Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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=S2176-94512014000500074 |
Resumo: | OBJECTIVE: By means of a photoelastic model, this study analyzed the stress caused on conventional and self-ligating brackets with expanded arch wires. METHOD: Standard brackets were adhered to artificial teeth and a photoelastic model was prepared using the Interlandi 19/12 diagram as base. Successive activations were made with 0.014-in and 0.018-in rounded cross section Nickel-Titanium wires (NiTi) and 0.019 x 0.025-in rectangular stainless steel wires all of which made on 22/14 Interlandi diagram. The model was observed on a plane polariscope - in a dark field microscope configuration - and photographed at each exchange of wire. Then, they were replaced by self-ligating brackets and the process was repeated. Analysis was qualitative and observed stress location and pattern on both models analyzed. CONCLUSIONS: Results identified greater stress on the region of the apex of premolars in both analyzed models. Upon comparing the stress between models, a greater amount of stress was found in the model with conventional brackets in all of its wires. Therefore, the present pilot study revealed that alignment of wires in self-ligating brackets produced lower stress in periodontal tissues in expansive mechanics. |
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Dental Press Journal of Orthodontics |
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Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot studyOrthodontic bracketsDental archCorrective orthodontics OBJECTIVE: By means of a photoelastic model, this study analyzed the stress caused on conventional and self-ligating brackets with expanded arch wires. METHOD: Standard brackets were adhered to artificial teeth and a photoelastic model was prepared using the Interlandi 19/12 diagram as base. Successive activations were made with 0.014-in and 0.018-in rounded cross section Nickel-Titanium wires (NiTi) and 0.019 x 0.025-in rectangular stainless steel wires all of which made on 22/14 Interlandi diagram. The model was observed on a plane polariscope - in a dark field microscope configuration - and photographed at each exchange of wire. Then, they were replaced by self-ligating brackets and the process was repeated. Analysis was qualitative and observed stress location and pattern on both models analyzed. CONCLUSIONS: Results identified greater stress on the region of the apex of premolars in both analyzed models. Upon comparing the stress between models, a greater amount of stress was found in the model with conventional brackets in all of its wires. Therefore, the present pilot study revealed that alignment of wires in self-ligating brackets produced lower stress in periodontal tissues in expansive mechanics. Dental Press International2014-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000500074Dental Press Journal of Orthodontics v.19 n.5 2014reponame:Dental Press Journal of Orthodonticsinstname:Dental Press International (DPI)instacron:DPI10.1590/2176-9451.19.5.074-078.oarinfo:eu-repo/semantics/openAccessSobral,Guilherme CaiadoVedovello Filho,MárioDegan,Viviane VeroniSantamaria Jr,Miltoneng2015-08-24T00:00:00Zoai:scielo:S2176-94512014000500074Revistahttp://www.scielo.br/dpjoONGhttps://old.scielo.br/oai/scielo-oai.phpartigos@dentalpress.com.br||davidnormando@hotmail.com2177-67092176-9451opendoar:2015-08-24T00:00Dental Press Journal of Orthodontics - Dental Press International (DPI)false |
dc.title.none.fl_str_mv |
Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study |
title |
Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study |
spellingShingle |
Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study Sobral,Guilherme Caiado Orthodontic brackets Dental arch Corrective orthodontics |
title_short |
Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study |
title_full |
Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study |
title_fullStr |
Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study |
title_full_unstemmed |
Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study |
title_sort |
Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study |
author |
Sobral,Guilherme Caiado |
author_facet |
Sobral,Guilherme Caiado Vedovello Filho,Mário Degan,Viviane Veroni Santamaria Jr,Milton |
author_role |
author |
author2 |
Vedovello Filho,Mário Degan,Viviane Veroni Santamaria Jr,Milton |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Sobral,Guilherme Caiado Vedovello Filho,Mário Degan,Viviane Veroni Santamaria Jr,Milton |
dc.subject.por.fl_str_mv |
Orthodontic brackets Dental arch Corrective orthodontics |
topic |
Orthodontic brackets Dental arch Corrective orthodontics |
description |
OBJECTIVE: By means of a photoelastic model, this study analyzed the stress caused on conventional and self-ligating brackets with expanded arch wires. METHOD: Standard brackets were adhered to artificial teeth and a photoelastic model was prepared using the Interlandi 19/12 diagram as base. Successive activations were made with 0.014-in and 0.018-in rounded cross section Nickel-Titanium wires (NiTi) and 0.019 x 0.025-in rectangular stainless steel wires all of which made on 22/14 Interlandi diagram. The model was observed on a plane polariscope - in a dark field microscope configuration - and photographed at each exchange of wire. Then, they were replaced by self-ligating brackets and the process was repeated. Analysis was qualitative and observed stress location and pattern on both models analyzed. CONCLUSIONS: Results identified greater stress on the region of the apex of premolars in both analyzed models. Upon comparing the stress between models, a greater amount of stress was found in the model with conventional brackets in all of its wires. Therefore, the present pilot study revealed that alignment of wires in self-ligating brackets produced lower stress in periodontal tissues in expansive mechanics. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-10-01 |
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=S2176-94512014000500074 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000500074 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2176-9451.19.5.074-078.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.19 n.5 2014 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_ |
1754122397171056640 |