alexa Skeletal stability and relapse patterns after Le Fort I maxillary osteotomy fixed with miniplates: the unilateral cleft lip and palate deformity.


Cosmetology & Oro Facial Surgery

Author(s): Posnick JC, Dagys AP

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Abstract The outcomes of a consecutive series of 35 adults and adolescents judged to be skeletally mature (mean 18 years) who had unilateral cleft lip and palate and had undergone Le Fort I advancement fixed with miniplates were investigated. All patients had received grafts of autogenous iliac bone and were stabilized intraoperatively with four miniplates. The amount and timing of horizontal and vertical relapse, correlation between advancement and relapse, effect of a pharyngoplasty in place at the time of osteotomy, effect of performing multiple jaw procedures, and maintenance of overjet and overbite were analyzed. Tracings of preoperative and serial postoperative lateral cephalograms (taken immediately and at 6 to 8 weeks and 1 year) were analyzed to calculate horizontal and vertical maxillary change and the amount of overjet and overbite maintained. Clinical follow-up ranged from 1.5 to 4.5 years (mean 1.5 years). No significant difference was seen in horizontal or vertical surgical change or relapse between patients who had maxillary surgery alone (n = 24) and those who had operations on both jaws (n = 11), nor did outcome vary significantly for those with a pharyngoplasty in place (n = 13) at the time of their Le Fort I osteotomy (p < 0.05). The mean effective horizontal advancement achieved for the group was 6.9 mm, with 5.3 mm maintained 1 year later (mean relapse of 1.6 mm). The mean effective vertical change of the maxilla was 2.1 mm initially and 1.7 mm 1 year later (mean relapse of 0.4 mm).(ABSTRACT TRUNCATED AT 250 WORDS)
This article was published in Plast Reconstr Surg and referenced in Cosmetology & Oro Facial Surgery

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