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A Journal on Dentistry and Maxillofacial Surgery
Minerva Stomatologica 2017 Apr 11
Copyright © 2017 EDIZIONI MINERVA MEDICA
Orthodontic-surgical treatment and respiratory function: rhinomanometric assessment
Guido GALBIATI, Cinzia MASPERO, Lucia GIANNINI, Guia C. GUENZA, Federica ZANONI, Giampietro FARRONATO ✉
Department of Orthodontics, UOC of MaxilloFacial Surgery and Dentistry, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, Milan, Italy
BACKGROUND: Several correlations between morphological and/or positional alterations of the jaws and respiratory functional impairments have been reported. NAO (Nasal airway obstruction) represents a big deal with no clearly defined "gold standard" in measurement. Rhinomanometry was adopted by multiple Authors to evaluate whether patients with malocclusion developed respiratory functional changes after an orthodonticsurgical treatment. However there are contrasting findings in literature regarding the possibility of improving respiratory function by means of SARPE or bimaxillary repositioning of the bony bases.
METHODS: Ten patients ranging from 18 to 30 years of age scheduled for orthodonticsurgical treatment of maxillary constriction volunteered as participants for the study. Orthognatic surgery consisted in: a. surgicallyassisted rapid palatal expansion in 4 patients; b. Le Fort I down fracture combined with a bilateral sagittal split osteotomy (BSSO) in 6 patients. All patients underwent a computerized rhinomanometric test before treatment (T0) and 40 days after surgery, at the time of the intermaxillary splint removal (T1). Specifically, all 10 patients received AAR evaluations, while 6 patients received both AAR and APR evaluations.
RESULTS: Both AAR and APR tests showed a decrease in mean nasal resistance following the intervention. As regards the AAR, a difference of 0.19 Pascal/sec per cm3 was found. The difference found for APR 75 Pascal was 0.24 Pascal/sec per cm3, while for APR 150 Pascal is of 0.20 Pascal/sec per cm3.
CONCLUSIONS: This study helps to confirm respiratory benefits obtainable after mono and bimaxillary orthognathic surgery.
KEY WORDS: Orthodontic - Surgical treatment - Rhinomanometry - Respiratory function - SARPE - Bimaxillary surgery