Osteogenesis by distraction in mandibular defects and skeletal stability after two years of treatment
Keywords:
distraction osteogenesis, mandibular hypoplasias, mandibular distraction relapse.Abstract
To show the results of the skeletal stability after 2 years of to be operated on fromthe first patients presenting with mandibular hypoplasias treated with osteogenic
distraction in our country. Eleven hemi-mandibles in 7 patients using mandibular
osteogenic distraction with Leibinger distraction device. Latency period was of 72
hours, mandibular distraction was applied at a rate of 1,0 mm each 12 hours and
fixation was of 8 weeks. Then, postsurgical orthodontic treatment was started.
There were significant postoperative skeletal changes. Results were assessed by
cephalometry studies before intervention, after and at 2 years of treatment. Also,
there were significant postoperative skeletal changes in SNB and ANB with p< 0,05.
The arithmetic mean of the osteodistraction achieve in branch was of 7,5 mm and
in the body it was of 8,0 mm. At 2 years there remain a mandibular bone stability
of 88,8 % qualified as good. Occlusal changes were favorable. There were not
complications involving the good course of patients treated. It was shown that the
bone distraction is an effective method for treatment of mandibular defects.
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