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Stability of Class II treatment with the Bionator followed by fixed appliances

OBJECTIVE: This prospective study assessed the stability of Class II treatment with the Bionator, followed by fixed appliances, 10 years after treatment. MATERIAL AND METHODS: The experimental group comprised 23 patients of both sexes (10 boys, 13 girls) at a mean initial age of 11.74 years (late mi...

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Autores principales: FRANCISCONI, Manoela Fávaro, HENRIQUES, José Fernando Castanha, JANSON, Guilherme, de FREITAS, Karina Maria Salvatore, dos SANTOS, Patrícia Bittencourt Dutra
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Faculdade de Odontologia de Bauru da Universidade de São Paulo 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3891279/
https://www.ncbi.nlm.nih.gov/pubmed/24473721
http://dx.doi.org/10.1590/1679-775720130002
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author FRANCISCONI, Manoela Fávaro
HENRIQUES, José Fernando Castanha
JANSON, Guilherme
de FREITAS, Karina Maria Salvatore
dos SANTOS, Patrícia Bittencourt Dutra
author_facet FRANCISCONI, Manoela Fávaro
HENRIQUES, José Fernando Castanha
JANSON, Guilherme
de FREITAS, Karina Maria Salvatore
dos SANTOS, Patrícia Bittencourt Dutra
author_sort FRANCISCONI, Manoela Fávaro
collection PubMed
description OBJECTIVE: This prospective study assessed the stability of Class II treatment with the Bionator, followed by fixed appliances, 10 years after treatment. MATERIAL AND METHODS: The experimental group comprised 23 patients of both sexes (10 boys, 13 girls) at a mean initial age of 11.74 years (late mixed or early permanent dentitions), treated for a mean period of 3.55 years who were evaluated at three stages: initial (T1), final (T2) and long-term posttreatment (T3). A total of 69 lateral cephalograms were evaluated and 69 dental casts were measured using the PAR index. The difference between initial and final PAR indexes, the percentage of occlusal improvement obtained with therapy and the percentage of relapse were calculated, using the PAR index. The variables were compared by repeated measures analysis of variance (ANOVA) followed by Tukey tests. RESULTS: The significant improvement in apical base relationship, the palatal inclination of the maxillary incisors and the labial inclination of the mandibular incisors, and the significant improvement in molar relationship and reduction of overjet and overbite, obtained with treatment, remained stable in the long-term posttreatment period. There was also significant improvement in the occlusal relationships which remained stable in the long-term posttreatment period. The percentage of occlusal improvement obtained was of 81.78% and the percentage of relapse was of 4.90%. CONCLUSIONS: Treatment of Class II division 1 malocclusions with the Bionator associated with fixed appliances showed to be stable in the long-term posttreatment period.
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spelling pubmed-38912792014-01-15 Stability of Class II treatment with the Bionator followed by fixed appliances FRANCISCONI, Manoela Fávaro HENRIQUES, José Fernando Castanha JANSON, Guilherme de FREITAS, Karina Maria Salvatore dos SANTOS, Patrícia Bittencourt Dutra J Appl Oral Sci Original Articles OBJECTIVE: This prospective study assessed the stability of Class II treatment with the Bionator, followed by fixed appliances, 10 years after treatment. MATERIAL AND METHODS: The experimental group comprised 23 patients of both sexes (10 boys, 13 girls) at a mean initial age of 11.74 years (late mixed or early permanent dentitions), treated for a mean period of 3.55 years who were evaluated at three stages: initial (T1), final (T2) and long-term posttreatment (T3). A total of 69 lateral cephalograms were evaluated and 69 dental casts were measured using the PAR index. The difference between initial and final PAR indexes, the percentage of occlusal improvement obtained with therapy and the percentage of relapse were calculated, using the PAR index. The variables were compared by repeated measures analysis of variance (ANOVA) followed by Tukey tests. RESULTS: The significant improvement in apical base relationship, the palatal inclination of the maxillary incisors and the labial inclination of the mandibular incisors, and the significant improvement in molar relationship and reduction of overjet and overbite, obtained with treatment, remained stable in the long-term posttreatment period. There was also significant improvement in the occlusal relationships which remained stable in the long-term posttreatment period. The percentage of occlusal improvement obtained was of 81.78% and the percentage of relapse was of 4.90%. CONCLUSIONS: Treatment of Class II division 1 malocclusions with the Bionator associated with fixed appliances showed to be stable in the long-term posttreatment period. Faculdade de Odontologia de Bauru da Universidade de São Paulo 2013 /pmc/articles/PMC3891279/ /pubmed/24473721 http://dx.doi.org/10.1590/1679-775720130002 Text en http://creativecommons.org/licenses/by-nc/3.0/ 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 Articles
FRANCISCONI, Manoela Fávaro
HENRIQUES, José Fernando Castanha
JANSON, Guilherme
de FREITAS, Karina Maria Salvatore
dos SANTOS, Patrícia Bittencourt Dutra
Stability of Class II treatment with the Bionator followed by fixed appliances
title Stability of Class II treatment with the Bionator followed by fixed appliances
title_full Stability of Class II treatment with the Bionator followed by fixed appliances
title_fullStr Stability of Class II treatment with the Bionator followed by fixed appliances
title_full_unstemmed Stability of Class II treatment with the Bionator followed by fixed appliances
title_short Stability of Class II treatment with the Bionator followed by fixed appliances
title_sort stability of class ii treatment with the bionator followed by fixed appliances
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3891279/
https://www.ncbi.nlm.nih.gov/pubmed/24473721
http://dx.doi.org/10.1590/1679-775720130002
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