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The Position of the Virtual Hinge Axis in Relation to the Maxilla in Digital Orthognathic Surgery Planning—A k-Means Cluster Analysis

The aim of this study was to investigate a possible relation between skeletal phenotypes and virtual mounting data in orthognathic surgery patients. A retrospective cohort study including 323 female (26.1 ± 8.7 years) and 191 male (27.9 ± 8.3 years) orthognathic surgery patients was conducted. A k-m...

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Autores principales: Stamm, Thomas, Kanemeier, Moritz, Dirksen, Dieter, Middelberg, Claudius, Hohoff, Ariane, Kleinheinz, Johannes, Schmid, Jonas Q.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10219012/
https://www.ncbi.nlm.nih.gov/pubmed/37240688
http://dx.doi.org/10.3390/jcm12103582
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author Stamm, Thomas
Kanemeier, Moritz
Dirksen, Dieter
Middelberg, Claudius
Hohoff, Ariane
Kleinheinz, Johannes
Schmid, Jonas Q.
author_facet Stamm, Thomas
Kanemeier, Moritz
Dirksen, Dieter
Middelberg, Claudius
Hohoff, Ariane
Kleinheinz, Johannes
Schmid, Jonas Q.
author_sort Stamm, Thomas
collection PubMed
description The aim of this study was to investigate a possible relation between skeletal phenotypes and virtual mounting data in orthognathic surgery patients. A retrospective cohort study including 323 female (26.1 ± 8.7 years) and 191 male (27.9 ± 8.3 years) orthognathic surgery patients was conducted. A k-means cluster analysis was performed on the mounting parameters: the angle [Formula: see text] between the upper occlusal plane (uOP) and the axis orbital plane (AOP); the perpendicular distance (AxV) from the uOP to the hinge axis; and the horizontal length (AxH) of the uOP from upper incisor edge to AxV, with subsequent statistical analysis of related cepalometric values. Three clusters of mounting data were identified, representing three skeletal phenotypes: (1) balanced face with marginal skeletal class II or III and [Formula: see text] , AxV = 36 mm and AxH = 99 mm; (2) vertical face with skeletal class II and [Formula: see text] , AxV = 27 mm and AxH = 88 mm; (3) horizontal face with class III and [Formula: see text] , AxV = 36 mm and AxH = 86 mm. The obtained data on the position of the hinge axis can be applied to any digital planning in orthognathic surgery using CBCT or a virtual articulator, provided that the case can be clearly assigned to one of the calculated clusters.
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spelling pubmed-102190122023-05-27 The Position of the Virtual Hinge Axis in Relation to the Maxilla in Digital Orthognathic Surgery Planning—A k-Means Cluster Analysis Stamm, Thomas Kanemeier, Moritz Dirksen, Dieter Middelberg, Claudius Hohoff, Ariane Kleinheinz, Johannes Schmid, Jonas Q. J Clin Med Article The aim of this study was to investigate a possible relation between skeletal phenotypes and virtual mounting data in orthognathic surgery patients. A retrospective cohort study including 323 female (26.1 ± 8.7 years) and 191 male (27.9 ± 8.3 years) orthognathic surgery patients was conducted. A k-means cluster analysis was performed on the mounting parameters: the angle [Formula: see text] between the upper occlusal plane (uOP) and the axis orbital plane (AOP); the perpendicular distance (AxV) from the uOP to the hinge axis; and the horizontal length (AxH) of the uOP from upper incisor edge to AxV, with subsequent statistical analysis of related cepalometric values. Three clusters of mounting data were identified, representing three skeletal phenotypes: (1) balanced face with marginal skeletal class II or III and [Formula: see text] , AxV = 36 mm and AxH = 99 mm; (2) vertical face with skeletal class II and [Formula: see text] , AxV = 27 mm and AxH = 88 mm; (3) horizontal face with class III and [Formula: see text] , AxV = 36 mm and AxH = 86 mm. The obtained data on the position of the hinge axis can be applied to any digital planning in orthognathic surgery using CBCT or a virtual articulator, provided that the case can be clearly assigned to one of the calculated clusters. MDPI 2023-05-21 /pmc/articles/PMC10219012/ /pubmed/37240688 http://dx.doi.org/10.3390/jcm12103582 Text en © 2023 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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Stamm, Thomas
Kanemeier, Moritz
Dirksen, Dieter
Middelberg, Claudius
Hohoff, Ariane
Kleinheinz, Johannes
Schmid, Jonas Q.
The Position of the Virtual Hinge Axis in Relation to the Maxilla in Digital Orthognathic Surgery Planning—A k-Means Cluster Analysis
title The Position of the Virtual Hinge Axis in Relation to the Maxilla in Digital Orthognathic Surgery Planning—A k-Means Cluster Analysis
title_full The Position of the Virtual Hinge Axis in Relation to the Maxilla in Digital Orthognathic Surgery Planning—A k-Means Cluster Analysis
title_fullStr The Position of the Virtual Hinge Axis in Relation to the Maxilla in Digital Orthognathic Surgery Planning—A k-Means Cluster Analysis
title_full_unstemmed The Position of the Virtual Hinge Axis in Relation to the Maxilla in Digital Orthognathic Surgery Planning—A k-Means Cluster Analysis
title_short The Position of the Virtual Hinge Axis in Relation to the Maxilla in Digital Orthognathic Surgery Planning—A k-Means Cluster Analysis
title_sort position of the virtual hinge axis in relation to the maxilla in digital orthognathic surgery planning—a k-means cluster analysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10219012/
https://www.ncbi.nlm.nih.gov/pubmed/37240688
http://dx.doi.org/10.3390/jcm12103582
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