Estudo comparativo da eminectomia e do uso de miniplaca na eminência articular para tratamento da luxação recidivante da articulação temporomandibular

Abstract

Di slocation of the temporomandibular joint occurs when the mandibular condyle exits the glenoidal cavity and remains anteriorly locked to the articular eminence. It is repetitive (recurrent dislocation), usually associated with mandibular hypermobility and inclination of the articular eminence. Aim: This study intended to clinically and radiologically assess the technique of eminectomy and the use of a miniplate on the articular eminence for the treatment of recurrent dislocation of the temporomandibular joint of patients operated on at Oswaldo Cruz University Hospital from January to September 2003. Study Design: Retrospective cohort. Material and Method: The sample consisted of 11 patients. Eminectomy was performed on nine joints of five patients and the placement of a miniplate on the articular eminence was performed on 11 joints of six patients. Data collection was carried out through analysis of patient's medical charts and new postoperative visit. Results: The results showed that there were no major postoperative complications with either technique. Maximum mouth opening was greater with eminectomy procedure and none of the patients operated on presented any recurrence of dislocation. Conclusion: It is concluded that both techniques were effective in the treatment of recurrent dislocation of the temporomandibular joint.

Treatment of chronic mandibular dislocations using miniplates: follow-up of 8 cases and literature review

“…Other modes of treatment aim to restrict movement of the condyle, for example by injecting sclerosing substances or inducing fibrosis in the tissues adjacent to the joint 11,17 . Another approach is to remove the mechanical obstacles in the condylar path; an example is eminectomy, which was introduced by Myrhaug in 1951, 3,18 and has been used with satisfactory results and efficacy 7,13,15 .…”

“…Temporomandibular joint (TMJ) dislocation is defined as an excessive forward movement of the condyle beyond the articular eminence with complete separation of the articular surfaces and fixation in that position 3,6 . It is commonly associated with poor development of the articular fossa, laxity of the temporomandibular ligament or joint capsule and excessive activity of the lateral pterygoid and infrahyoid muscles due to drug use or disease 3,6,16 .…”

“…It is commonly associated with poor development of the articular fossa, laxity of the temporomandibular ligament or joint capsule and excessive activity of the lateral pterygoid and infrahyoid muscles due to drug use or disease 3,6,16 .…”