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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...

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Autores principales: Pinheiro, Fábio Henrique de Sá Leitão, Garib, Daniela Gamba, Janson, Guilherme, Bombonatti, Roberto, de Freitas, Marcos Roberto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dental Press International 2014
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.
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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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