comparison between the effects of miniplat fixation and other methods of fixation of displaced subcondylar fractures on dog temporomandibular joint [radiographical and histological study]

ABSTRACT

However, management of displaced condylar fractures is still controversial as it may be managed by MMF, transosseous wiring and miniplates. The present study was performed to evaluate the histological and radiographic changes of the TMJ area after inducing displaced subcondylar fracture in dogs through preauricular approach and fixation. The animals were divided into three groups [A,B and C]. In group A the ftactured segments were reduced and MMF was applied for 7 days. In group B the fractured segments were reduced and fixed by interosseous wiring. In group C. displaced condylar process was reduced and a titanium miniplate was introduced to fix the fracture. Each group was subdivided into two subgroups according to the sacrification date [45 and 90 days after surgery]. Results indicated that the TMJ exerted variable histologic and radiographic responses in different groups at the various sacrification dates indicating the various effects of each technique on the joint and the miniplate fixation in cases of displaced subcondylar fracture gave the most favorable results. Consequently, it is the technique of choice for such cases