Does the CO2 laser reduce bond strength in different types of ceramic brackets?

Detalhes bibliográficos
Autor(a) principal: Romano,Fábio Lourenço
Data de Publicação: 2017
Outros Autores: Pessoti,Giovanna, Galo,Rodrigo, Gomes-Silva,Jaciara Miranda, Lucisano,Marília Pacífico, Borsatto,Maria Cristina, Nelson-Filho,Paulo
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=S2176-94512017000200055
Resumo: ABSTRACT OBJECTIVE: The aim of this study was to assess in vitro the influence of the CO2 laser and of the type of ceramic bracket on the shear bond strength (SBS) to enamel. METHODS: A total of 60 enamel test surfaces were obtained from bovine incisors and randomly assigned to two groups, according to the ceramic bracket used: Allure (A); Transcend (T). Each group was divided into 2 subgroups (n = 15): L, laser (10W, 3s); C, no laser, or control. Twenty-four hours after the bonding protocol using Transbond XT, SBS was tested at a crosshead speed of 0.5 mm/min in a universal testing machine. After debonding, the Adhesive Remnant Index (ARI) was evaluated at 10 x magnification and compared among the groups. Data were analyzed by one-way ANOVA, Tukey’s, Mann-Whitney’s and Kruskal-Wallis tests (α = 0.05). RESULTS: Mean SBS in MPa were: AL = 0.88 ± 0.84; AC = 12.22 ± 3.45; TL = 12.10 ± 5.11; TC = 17.71 ± 6.16. ARI analysis showed that 73% of the specimens presented the entire adhesive remaining on the tooth surfaces (score 3). TC group presented significantly higher SBS than the other groups. The lased specimens showed significantly lower bond strength than the non-lased groups for both tested brackets. CONCLUSION: CO2 laser irradiation decreased SBS values of the polycrystalline ceramic brackets, mainly Allure.
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spelling Does the CO2 laser reduce bond strength in different types of ceramic brackets?Carbon dioxideDental debondingLasersOrthodontic bracketsShear strength.ABSTRACT OBJECTIVE: The aim of this study was to assess in vitro the influence of the CO2 laser and of the type of ceramic bracket on the shear bond strength (SBS) to enamel. METHODS: A total of 60 enamel test surfaces were obtained from bovine incisors and randomly assigned to two groups, according to the ceramic bracket used: Allure (A); Transcend (T). Each group was divided into 2 subgroups (n = 15): L, laser (10W, 3s); C, no laser, or control. Twenty-four hours after the bonding protocol using Transbond XT, SBS was tested at a crosshead speed of 0.5 mm/min in a universal testing machine. After debonding, the Adhesive Remnant Index (ARI) was evaluated at 10 x magnification and compared among the groups. Data were analyzed by one-way ANOVA, Tukey’s, Mann-Whitney’s and Kruskal-Wallis tests (α = 0.05). RESULTS: Mean SBS in MPa were: AL = 0.88 ± 0.84; AC = 12.22 ± 3.45; TL = 12.10 ± 5.11; TC = 17.71 ± 6.16. ARI analysis showed that 73% of the specimens presented the entire adhesive remaining on the tooth surfaces (score 3). TC group presented significantly higher SBS than the other groups. The lased specimens showed significantly lower bond strength than the non-lased groups for both tested brackets. CONCLUSION: CO2 laser irradiation decreased SBS values of the polycrystalline ceramic brackets, mainly Allure.Dental Press International2017-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512017000200055Dental Press Journal of Orthodontics v.22 n.2 2017reponame:Dental Press Journal of Orthodonticsinstname:Dental Press International (DPI)instacron:DPI10.1590/2177-6709.22.2.055-060.oarinfo:eu-repo/semantics/openAccessRomano,Fábio LourençoPessoti,GiovannaGalo,RodrigoGomes-Silva,Jaciara MirandaLucisano,Marília PacíficoBorsatto,Maria CristinaNelson-Filho,Pauloeng2017-06-22T00:00:00Zoai:scielo:S2176-94512017000200055Revistahttp://www.scielo.br/dpjoONGhttps://old.scielo.br/oai/scielo-oai.phpartigos@dentalpress.com.br||davidnormando@hotmail.com2177-67092176-9451opendoar:2017-06-22T00:00Dental Press Journal of Orthodontics - Dental Press International (DPI)false
dc.title.none.fl_str_mv Does the CO2 laser reduce bond strength in different types of ceramic brackets?
title Does the CO2 laser reduce bond strength in different types of ceramic brackets?
spellingShingle Does the CO2 laser reduce bond strength in different types of ceramic brackets?
Romano,Fábio Lourenço
Carbon dioxide
Dental debonding
Lasers
Orthodontic brackets
Shear strength.
title_short Does the CO2 laser reduce bond strength in different types of ceramic brackets?
title_full Does the CO2 laser reduce bond strength in different types of ceramic brackets?
title_fullStr Does the CO2 laser reduce bond strength in different types of ceramic brackets?
title_full_unstemmed Does the CO2 laser reduce bond strength in different types of ceramic brackets?
title_sort Does the CO2 laser reduce bond strength in different types of ceramic brackets?
author Romano,Fábio Lourenço
author_facet Romano,Fábio Lourenço
Pessoti,Giovanna
Galo,Rodrigo
Gomes-Silva,Jaciara Miranda
Lucisano,Marília Pacífico
Borsatto,Maria Cristina
Nelson-Filho,Paulo
author_role author
author2 Pessoti,Giovanna
Galo,Rodrigo
Gomes-Silva,Jaciara Miranda
Lucisano,Marília Pacífico
Borsatto,Maria Cristina
Nelson-Filho,Paulo
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Romano,Fábio Lourenço
Pessoti,Giovanna
Galo,Rodrigo
Gomes-Silva,Jaciara Miranda
Lucisano,Marília Pacífico
Borsatto,Maria Cristina
Nelson-Filho,Paulo
dc.subject.por.fl_str_mv Carbon dioxide
Dental debonding
Lasers
Orthodontic brackets
Shear strength.
topic Carbon dioxide
Dental debonding
Lasers
Orthodontic brackets
Shear strength.
description ABSTRACT OBJECTIVE: The aim of this study was to assess in vitro the influence of the CO2 laser and of the type of ceramic bracket on the shear bond strength (SBS) to enamel. METHODS: A total of 60 enamel test surfaces were obtained from bovine incisors and randomly assigned to two groups, according to the ceramic bracket used: Allure (A); Transcend (T). Each group was divided into 2 subgroups (n = 15): L, laser (10W, 3s); C, no laser, or control. Twenty-four hours after the bonding protocol using Transbond XT, SBS was tested at a crosshead speed of 0.5 mm/min in a universal testing machine. After debonding, the Adhesive Remnant Index (ARI) was evaluated at 10 x magnification and compared among the groups. Data were analyzed by one-way ANOVA, Tukey’s, Mann-Whitney’s and Kruskal-Wallis tests (α = 0.05). RESULTS: Mean SBS in MPa were: AL = 0.88 ± 0.84; AC = 12.22 ± 3.45; TL = 12.10 ± 5.11; TC = 17.71 ± 6.16. ARI analysis showed that 73% of the specimens presented the entire adhesive remaining on the tooth surfaces (score 3). TC group presented significantly higher SBS than the other groups. The lased specimens showed significantly lower bond strength than the non-lased groups for both tested brackets. CONCLUSION: CO2 laser irradiation decreased SBS values of the polycrystalline ceramic brackets, mainly Allure.
publishDate 2017
dc.date.none.fl_str_mv 2017-04-01
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=S2176-94512017000200055
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512017000200055
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/2177-6709.22.2.055-060.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.22 n.2 2017
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
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