Anterior open bite correction by Le Fort I osteotomy with or without anterior segmentation: which is more stable?
Abstract A retrospective cohort study was conducted to analyze the relapse rate of anterior open bite (AOB) correction comparing Le Fort I osteotomy with and without anterior segmentation. The risk factors that might contribute to relapse were also assessed. Lateral cephalograms obtained at six diff...
Saved in:
Published in | International journal of oral and maxillofacial surgery Vol. 46; no. 6; pp. 766 - 773 |
---|---|
Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Denmark
Elsevier Ltd
01.06.2017
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Abstract A retrospective cohort study was conducted to analyze the relapse rate of anterior open bite (AOB) correction comparing Le Fort I osteotomy with and without anterior segmentation. The risk factors that might contribute to relapse were also assessed. Lateral cephalograms obtained at six different times were analyzed. A total of 81 patients with AOB were recruited. Thirty-five patients underwent Le Fort I osteotomy without anterior segmentation and 46 patients underwent anterior segmentation. Le Fort I osteotomy with anterior segmentation resulted in significantly more AOB relapse when compared to that without anterior segmentation at 7 weeks postoperative (15.2% vs. 0%, P = 0.016). During the early postoperative period, factors that contributed to AOB relapse in Le Fort I osteotomy with anterior segmentation were AOB closure ≥4 mm and inferior positioning of the anterior segment >2 mm. Over the long term, AOB closure ≥4 mm and intraoral vertical ramus osteotomy as the only mandibular procedure were factors identified as causing more AOB relapse in those treated by Le Fort I osteotomy with anterior segmentation. In conclusion, Le Fort I osteotomy without anterior segmentation was found to be more stable in the surgical correction of AOB in the early and late postoperative periods. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0901-5027 1399-0020 |
DOI: | 10.1016/j.ijom.2017.02.1275 |