CO2 laser irradiation for debonding ceramic orthodontic brackets

Detalhes bibliográficos
Autor(a) principal: Matos,Denise Souza
Data de Publicação: 2021
Outros Autores: Küchler,Erika Calvano, Borsatto,Maria Cristina, Matsumoto,Mirian Aiko Nakane, Marques,Fernanda Vicioni, Romano,Fábio Lourenço
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Dental Journal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402021000200045
Resumo: Abstract This study evaluated shear bond strength (SBS), adhesive remnant index (ARI) and fracture mode of chemically and mechanically retained ceramic brackets bonded with different composite resins and irradiated with CO2 laser. The null hypothesis was that ceramic brackets bonded with different composite resins and irradiated with CO2 laser would have similar SBS values. Ninety human premolars were divided into four experimental groups according to the combination of type of composite resin (Transbond XT and Z 250) and type of ceramic bracket (Fascination and Mystique), and two control groups (n=15). In the four experimental groups, the brackets were irradiated with CO2 laser at 10 W for 3 seconds before SBS testing. Enamel surface ARI was calculated after debonding under electron microscopy scanning. ANOVA and the Mann-Whitney test were used for statistical analysis. The laser groups had lower SBS values than the non-irradiated groups (control) (p<0.05). The mechanically retained brackets (Mystique) had the higher (p<0.05) and Z250 had the lower SBS values after CO2 laser irradiation. The groups bonded with Z250 had the highest ARI. Adhesive fractures were the most prevalent. The null hypothesis was rejected. CO2 laser decreased SBS efficiently and facilitated debonding of mechanically and chemically retained ceramic brackets.
id FUNORP-1_26fa1d1b1ad2fc36a7bbd7cb6e3896b8
oai_identifier_str oai:scielo:S0103-64402021000200045
network_acronym_str FUNORP-1
network_name_str Brazilian Dental Journal
repository_id_str
spelling CO2 laser irradiation for debonding ceramic orthodontic bracketsorthodonticceramic bracketsCO2 lasershear bond strengthAbstract This study evaluated shear bond strength (SBS), adhesive remnant index (ARI) and fracture mode of chemically and mechanically retained ceramic brackets bonded with different composite resins and irradiated with CO2 laser. The null hypothesis was that ceramic brackets bonded with different composite resins and irradiated with CO2 laser would have similar SBS values. Ninety human premolars were divided into four experimental groups according to the combination of type of composite resin (Transbond XT and Z 250) and type of ceramic bracket (Fascination and Mystique), and two control groups (n=15). In the four experimental groups, the brackets were irradiated with CO2 laser at 10 W for 3 seconds before SBS testing. Enamel surface ARI was calculated after debonding under electron microscopy scanning. ANOVA and the Mann-Whitney test were used for statistical analysis. The laser groups had lower SBS values than the non-irradiated groups (control) (p<0.05). The mechanically retained brackets (Mystique) had the higher (p<0.05) and Z250 had the lower SBS values after CO2 laser irradiation. The groups bonded with Z250 had the highest ARI. Adhesive fractures were the most prevalent. The null hypothesis was rejected. CO2 laser decreased SBS efficiently and facilitated debonding of mechanically and chemically retained ceramic brackets.Fundação Odontológica de Ribeirão Preto2021-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402021000200045Brazilian Dental Journal v.32 n.2 2021reponame:Brazilian Dental Journalinstname:Fundação Odontológica de Ribeirão Preto (FUNORP)instacron:FUNORP10.1590/0103-6440202104077info:eu-repo/semantics/openAccessMatos,Denise SouzaKüchler,Erika CalvanoBorsatto,Maria CristinaMatsumoto,Mirian Aiko NakaneMarques,Fernanda VicioniRomano,Fábio Lourençoeng2021-09-29T00:00:00Zoai:scielo:S0103-64402021000200045Revistahttps://www.scielo.br/j/bdj/https://old.scielo.br/oai/scielo-oai.phpbdj@forp.usp.br||sergio@fosjc.unesp.br1806-47600103-6440opendoar:2021-09-29T00:00Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)false
dc.title.none.fl_str_mv CO2 laser irradiation for debonding ceramic orthodontic brackets
title CO2 laser irradiation for debonding ceramic orthodontic brackets
spellingShingle CO2 laser irradiation for debonding ceramic orthodontic brackets
Matos,Denise Souza
orthodontic
ceramic brackets
CO2 laser
shear bond strength
title_short CO2 laser irradiation for debonding ceramic orthodontic brackets
title_full CO2 laser irradiation for debonding ceramic orthodontic brackets
title_fullStr CO2 laser irradiation for debonding ceramic orthodontic brackets
title_full_unstemmed CO2 laser irradiation for debonding ceramic orthodontic brackets
title_sort CO2 laser irradiation for debonding ceramic orthodontic brackets
author Matos,Denise Souza
author_facet Matos,Denise Souza
Küchler,Erika Calvano
Borsatto,Maria Cristina
Matsumoto,Mirian Aiko Nakane
Marques,Fernanda Vicioni
Romano,Fábio Lourenço
author_role author
author2 Küchler,Erika Calvano
Borsatto,Maria Cristina
Matsumoto,Mirian Aiko Nakane
Marques,Fernanda Vicioni
Romano,Fábio Lourenço
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Matos,Denise Souza
Küchler,Erika Calvano
Borsatto,Maria Cristina
Matsumoto,Mirian Aiko Nakane
Marques,Fernanda Vicioni
Romano,Fábio Lourenço
dc.subject.por.fl_str_mv orthodontic
ceramic brackets
CO2 laser
shear bond strength
topic orthodontic
ceramic brackets
CO2 laser
shear bond strength
description Abstract This study evaluated shear bond strength (SBS), adhesive remnant index (ARI) and fracture mode of chemically and mechanically retained ceramic brackets bonded with different composite resins and irradiated with CO2 laser. The null hypothesis was that ceramic brackets bonded with different composite resins and irradiated with CO2 laser would have similar SBS values. Ninety human premolars were divided into four experimental groups according to the combination of type of composite resin (Transbond XT and Z 250) and type of ceramic bracket (Fascination and Mystique), and two control groups (n=15). In the four experimental groups, the brackets were irradiated with CO2 laser at 10 W for 3 seconds before SBS testing. Enamel surface ARI was calculated after debonding under electron microscopy scanning. ANOVA and the Mann-Whitney test were used for statistical analysis. The laser groups had lower SBS values than the non-irradiated groups (control) (p<0.05). The mechanically retained brackets (Mystique) had the higher (p<0.05) and Z250 had the lower SBS values after CO2 laser irradiation. The groups bonded with Z250 had the highest ARI. Adhesive fractures were the most prevalent. The null hypothesis was rejected. CO2 laser decreased SBS efficiently and facilitated debonding of mechanically and chemically retained ceramic brackets.
publishDate 2021
dc.date.none.fl_str_mv 2021-04-01
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=S0103-64402021000200045
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402021000200045
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0103-6440202104077
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 Fundação Odontológica de Ribeirão Preto
publisher.none.fl_str_mv Fundação Odontológica de Ribeirão Preto
dc.source.none.fl_str_mv Brazilian Dental Journal v.32 n.2 2021
reponame:Brazilian Dental Journal
instname:Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron:FUNORP
instname_str Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron_str FUNORP
institution FUNORP
reponame_str Brazilian Dental Journal
collection Brazilian Dental Journal
repository.name.fl_str_mv Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)
repository.mail.fl_str_mv bdj@forp.usp.br||sergio@fosjc.unesp.br
_version_ 1754204096227704832