Joint Replacements, Total,Prosthesis Implantation, Joint,Prosthesis Implantations, Joint,Replacement, Joint,Replacement, Total Joint,Replacements, Joint,Replacements, Total Joint,Total Joint Replacements

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