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bioRxiv · 10.1101/557199

Effect of Maxillary Expansion and Protraction on the Oropharyngeal Airway in Individuals with Non-syndromic Cleft Palate with or without Cleft Lip

Oberoi, S.·Alrejaye, N.·Gao, J.
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Abstract

IntroductionThe aim of this study was to evaluate three dimensionally the effect of the combined maxillary expansion and protraction treatment on oropharyngeal airway in children with non-syndromic cleft palate with or without cleft lip (CP/L). MethodsCBCT data of 18 preadolescent individuals (ages, 8.4 {+/-} 1.7 years) with CP/L, who underwent Phase I orthodontic maxillary expansion with protraction, were compared before and after treatment. The average length of treatment was 24.1{+/-} 7.6 months. The airway volume and minimal cross-sectional area (MCA) were determined using 3DMD Vultus imaging software with cross-sectional areas calculated for each 2-mm over the entire length of the airway. A control group of 9 preadolescent individuals (ages, 8.7 {+/-} 2.6 years) with CP/L was used for comparison. ResultsThere was a statistically significant increase in pharyngeal airway volume after phase I orthodontic treatment in both groups, however, there was no statistically significant change in minimal cross-sectional area in neither study nor control group. ConclusionThe findings showed that maxillary expansion and protraction did not have a significant effect on increasing oropharyngeal volume and MCA in patients with CP/L.

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Oberoi, S., Alrejaye, N., Gao, J.. 2019-02-21. Effect of Maxillary Expansion and Protraction on the Oropharyngeal Airway in Individuals with Non-syndromic Cleft Palate with or without Cleft Lip. https://doi.org/10.1101/557199

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