* The aim of this study is to compare the standard and 3D miniplates fixation in mandibular angle fractures regarding to wound dehiscence, infection, nonunion, pain, hypoesthesia, and malocclusion. and to analyze advantages and disadvantages of one method over the other. * Radiographic follow-up (in the form of posteroanterior and panoramic radiographs) will used to evaluate the patients immediately and 2 and 4 months postoperatively. Patients returned 7 days after surgery for clinical evaluation . The patients will be examined radiographically for accuracy of the reduction, screw positioning, adverse reactions in the vicinity of screw placement, and bone healing. the complications encountered will be recorded and treated. The clinical evaluations will be performed by 1 surgeon at each institution. * The patients will also evaluated clinically for infection, nonunion, pain, hypoesthesia, and malocclusion. Malocclusion will assessed based on patient complaints. Criteria for infection will based on either of the following conditions: 1) purulent discharge from an incision and 2) serosanguineous drainage and a wound culture positive for a known pathogen. All the patients will evaluated postoperatively by a single assessor. * Statically analysis : Student's t test will be used to compare 3D and Champy's miniplate fixation. A value of P ≤ 0.05 will be considered statistically significant.
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postoperative complications
Timeframe: 6 monuths