الفهرس 
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Abstract
The objective of this study was to evaluate clinically and radigraphically the use of locking plate system in acceleration of bone healing in mandibular fractures.
The study was based on twenty patients with anterior mandibular fracture requiring reduction and fixation, they were randomly selected from the cases received in the Emergency Room of University Hospital and treated in the operating room of the Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University.
Patients were equally divided into two groups
Group Ι (study group): The patients involved in this group were undergone open reduction and direct osteosynthesis using locking plate system.
Group Π (control group): The patients were undergone open reduction and direct osteosynthesis using mini-plates.
Surgical procedure
Lower arch bar was placed then the fracture site was exposed through intraoral incision.
Occlusion was checked the fracture was anatomically reduced and fixed with miniplates. The surgical wound was sutured.
In the study group, the locking plate system was applied to the fracture line. Through intraoral incision, then the wound was sutured.
Clinical evaluation: All patients recovered well after surgery, they showed no complications throughout the evaluation period.
In both group pain intensity decreased 6 weeks postoperatively. Edema was limited to the area of operation and resolved 6 weeks postoperatively also. Trismus was obvious preoperatively due to pain related to the fracture and the muscles of mastication, the mouth opening started to return as normal by the end of the first week postoperatively.
Radiographic evaluation: Standardized digital panoramic radiographs were taken immediately, 6 weeks and 12 weeks postoperatively to evaluate the density of the bone at the fracture line by using specific image processing program (image J).
Radiographic evaluation revealed significant increase in the bone density in the study group more than that in the control group.