Title: 0372 - Phase One Orthodontics Effects on Oropharyngeal Volume/MCA in CLP/CLCP Children
Jonathan Gao (Presenter)
University of California San Francisco
Najla Alrejaye, University of California San Francisco
Sneha oberoi, University of California San Francisco
Objectives: Cleft lip and palate (CLP) is the most common birth defect in the United States and is known to be associated with many airway problems. There are limited studies in the literature evaluating the effect of maxillary expansion and/or protraction on oropharyngeal airway in children with non-syndromic cleft lip and palate. The aim of this study was to evaluate and compare oropharyngeal airway volume and minimal cross-sectional area (MCA) in individuals with non-syndromic CP/L using CBCT before and after Phase I orthodontic maxillary expansion with or without protraction.
Methods: A retrospective study of CBCT data of preadolescent individuals (ages, 8.7 + 2.6 years) with cleft palate with or without cleft lip (n=18) who underwent Phase I orthodontic maxillary expansion with or without protraction at University of California, San Francisco (UCSF) was conducted. A control group of 9 preadolescent individuals (ages, 8.7 + 2.6 years) with cleft palate with or without cleft lip was used for comparison. Measurements were conducted by 3DMD Vultus with cross-sectional areas calculated for each 2-mm entire length of the airway. The oropharyngeal area was defined inferiorly from vallecula and superiorly by the palatal plane. The measurement method proved reliable as the intraclass correlation coefficients between the double measurements were all over 0.9 in 5 sample groups
Results: There was a statistically significant increase in pharyngeal airway volume after phase I orthodontic treatment, however, there was no statistically significant change in minimal cross-sectional area.
Conclusions: 3D imaging using CBCT and 3dMDvultus is reliable for assessing airway volume and minimal cross-sectional area. Phase I orthodontic treatment with maxillary expansion with or without protraction may have an influence on increasing pharyngeal airway volume in non-syndromic individuals with cleft palate with or without cleft lip
This abstract is based on research that was funded entirely or partially by an outside source:
UCSF School of Dentistry Program in Craniofacial Biology
The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: NONE