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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.

Objective: The purpose of this study was to evaluate both clinically and radiographically using of two microplates in treatment of displaced pediatric mandibular fractures.Materials & methods: This study included ten children had displaced mandibular fracture with age ranged between (4e11) years were treated using two microplates and microscrews through intraoral approach. All children were examined preoperative clinically and radiographically by panoramic view and computed tomography (CT) or lower occlusal view. All children were evaluated postoperative clinically at one week, one and three months for wound healing, occlusion, infection, nerve affection and stability of fracture and radiographically by panoramic view at second postoperative day, one and three months and by quantitative CT at one and three months to evaluate the accuracy of reduction and bone healing at fracture line. Results: Clinically there were no complications in all cases overall follow up period except for two cases showing occlusal discrepancy treated with guiding elastics. Radiographic results showed that good alignment of fracture segments horizontally and vertically without displacement and significant increase in bone mineral density gain after one and three months. Conclusion: Titanium microplates provide adequate stability for fracture segments in treatment of pediatric mandibular fracture. Low profile and malleability of microplates allow adaptation to mandible easily and minimize the possibility of trauma to teeth buds.