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Morphologic evaluation of root resorption after miniscrew assisted en mass retraction in adult bialveolar protrusion patients
BACKGROUND: Bialveolar protrusion is one of the most common chief complaints from the Asian orthodontic patients. Typical orthodontic treatment includes extraction of the bimaxillary premolars and en mass retraction of anterior tooth with maximum anchorage by placing miniscrews. However, excessive p...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7384215/ https://www.ncbi.nlm.nih.gov/pubmed/32713348 http://dx.doi.org/10.1186/s13005-020-00229-z |
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author | Chen, Yu Liu, Dongxu |
author_facet | Chen, Yu Liu, Dongxu |
author_sort | Chen, Yu |
collection | PubMed |
description | BACKGROUND: Bialveolar protrusion is one of the most common chief complaints from the Asian orthodontic patients. Typical orthodontic treatment includes extraction of the bimaxillary premolars and en mass retraction of anterior tooth with maximum anchorage by placing miniscrews. However, excessive pursuit of profile improvement by retraction and intrusion of anterior teeth may result in root resorption, alveolar bone loss, even dehiscence. Thus this retrospective, analytical study was to evaluate the root resorption of anterior teeth after miniscrew assisted en mass retraction in adult bialveolar protrusion patients. MATERIALS AND METHODS: Thirty six adult patients with bimaxillary protrusion had four first premolars extracted, and then miniscrews were placed to provide anchorage. CBCT scans were performed before (T1) and posttreatment (T2). A new improvement project introduced for 3D CBCT registration assessment of root morphology. The paired t-test was used to compare changes from T1 to T2. The relationship between the root resorption and the movement of anterior teeth were assessed by Pearson correlation coefficient analysis. RESULTS: The significant differences were only found in apical third of root and the largest resorption in apical third of the root is always noted in the palatal and distal sectors. Significant correlations were observed in the loss of root in distal and palatal sectors, the root length and volume decrease with the amount of anterior teeth retraction and intrusion. CONCLUSION: The new 3D registration assessment of root morphology will be helpful for the clinicians. Pursuit of large retraction and intrusion leads to obvious anterior teeth root resorption. |
format | Online Article Text |
id | pubmed-7384215 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-73842152020-07-28 Morphologic evaluation of root resorption after miniscrew assisted en mass retraction in adult bialveolar protrusion patients Chen, Yu Liu, Dongxu Head Face Med Research BACKGROUND: Bialveolar protrusion is one of the most common chief complaints from the Asian orthodontic patients. Typical orthodontic treatment includes extraction of the bimaxillary premolars and en mass retraction of anterior tooth with maximum anchorage by placing miniscrews. However, excessive pursuit of profile improvement by retraction and intrusion of anterior teeth may result in root resorption, alveolar bone loss, even dehiscence. Thus this retrospective, analytical study was to evaluate the root resorption of anterior teeth after miniscrew assisted en mass retraction in adult bialveolar protrusion patients. MATERIALS AND METHODS: Thirty six adult patients with bimaxillary protrusion had four first premolars extracted, and then miniscrews were placed to provide anchorage. CBCT scans were performed before (T1) and posttreatment (T2). A new improvement project introduced for 3D CBCT registration assessment of root morphology. The paired t-test was used to compare changes from T1 to T2. The relationship between the root resorption and the movement of anterior teeth were assessed by Pearson correlation coefficient analysis. RESULTS: The significant differences were only found in apical third of root and the largest resorption in apical third of the root is always noted in the palatal and distal sectors. Significant correlations were observed in the loss of root in distal and palatal sectors, the root length and volume decrease with the amount of anterior teeth retraction and intrusion. CONCLUSION: The new 3D registration assessment of root morphology will be helpful for the clinicians. Pursuit of large retraction and intrusion leads to obvious anterior teeth root resorption. BioMed Central 2020-07-27 /pmc/articles/PMC7384215/ /pubmed/32713348 http://dx.doi.org/10.1186/s13005-020-00229-z Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research Chen, Yu Liu, Dongxu Morphologic evaluation of root resorption after miniscrew assisted en mass retraction in adult bialveolar protrusion patients |
title | Morphologic evaluation of root resorption after miniscrew assisted en mass retraction in adult bialveolar protrusion patients |
title_full | Morphologic evaluation of root resorption after miniscrew assisted en mass retraction in adult bialveolar protrusion patients |
title_fullStr | Morphologic evaluation of root resorption after miniscrew assisted en mass retraction in adult bialveolar protrusion patients |
title_full_unstemmed | Morphologic evaluation of root resorption after miniscrew assisted en mass retraction in adult bialveolar protrusion patients |
title_short | Morphologic evaluation of root resorption after miniscrew assisted en mass retraction in adult bialveolar protrusion patients |
title_sort | morphologic evaluation of root resorption after miniscrew assisted en mass retraction in adult bialveolar protrusion patients |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7384215/ https://www.ncbi.nlm.nih.gov/pubmed/32713348 http://dx.doi.org/10.1186/s13005-020-00229-z |
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