The aim of this study was to evaluate the rhombic three-dimensional plate in fixation of displaced low subcondylar mandibular fractures clinically and radiographically. MATERIALS AND METHODS: This is a prospective, interventional, single armed case series study that was carried out on twelve patients with displaced low subcondylar mandibular fracture. Open reduction and internal fixation was utilized to treat those fractures using rhombic 3D plate, patients were collected from the department of Oral and Maxillofacial surgery, Faculty of Dentistry, Tanta University. All cases were treated with retromandibular approach. Post-operative evaluation: all patients underwent regular follow up for six months. The following parameters were evaluated: a. Maximal mouth opening, b. Lateral and protrusive mandibular movements, c. Chewing and occlusion, d. Clicking and tenderness of TMJ, e. Vertical height of the ramus, f. Anteroposterior angulation of the condyle. RESULTS: 6 months after the operation, the functional parameters returned to normal, with an average mouth opening of 43.6 mm, protrusion of 9.6 mm, and laterotrusion of 10.5 mm. No clicks or tender TMJ, normal function of facial nerve. Radiographic controls showed good fracture alignment, no plate fracture, bending or loose screws were observed. CONCLUSIONS: The clinical and radiographical data suggested that the rhombic three-dimensional plate is suitable for treatment of condylar fractures and provided stable fixation.
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