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KMID : 0360119930150030229
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Journal of the Korean Society of Maxillofacial Plastic Reconstructive Surgeons
1993 Volume.15 No. 3 p.229 ~ p.237
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Skeletal replapse after orthognathic surgery of class III skeletal open-bite
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Abstract
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This study was intended to evaluate a post-operative relapse tendency in mandibular prognathism patients with open-bite. 18 patints with or without open-bite have undergone sagittal split ramus osteotomy and were investigated radiologically with
ecephalogram.
@ES The results were as following
@EN 1. The preoperative anterior facial height, mandibular plane angle and mandibular angle were larger in open-bite patients than in nonopen-bite patients. (p>0.05).
2. There was significant correlation between surgical change of SNA, mandibular plane length and longterm relapse. (p<0.01)
3. There was relatively stable postoperative anterior facial height in open bite patients.
4. There were no significant correlation between the surgical change of mandibular plane angle, amount of mandibular setback and long-term relapse. (p>0.01)
5. This study showed that horizontal relapse was more significant than vertical relapse.
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KEYWORD
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