The stability of facial osteotomies. Part 5. Maxillary advancement with miniplate and screw fixation |
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Authors: | Gary R Hoffman and Frank B Moloney† |
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Institution: | Department of Maxillofacial Surgery, Princess Alexandra Hospital, Brisbane, Queensland.;Department of Maxillofacial Surgery, Royal Brisbane Hospital, Queensland. |
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Abstract: | Surgical repositioning of the dento-skeletal components of the middle-third of the face, combined with appropriate orthodontic treatment, can be used to improve function and aesthetics. However, the attainment of three-dimensional stability following corrective jaw surgery continues to be a major problem in the postsurgical period. This paper examines the short-term (six weeks postoperative) and long-term (12 months postoperative) horizontal skeletal stability of Le Fort I maxillary advancement in 15 patients. The mean horizontal advancement of the maxilla was 8.76 ± 0.99 mm. Six weeks later, a mean relapse of 0.22 ± 0.19 mm was identified. The mean relapse at long-term follow-up was 0.61 ± 0.26 mm (6.96%). These results indicate that rigid miniplate and screw fixation of Le Fort I osteotomy undertaken to correct horizontal mid-dentofacial deficiency is both statistically and surgically predictable and stable when reviewed up to twelve months after surgery. |
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Keywords: | Dentofacial deformity facial osteotomies Le Fort I osteotomy miniplate and screw fixation stability |
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