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Existence of a Neutral-Impact Maxillo-Mandibular Displacement on Upper Airways Morphology
Current scientific evidence on how orthognathic surgery affects the airways morphology remains contradictory. The aim of this study is to investigate the existence and extension of a neutral-impact interval of bony segments displacement on the upper airways morphology. Its upper boundary would behav...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7999116/ https://www.ncbi.nlm.nih.gov/pubmed/33806410 http://dx.doi.org/10.3390/jpm11030177 |
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author | Badiali, Giovanni Lunari, Ottavia Bevini, Mirko Bortolani, Barbara Cercenelli, Laura Lorenzetti, Manuela Marcelli, Emanuela Bianchi, Alberto Marchetti, Claudio |
author_facet | Badiali, Giovanni Lunari, Ottavia Bevini, Mirko Bortolani, Barbara Cercenelli, Laura Lorenzetti, Manuela Marcelli, Emanuela Bianchi, Alberto Marchetti, Claudio |
author_sort | Badiali, Giovanni |
collection | PubMed |
description | Current scientific evidence on how orthognathic surgery affects the airways morphology remains contradictory. The aim of this study is to investigate the existence and extension of a neutral-impact interval of bony segments displacement on the upper airways morphology. Its upper boundary would behave as a skeletal displacement threshold differentiating minor and major jaw repositioning, with impact on the planning of the individual case. Pre- and post-operative cone beam computed tomographies (CBCTs) of 45 patients who underwent maxillo-mandibular advancement or maxillary advancement/mandibular setback were analysed by means of a semi-automated three-dimensional (3D) method; 3D models of skull and airways were produced, the latter divided into the three pharyngeal subregions. The correlation between skeletal displacement, stacked surface area and volume was investigated. The displacement threshold was identified by setting three ∆Area percentage variations. No significant difference in area and volume emerged from the comparison of the two surgical procedures with bone repositioning below the threshold (approximated to +5 mm). A threshold ranging from +4.8 to +7 mm was identified, varying in relation to the three ∆Area percentages considered. The ∆Area increased linearly above the threshold, while showing no consistency in the interval ranging from −5 mm to +5 mm. |
format | Online Article Text |
id | pubmed-7999116 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79991162021-03-28 Existence of a Neutral-Impact Maxillo-Mandibular Displacement on Upper Airways Morphology Badiali, Giovanni Lunari, Ottavia Bevini, Mirko Bortolani, Barbara Cercenelli, Laura Lorenzetti, Manuela Marcelli, Emanuela Bianchi, Alberto Marchetti, Claudio J Pers Med Article Current scientific evidence on how orthognathic surgery affects the airways morphology remains contradictory. The aim of this study is to investigate the existence and extension of a neutral-impact interval of bony segments displacement on the upper airways morphology. Its upper boundary would behave as a skeletal displacement threshold differentiating minor and major jaw repositioning, with impact on the planning of the individual case. Pre- and post-operative cone beam computed tomographies (CBCTs) of 45 patients who underwent maxillo-mandibular advancement or maxillary advancement/mandibular setback were analysed by means of a semi-automated three-dimensional (3D) method; 3D models of skull and airways were produced, the latter divided into the three pharyngeal subregions. The correlation between skeletal displacement, stacked surface area and volume was investigated. The displacement threshold was identified by setting three ∆Area percentage variations. No significant difference in area and volume emerged from the comparison of the two surgical procedures with bone repositioning below the threshold (approximated to +5 mm). A threshold ranging from +4.8 to +7 mm was identified, varying in relation to the three ∆Area percentages considered. The ∆Area increased linearly above the threshold, while showing no consistency in the interval ranging from −5 mm to +5 mm. MDPI 2021-03-04 /pmc/articles/PMC7999116/ /pubmed/33806410 http://dx.doi.org/10.3390/jpm11030177 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ). |
spellingShingle | Article Badiali, Giovanni Lunari, Ottavia Bevini, Mirko Bortolani, Barbara Cercenelli, Laura Lorenzetti, Manuela Marcelli, Emanuela Bianchi, Alberto Marchetti, Claudio Existence of a Neutral-Impact Maxillo-Mandibular Displacement on Upper Airways Morphology |
title | Existence of a Neutral-Impact Maxillo-Mandibular Displacement on Upper Airways Morphology |
title_full | Existence of a Neutral-Impact Maxillo-Mandibular Displacement on Upper Airways Morphology |
title_fullStr | Existence of a Neutral-Impact Maxillo-Mandibular Displacement on Upper Airways Morphology |
title_full_unstemmed | Existence of a Neutral-Impact Maxillo-Mandibular Displacement on Upper Airways Morphology |
title_short | Existence of a Neutral-Impact Maxillo-Mandibular Displacement on Upper Airways Morphology |
title_sort | existence of a neutral-impact maxillo-mandibular displacement on upper airways morphology |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7999116/ https://www.ncbi.nlm.nih.gov/pubmed/33806410 http://dx.doi.org/10.3390/jpm11030177 |
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