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Longitudinal stability of rapid and slow maxillary expansion
OBJECTIVE: The aim of this retrospective study was to compare the longitudinal stability of two types of posterior crossbite correction: rapid maxillary expansion (RME) and slow maxillary expansion (SME). METHODS: Study casts of 90 adolescent patients were assessed for interdental width changes at t...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Dental Press International
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4347413/ https://www.ncbi.nlm.nih.gov/pubmed/25628082 http://dx.doi.org/10.1590/2176-9451.19.6.070-077.oar |
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author | Pinheiro, Fábio Henrique de Sá Leitão Garib, Daniela Gamba Janson, Guilherme Bombonatti, Roberto de Freitas, Marcos Roberto |
author_facet | Pinheiro, Fábio Henrique de Sá Leitão Garib, Daniela Gamba Janson, Guilherme Bombonatti, Roberto de Freitas, Marcos Roberto |
author_sort | Pinheiro, Fábio Henrique de Sá Leitão |
collection | PubMed |
description | OBJECTIVE: The aim of this retrospective study was to compare the longitudinal stability of two types of posterior crossbite correction: rapid maxillary expansion (RME) and slow maxillary expansion (SME). METHODS: Study casts of 90 adolescent patients were assessed for interdental width changes at three different periods: pretreatment (T(1)), post-treatment (T(2)) and at least, five years post-retention (T(3)). Three groups of 30 patients were established according to the treatment received to correct posterior crossbite: Group A (RME), group B (SME) and group C (control- Edgewise therapy only). After crossbite correction, all patients received fixed edgewise orthodontic appliances. Paired t-tests and one-way ANOVA were used to identify significant intra and intergroup changes, respectively (P < 0.05). RESULTS: Except for intercanine distance, all widths increased in groups A and B from T(1) to T(2). In the long-term, the amount of relapse was not different for groups A and B, except for 3-3 widths which showed greater decrease in group A. However, the percentage of clinically relapsed cases of posterior crossbite was similar for rapid and slow maxillary expansion. CONCLUSION: Rapid and slow maxillary expansion showed similar stability in the long-term. |
format | Online Article Text |
id | pubmed-4347413 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Dental Press International |
record_format | MEDLINE/PubMed |
spelling | pubmed-43474132015-03-03 Longitudinal stability of rapid and slow maxillary expansion Pinheiro, Fábio Henrique de Sá Leitão Garib, Daniela Gamba Janson, Guilherme Bombonatti, Roberto de Freitas, Marcos Roberto Dental Press J Orthod Articles OBJECTIVE: The aim of this retrospective study was to compare the longitudinal stability of two types of posterior crossbite correction: rapid maxillary expansion (RME) and slow maxillary expansion (SME). METHODS: Study casts of 90 adolescent patients were assessed for interdental width changes at three different periods: pretreatment (T(1)), post-treatment (T(2)) and at least, five years post-retention (T(3)). Three groups of 30 patients were established according to the treatment received to correct posterior crossbite: Group A (RME), group B (SME) and group C (control- Edgewise therapy only). After crossbite correction, all patients received fixed edgewise orthodontic appliances. Paired t-tests and one-way ANOVA were used to identify significant intra and intergroup changes, respectively (P < 0.05). RESULTS: Except for intercanine distance, all widths increased in groups A and B from T(1) to T(2). In the long-term, the amount of relapse was not different for groups A and B, except for 3-3 widths which showed greater decrease in group A. However, the percentage of clinically relapsed cases of posterior crossbite was similar for rapid and slow maxillary expansion. CONCLUSION: Rapid and slow maxillary expansion showed similar stability in the long-term. Dental Press International 2014 /pmc/articles/PMC4347413/ /pubmed/25628082 http://dx.doi.org/10.1590/2176-9451.19.6.070-077.oar Text en 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 | Articles Pinheiro, Fábio Henrique de Sá Leitão Garib, Daniela Gamba Janson, Guilherme Bombonatti, Roberto de Freitas, Marcos Roberto Longitudinal stability of rapid and slow maxillary expansion |
title | Longitudinal stability of rapid and slow maxillary
expansion |
title_full | Longitudinal stability of rapid and slow maxillary
expansion |
title_fullStr | Longitudinal stability of rapid and slow maxillary
expansion |
title_full_unstemmed | Longitudinal stability of rapid and slow maxillary
expansion |
title_short | Longitudinal stability of rapid and slow maxillary
expansion |
title_sort | longitudinal stability of rapid and slow maxillary
expansion |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4347413/ https://www.ncbi.nlm.nih.gov/pubmed/25628082 http://dx.doi.org/10.1590/2176-9451.19.6.070-077.oar |
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