[Clinical observation of assisted occlusion therapy for repositioning temporomandibular joint discs].

PURPOSE: To investigate the occurrence of postoperative malocclusion of patients with temporomandibular joint disc repositioning and the necessity of postoperative orthodontic treatment. METHODS: One hundred and eight patients who received temporomandibular joint disc repositioning from 2010.10 to 2015.10 were selected in this study. The patients' occlusion was recorded preoperatively and postoperatively. All patients received functional appliance or orthodontic treatment after surgery. The occlusion and the relative position of the articular disc and condyle were evaluated at regular follow-up. RESULTS: Postoperative malocclusion occurred in all patients. The use of functional appliance for 3-6 months may decrease the proportion of malocclusion. After orthodontic treatment, all patients had a complete recovery of malocclusion and remained good articular disc and condyle relationship during long term follow-up. CONCLUSIONS: Postoperatively malocclusion may occur after temporomandibular joint disc repositioning, and the use of functional appliance and orthodontic treatment are strongly recommended to retain good articular disc and condyle relationship.

[A preliminary study of surgical treatment for disc displacement of temporomandibular joint].

PURPOSE: To preliminarily evaluate the surgical treatment results of disc displacement of temporomandibular joint(TMJ). METHODS: From October 2009 to September 2010, 9 patients (11 joints) with disc displacement of TMJ ( 8 females and 1 male, and with an average mouth opening of 21.3mm) underwent disc repositioning and fixation via arthroscopy or open anchorage surgery. All patients were clinically followed up at least 3 months, and MRI examinations were performed at regular intervals. RESULTS: All incisions healed well and there were no severe complications. The average mouth opening increased to 32.8mm and the disc position remained favorable on MRI at the latest follow-up. CONCLUSIONS: With accurate diagnosis and selection of appropriate indications, disc repositioning and fixation via arthroscopy or open anchorage surgery should be used as a treatment of choice for disc displacement of TMJ.