Abstract
The aim of this study was to evaluate the stability of pharyngeal airway space changes with the use of acoustic pharyngometry 1year after bilateral sagittal split ramus osteotomy for mandibular advancement in patients with skeletal Class II malocclusion. The sample comprised 16 patients (mean age 21.26±1.86years). Acoustic pharyngometry measurements were recorded 1week before surgery (T0), 2months after surgery (T1), and 1year after surgery (T2). Parameters were compared by means of repeated-measures analysis of variance (ANOVA). Significant increase was seen in minimum cross-sectional area 2months after surgery (P<0.001). Relapse of 12.6% was observed within 1year after surgery (P<0.001). Statistically significant increase, ie, 31.5%, was seen in mean cross-sectional area 2months after surgery (P<0.001), which relapsed by 7.9% 1year after surgery (P<0. 0.001). Significant increase in mean volume from 30.32±2.2cm3 before surgery to 38.91±2.73cm3 2months after surgery (P<0.001) was observed. Mean volume relapsed 3.9% 1year after surgery (P<0.001). Changes in pharyngeal airway space dimensions in patients subjected to isolated surgical mandibular advancement on 1year follow up showed encouraging results.
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Schedule a callMore From: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics
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