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Three‐dimensional pharyngeal airway changes in orthodontic patients treated with and without extractions
Author(s) -
Stefanovic N.,
El H.,
Chenin D. L.,
Glisic B.,
Palomo J. M.
Publication year - 2013
Publication title -
orthodontics and craniofacial research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 55
eISSN - 1601-6343
pISSN - 1601-6335
DOI - 10.1111/ocr.12009
Subject(s) - airway , medicine , statistical significance , dentistry , perimeter , pharynx , cone beam computed tomography , orthodontics , statistical analysis , constriction , computed tomography , surgery , mathematics , statistics , geometry
Structured Abstract Objective To evaluate and compare three‐dimensional pharyngeal airway changes in orthodontic patients treated with and without extractions. Material and Methods Pharyngeal airway was analyzed for 31 subjects (15 males, 16 females) treated with extractions of four first premolars and 31 age‐ and gender‐matched controls (15 males, 16 females) treated without extractions. The mean age of subjects was 12.97 ± 1.15 years at the beginning and 15.69 ± 1.28 years at the end of treatment. The mean age of controls was 12.86 ± 0.74 years at the beginning and 15.18 ± 0.86 years at the end of treatment. Nasopharyngeal ( NP ) and oropharyngeal ( OP ) volumes, area of maximum pharyngeal constriction ( AMPC ), and upper arch perimeter were measured on T 0 and T 1 cone beam computed tomography ( CBCT ) scans. Paired samples t ‐test was used for analyzing statistical significance of changes ( p ≤ 0.05). Results There were no statistically significant differences in the pharyngeal airway values between the extraction and non‐extraction groups at neither T 0 nor T 1. The extraction group showed a statistically significant increase for NP and OP volumes and AMPC values. Such increase was also noted in the non‐extraction group, without statistical significance for AMPC values. Conclusions The findings suggest that an extraction or non‐extraction choice for orthodontic treatment would not affect the pharyngeal airway.