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 (la...
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doaj-bd9ffb7d612e41128865bf80264915bc2020-11-24T22:02:29ZengUniversity of São PauloJournal of Applied Oral Science1678-77652013-12-0121654755310.1590/1679-775720130002S1678-77572013000600547Stability of Class II treatment with the Bionator followed by fixed appliancesManoela Favaro FRANCISCONIJose Fernando Castanha HENRIQUESGuilherme JANSONKarina Maria Salvatore de FREITASPatricia Bittencourt Dutra dos SANTOSObjective: 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572013000600547&lng=en&tlng=enOrthodonticsRecurrenceMalocclusionAngle Class IIFunctional orthodontic appliances |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Manoela Favaro FRANCISCONI Jose Fernando Castanha HENRIQUES Guilherme JANSON Karina Maria Salvatore de FREITAS Patricia Bittencourt Dutra dos SANTOS |
spellingShingle |
Manoela Favaro FRANCISCONI Jose Fernando Castanha HENRIQUES Guilherme JANSON Karina Maria Salvatore de FREITAS Patricia Bittencourt Dutra dos SANTOS Stability of Class II treatment with the Bionator followed by fixed appliances Journal of Applied Oral Science Orthodontics Recurrence Malocclusion Angle Class II Functional orthodontic appliances |
author_facet |
Manoela Favaro FRANCISCONI Jose Fernando Castanha HENRIQUES Guilherme JANSON Karina Maria Salvatore de FREITAS Patricia Bittencourt Dutra dos SANTOS |
author_sort |
Manoela Favaro FRANCISCONI |
title |
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_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_sort |
stability of class ii treatment with the bionator followed by fixed appliances |
publisher |
University of São Paulo |
series |
Journal of Applied Oral Science |
issn |
1678-7765 |
publishDate |
2013-12-01 |
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. |
topic |
Orthodontics Recurrence Malocclusion Angle Class II Functional orthodontic appliances |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572013000600547&lng=en&tlng=en |
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