Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Dental Press Journal of Orthodontics |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512016000600091 |
Resumo: | ABSTRACT Introduction: The aim of the study was to evaluate deflection forces of rectangular orthodontic wires in conventional (MorelliTM), active (In-Ovation RTM) and passive (Damon 3MXTM) self-ligating brackets. Material and Methods: Two brands of stainless steel and nickel-titanium (NiTi) wires (MorelliTM and GACTM), in addition to OrmcoTM copper-nickel-titanium wires were used. Specimens were assembled in a clinical simulation device especially designed for this study and tested in an Instron universal testing machine. For the testing procedures, an acrylic structure representative of the maxillary right central incisor was lingually moved in activations of 0 to 1 mm, with readings of the force released by deflection in unloading of 0.5, 0.8 and 1 mm at a constant speed of 2 mm/min. Inter-bracket forces with stainless steel, NiTi and CuNiTi were individually compared by two-way ANOVA, followed by Tukey’s tests. Results: Results showed that there were lower forces in conventional brackets, followed by active and passive self-ligating brackets. Within the brands, only for NiTi wires, the MorelliTM brand presented higher forces than GACTM wires. Conclusions: Bracket systems provide different degrees of deflection force, with self-ligating brackets showing the highest forces. |
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Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating bracketsOrthodontic wiresOrthodontic bracketsComparative studyMechanical phenomenaABSTRACT Introduction: The aim of the study was to evaluate deflection forces of rectangular orthodontic wires in conventional (MorelliTM), active (In-Ovation RTM) and passive (Damon 3MXTM) self-ligating brackets. Material and Methods: Two brands of stainless steel and nickel-titanium (NiTi) wires (MorelliTM and GACTM), in addition to OrmcoTM copper-nickel-titanium wires were used. Specimens were assembled in a clinical simulation device especially designed for this study and tested in an Instron universal testing machine. For the testing procedures, an acrylic structure representative of the maxillary right central incisor was lingually moved in activations of 0 to 1 mm, with readings of the force released by deflection in unloading of 0.5, 0.8 and 1 mm at a constant speed of 2 mm/min. Inter-bracket forces with stainless steel, NiTi and CuNiTi were individually compared by two-way ANOVA, followed by Tukey’s tests. Results: Results showed that there were lower forces in conventional brackets, followed by active and passive self-ligating brackets. Within the brands, only for NiTi wires, the MorelliTM brand presented higher forces than GACTM wires. Conclusions: Bracket systems provide different degrees of deflection force, with self-ligating brackets showing the highest forces.Dental Press International2016-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512016000600091Dental Press Journal of Orthodontics v.21 n.6 2016reponame:Dental Press Journal of Orthodonticsinstname:Dental Press International (DPI)instacron:DPI10.1590/2177-6709.21.6.091-097.oarinfo:eu-repo/semantics/openAccessHiga,Rodrigo HitoshiSemenara,Nayara ThiagoHenriques,José Fernando CastanhaJanson,GuilhermeSathler,RenataFernandes,Thais Maria Freireeng2017-02-17T00:00:00Zoai:scielo:S2176-94512016000600091Revistahttp://www.scielo.br/dpjoONGhttps://old.scielo.br/oai/scielo-oai.phpartigos@dentalpress.com.br||davidnormando@hotmail.com2177-67092176-9451opendoar:2017-02-17T00:00Dental Press Journal of Orthodontics - Dental Press International (DPI)false |
dc.title.none.fl_str_mv |
Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets |
title |
Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets |
spellingShingle |
Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets Higa,Rodrigo Hitoshi Orthodontic wires Orthodontic brackets Comparative study Mechanical phenomena |
title_short |
Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets |
title_full |
Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets |
title_fullStr |
Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets |
title_full_unstemmed |
Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets |
title_sort |
Evaluation of force released by deflection of orthodontic wires in conventional and self-ligating brackets |
author |
Higa,Rodrigo Hitoshi |
author_facet |
Higa,Rodrigo Hitoshi Semenara,Nayara Thiago Henriques,José Fernando Castanha Janson,Guilherme Sathler,Renata Fernandes,Thais Maria Freire |
author_role |
author |
author2 |
Semenara,Nayara Thiago Henriques,José Fernando Castanha Janson,Guilherme Sathler,Renata Fernandes,Thais Maria Freire |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Higa,Rodrigo Hitoshi Semenara,Nayara Thiago Henriques,José Fernando Castanha Janson,Guilherme Sathler,Renata Fernandes,Thais Maria Freire |
dc.subject.por.fl_str_mv |
Orthodontic wires Orthodontic brackets Comparative study Mechanical phenomena |
topic |
Orthodontic wires Orthodontic brackets Comparative study Mechanical phenomena |
description |
ABSTRACT Introduction: The aim of the study was to evaluate deflection forces of rectangular orthodontic wires in conventional (MorelliTM), active (In-Ovation RTM) and passive (Damon 3MXTM) self-ligating brackets. Material and Methods: Two brands of stainless steel and nickel-titanium (NiTi) wires (MorelliTM and GACTM), in addition to OrmcoTM copper-nickel-titanium wires were used. Specimens were assembled in a clinical simulation device especially designed for this study and tested in an Instron universal testing machine. For the testing procedures, an acrylic structure representative of the maxillary right central incisor was lingually moved in activations of 0 to 1 mm, with readings of the force released by deflection in unloading of 0.5, 0.8 and 1 mm at a constant speed of 2 mm/min. Inter-bracket forces with stainless steel, NiTi and CuNiTi were individually compared by two-way ANOVA, followed by Tukey’s tests. Results: Results showed that there were lower forces in conventional brackets, followed by active and passive self-ligating brackets. Within the brands, only for NiTi wires, the MorelliTM brand presented higher forces than GACTM wires. Conclusions: Bracket systems provide different degrees of deflection force, with self-ligating brackets showing the highest forces. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512016000600091 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512016000600091 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2177-6709.21.6.091-097.oar |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Dental Press International |
publisher.none.fl_str_mv |
Dental Press International |
dc.source.none.fl_str_mv |
Dental Press Journal of Orthodontics v.21 n.6 2016 reponame:Dental Press Journal of Orthodontics instname:Dental Press International (DPI) instacron:DPI |
instname_str |
Dental Press International (DPI) |
instacron_str |
DPI |
institution |
DPI |
reponame_str |
Dental Press Journal of Orthodontics |
collection |
Dental Press Journal of Orthodontics |
repository.name.fl_str_mv |
Dental Press Journal of Orthodontics - Dental Press International (DPI) |
repository.mail.fl_str_mv |
artigos@dentalpress.com.br||davidnormando@hotmail.com |
_version_ |
1754122397698490368 |