Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of applied oral science (Online) |
Texto Completo: | https://www.revistas.usp.br/jaos/article/view/84006 |
Resumo: | Objective: To compare the influence of archwire material (NiTi, beta-Ti and stainless steel) and brackets design (self-ligating and conventional) on the frictional force resistance. Material and Methods: Two types of brackets (self-ligating brackets - Smartclip, 3M/Unitek - and conventional brackets - Gemini, 3M/Unitek) with three (0, 5, and 10 degrees) slot angulation attached with elastomeric ligatures (TP Orthodontics) were tested. All brackets were tested with archwire 0.019"x0.025" nickel-titanium, beta-titanium, and stainless steel (Unitek/3M). The mechanical testing was performed with a universal testing machine eMIC DL 10000 (eMIC Co, Brazil). The wires were pulled from the bracket slots at a cross-head speed of 3 mm/min until 2 mm displacement. Results: Self-ligating brackets produced significantly lower friction values compared with those of conventional brackets. Frictional force resistance values were directly proportional to the increase in the bracket/ wire angulation. With regard to conventional brackets, stainless steel wires had the lowest friction force values, followed by nickel-titanium and beta-titanium ones. With regard to self-ligating brackets, the nickel-titanium wires had the lowest friction values, significantly lower than those of other materials. Conclusion: even at different angulations, the self-ligating brackets showed significantly lower friction force values than the conventional brackets. Combined with nickel-titanium wires, the self-ligating brackets exhibit much lower friction, possibly due to the contact between nickel-titanium clips and wires of the same material. |
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oai:revistas.usp.br:article/84006 |
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USP-17 |
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Journal of applied oral science (Online) |
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Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations Objective: To compare the influence of archwire material (NiTi, beta-Ti and stainless steel) and brackets design (self-ligating and conventional) on the frictional force resistance. Material and Methods: Two types of brackets (self-ligating brackets - Smartclip, 3M/Unitek - and conventional brackets - Gemini, 3M/Unitek) with three (0, 5, and 10 degrees) slot angulation attached with elastomeric ligatures (TP Orthodontics) were tested. All brackets were tested with archwire 0.019"x0.025" nickel-titanium, beta-titanium, and stainless steel (Unitek/3M). The mechanical testing was performed with a universal testing machine eMIC DL 10000 (eMIC Co, Brazil). The wires were pulled from the bracket slots at a cross-head speed of 3 mm/min until 2 mm displacement. Results: Self-ligating brackets produced significantly lower friction values compared with those of conventional brackets. Frictional force resistance values were directly proportional to the increase in the bracket/ wire angulation. With regard to conventional brackets, stainless steel wires had the lowest friction force values, followed by nickel-titanium and beta-titanium ones. With regard to self-ligating brackets, the nickel-titanium wires had the lowest friction values, significantly lower than those of other materials. Conclusion: even at different angulations, the self-ligating brackets showed significantly lower friction force values than the conventional brackets. Combined with nickel-titanium wires, the self-ligating brackets exhibit much lower friction, possibly due to the contact between nickel-titanium clips and wires of the same material. Universidade de São Paulo. Faculdade de Odontologia de Bauru2014-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/8400610.1590/1678-775720130665Journal of Applied Oral Science; Vol. 22 No. 3 (2014); 228-234Journal of Applied Oral Science; Vol. 22 Núm. 3 (2014); 228-234Journal of Applied Oral Science; v. 22 n. 3 (2014); 228-2341678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/84006/86853Copyright (c) 2014 Journal of Applied Oral Scienceinfo:eu-repo/semantics/openAccessMONTEIRO, Maria Regina Guerra SILVA, Licinio Esmeraldo da ELIAS, Carlos Nelson VILELLA, Oswaldo de Vasconcellos 2014-08-26T23:50:42Zoai:revistas.usp.br:article/84006Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2014-08-26T23:50:42Journal of applied oral science (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations |
title |
Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations |
spellingShingle |
Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations MONTEIRO, Maria Regina Guerra |
title_short |
Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations |
title_full |
Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations |
title_fullStr |
Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations |
title_full_unstemmed |
Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations |
title_sort |
Frictional resistance of self-ligating versus conventional brackets in different bracket-archwire-angle combinations |
author |
MONTEIRO, Maria Regina Guerra |
author_facet |
MONTEIRO, Maria Regina Guerra SILVA, Licinio Esmeraldo da ELIAS, Carlos Nelson VILELLA, Oswaldo de Vasconcellos |
author_role |
author |
author2 |
SILVA, Licinio Esmeraldo da ELIAS, Carlos Nelson VILELLA, Oswaldo de Vasconcellos |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
MONTEIRO, Maria Regina Guerra SILVA, Licinio Esmeraldo da ELIAS, Carlos Nelson VILELLA, Oswaldo de Vasconcellos |
description |
Objective: To compare the influence of archwire material (NiTi, beta-Ti and stainless steel) and brackets design (self-ligating and conventional) on the frictional force resistance. Material and Methods: Two types of brackets (self-ligating brackets - Smartclip, 3M/Unitek - and conventional brackets - Gemini, 3M/Unitek) with three (0, 5, and 10 degrees) slot angulation attached with elastomeric ligatures (TP Orthodontics) were tested. All brackets were tested with archwire 0.019"x0.025" nickel-titanium, beta-titanium, and stainless steel (Unitek/3M). The mechanical testing was performed with a universal testing machine eMIC DL 10000 (eMIC Co, Brazil). The wires were pulled from the bracket slots at a cross-head speed of 3 mm/min until 2 mm displacement. Results: Self-ligating brackets produced significantly lower friction values compared with those of conventional brackets. Frictional force resistance values were directly proportional to the increase in the bracket/ wire angulation. With regard to conventional brackets, stainless steel wires had the lowest friction force values, followed by nickel-titanium and beta-titanium ones. With regard to self-ligating brackets, the nickel-titanium wires had the lowest friction values, significantly lower than those of other materials. Conclusion: even at different angulations, the self-ligating brackets showed significantly lower friction force values than the conventional brackets. Combined with nickel-titanium wires, the self-ligating brackets exhibit much lower friction, possibly due to the contact between nickel-titanium clips and wires of the same material. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/84006 10.1590/1678-775720130665 |
url |
https://www.revistas.usp.br/jaos/article/view/84006 |
identifier_str_mv |
10.1590/1678-775720130665 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/84006/86853 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2014 Journal of Applied Oral Science info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2014 Journal of Applied Oral Science |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
dc.source.none.fl_str_mv |
Journal of Applied Oral Science; Vol. 22 No. 3 (2014); 228-234 Journal of Applied Oral Science; Vol. 22 Núm. 3 (2014); 228-234 Journal of Applied Oral Science; v. 22 n. 3 (2014); 228-234 1678-7765 1678-7757 reponame:Journal of applied oral science (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Journal of applied oral science (Online) |
collection |
Journal of applied oral science (Online) |
repository.name.fl_str_mv |
Journal of applied oral science (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
||jaos@usp.br |
_version_ |
1800221678151663616 |