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Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion

INTRODUCTION: This study assessed the three-dimensional changes in the dental arch of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusions at three different periods. METHODS: Landmarks previously identified on upper and lower dental casts were digitized on a...

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Autores principales: Peixoto, Adriano Porto, Pinto, Ary dos Santos, Garib, Daniela Gamba, Gonçalves, João Roberto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dental Press International 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4296649/
https://www.ncbi.nlm.nih.gov/pubmed/25279524
http://dx.doi.org/10.1590/2176-9451.19.4.071-079.oar
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author Peixoto, Adriano Porto
Pinto, Ary dos Santos
Garib, Daniela Gamba
Gonçalves, João Roberto
author_facet Peixoto, Adriano Porto
Pinto, Ary dos Santos
Garib, Daniela Gamba
Gonçalves, João Roberto
author_sort Peixoto, Adriano Porto
collection PubMed
description INTRODUCTION: This study assessed the three-dimensional changes in the dental arch of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusions at three different periods. METHODS: Landmarks previously identified on upper and lower dental casts were digitized on a three-dimensional digitizer MicroScribe-3DX and stored in Excel worksheets in order to assess the width, length and depth of patient's dental arches. RESULTS: During orthodontic preparation, the maxillary and mandibular transverse dimensions measured at the premolar regions were increased and maintained throughout the follow-up period. Intercanine width was increased only in the upper arch during orthodontic preparation. Maxillary arch length was reduced during orthodontic finalization, only. Upper and lower arch depths were stable in the study periods. Differences between centroid and gingival changes suggested that upper and lower arch premolars buccaly proclined during the pre-surgical period. CONCLUSIONS: Maxillary and mandibular dental arches presented transverse expansion at premolar regions during preoperative orthodontic preparation, with a tendency towards buccal tipping. The transverse dimensions were not altered after surgery. No sagittal or vertical changes were observed during the follow-up periods.
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spelling pubmed-42966492015-01-26 Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion Peixoto, Adriano Porto Pinto, Ary dos Santos Garib, Daniela Gamba Gonçalves, João Roberto Dental Press J Orthod Original Article INTRODUCTION: This study assessed the three-dimensional changes in the dental arch of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusions at three different periods. METHODS: Landmarks previously identified on upper and lower dental casts were digitized on a three-dimensional digitizer MicroScribe-3DX and stored in Excel worksheets in order to assess the width, length and depth of patient's dental arches. RESULTS: During orthodontic preparation, the maxillary and mandibular transverse dimensions measured at the premolar regions were increased and maintained throughout the follow-up period. Intercanine width was increased only in the upper arch during orthodontic preparation. Maxillary arch length was reduced during orthodontic finalization, only. Upper and lower arch depths were stable in the study periods. Differences between centroid and gingival changes suggested that upper and lower arch premolars buccaly proclined during the pre-surgical period. CONCLUSIONS: Maxillary and mandibular dental arches presented transverse expansion at premolar regions during preoperative orthodontic preparation, with a tendency towards buccal tipping. The transverse dimensions were not altered after surgery. No sagittal or vertical changes were observed during the follow-up periods. Dental Press International 2014 /pmc/articles/PMC4296649/ /pubmed/25279524 http://dx.doi.org/10.1590/2176-9451.19.4.071-079.oar Text en © 2014 Dental Press Journal of Orthodontics http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Peixoto, Adriano Porto
Pinto, Ary dos Santos
Garib, Daniela Gamba
Gonçalves, João Roberto
Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion
title Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion
title_full Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion
title_fullStr Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion
title_full_unstemmed Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion
title_short Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion
title_sort three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of class ii malocclusion
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4296649/
https://www.ncbi.nlm.nih.gov/pubmed/25279524
http://dx.doi.org/10.1590/2176-9451.19.4.071-079.oar
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