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Pharyngeal airway space changes and stability following an extended LeFort-I osteotomy advancement in cleft lip and palate and non-cleft lip and palate patients: A long term comparison study - 30/06/21

Doi : 10.1016/j.jormas.2021.04.014 
Umut Tekin a, Berat Serdar Akdeniz b, , Eugene E Keller c
a Department of Oral and Maxillofacial Surgery Division of Oral and Maxillofacial Surgery, Mayo Clinic College of Medicine, Rochester, MN, United States 
b Department of Orthodontics, Kirikkale University Dentistry Faculty, Kirikkale, Turkey 
c Division of Oral and Maxillofacial Surgery, Mayo Clinic, Rochester, MN, United States 

Corresponding author.
En prensa. Pruebas corregidas por el autor. Disponible en línea desde el Wednesday 30 June 2021
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Highlights

Maxillary advancement with quadrangular le fort I osteotomy increased the area and depth of pharyngeal airway space.
The procedure was equally effective in cleft lip and palate and non-cleft lip and palate patients.
The change in pharyngeal airway space was stable in the long term.
Different parts of pharyngeal airway space were affected differently from the advancement.

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Abstract

Purpose

The aim of this study was to evaluate effects of extended maxillary advancement osteotomy on pharyngeal airway space (PAS) in mid-facial deficient cleft lip and palate (CLP) patients and mid-facial deficient non-CLP patients.

Methods

Pharyngeal airway space (PAS) of 10 CLP and 10 non-CLP patients with the mean age of 19 years 10 months was measured on digitized lateral cephalograms taken shortly before maxillary advancement operation with Quadrangular Le Fort I osteotomy (QLF-I) (T0), early post-operative, (T1) and long term post-operative (T2). Two way repeated analysis of variance, independent samples t-test and correlations tests were used for statistical analysis of airway and skeletal changes.

Results

Total PAS depth and area was significantly increased after the advancement and was stable in long term post-operative period for CLP and non-CLP patients. Nasopharyngeal and velopharyngeal airway space depth and area was statistically increased at T1 and T2 for both groups. Oropharyngeal airway depth and area showed no significant statistical difference at any of the time points. The effect of QLF-I osteotomy on (PAS) was similar in both CLP and non-CLP patients.

Conclusions

Nasopharyngeal, velopharyngeal, and total pharyngeal airway space depth and area increased after maxillary advancement with the QLF-I osteotomy; this increase was stable in long term follow up. Maxillary advancement with the QLF-I technique had no significant effect on oropharyngeal airway space depth and area in both CLP and non-cleft patients.

El texto completo de este artículo está disponible en PDF.

Keywords : Quadrangular Lefort I osteotomy, Pharyngeal airway, Cleft Lip and Palate


Esquema


 This study was presented as an oral presentation in 4th International Congress of the Turkish Cleft Lip and Palate Society in 21–24 September 2017 in Turkey.
 This study was conducted during the lead author's research study visit, which was supported by The Department of Science Fellowship and Grant Programs (TÜBİTAK)-2219 International Post-Doctoral Research Fellowship Program, held in MAYO Clinic.


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