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Journal of the Korean Cleft Palate-Craniofacial Association 2005;6(1):49-55.
A Clinical Analysis of the Mandible Fractures.
Sang Mo Bae, Jae Hak Jung, Young Hwan Kim, Hook Sun
Department of Plastic and Reconstructive Surgery, College of Medicine, InJe University, Busan, Korea. charismabae@daum.net
Abstract
There is a tendency that facial traumas are increasing constantly due to the growing traffic accidents and criminal violences with the industrialization of the society. Among these traumas, the frequency of the mandible fracture is the second highest next to that of the nasal bone fracture. The mandible is an evitable part which makes the temporomandibular joint movement and occlusion. The reduction of these fractures is considered important in view of the aesthetic and functional aspects of human beings. This retrospective study comprised 587 patients with mandibular fracture who had been treated in the Department of Plastic and Reconstructive Surgery from March, 1, 1997 to February, 28, 2004. The studied items are age and sex distribution, prevalent time, causes of the fracture, fracture sites, accompanied soft tissue and bone injuries, treatment methods, time interval between the accident and operation, and the complications. The following results were obtained. 1. The male and female ratio of mandibular fractures was 4.1:1. The mandibular fractures of the young men in twenties were the highest(32.7%). 2. The monthly incidence was the highest on June and the greatest numbers of incidence occurred between 9 p.m and 3 a.m.(51.2%). 3. The most common cause of mandibular fracture was the traffic accident(35%). 4. The most common fracture site was symphysis (36.6%), followed by angle(28.9%), condyle(24.2%). 5. The mandibular fractures were usually accompanied with zygoma, maxilla, orbit and nasal fractures. 6. We have done 518 operative treatments out of 587 cases. We can get perfect reduction and shorten the treating period, performing operative treatment, which is open reduction with the plate and screw. In case of subcondyle level, we utilize the external fixation. 7. The most common time interval between onset and surgical intervention was less than 10 days(66.8%). 8. The long term follow up longer than 6 months was possible in 286 patients. Malocclusion(14 cases, 4.9%), sensory disturbance of lower lip(11 cases, 3.8%), malunion or nonunion(8cases, 2.8%), and infection(8cases, 2.8%) were the complications found in these patients.
Keywords: Mandibular fractures; Clinical pattern


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