Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamel

Detalhes bibliográficos
Autor(a) principal: Neto, Vando
Data de Publicação: 2017
Outros Autores: Pinho, Monica, Henriques, Bruno Alexandre Pacheco de Castro, Silva, Filipe Samuel, Gavinha, Sandra, Sousa, Julio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/65676
Resumo: Objective: The aim of this study was to assess the influence of thermal cycling on the shear bond strength of three types of adhesives used for orthodontic brackets to human enamel.Methods: Sixty six human premolars were used in this study. Two groups of dental resin composite adhesives (ED; G) and one compomer (TP) were thermal cycled from 5 up to 55 degrees C at 4000 cycles for 45 s in an artificial saliva solution. Then, samples were assessed by shear bond tests and inspected by optical and scanning electron microscopy. The resulting enamel surfaces were then evaluated according to the adhesive remnant index (ARI).Results: One resin composite adhesive (group G) showed the highest shear bond strength values. Thermal cycling negatively affected the bond strength of the compomer-based adhesive although results showed clinically acceptable adhesion values after thermal fatigue for such cycles. ARI showed significant amount of residual material on the tooth surface with the adhesives that indicated strong bonding to enamel. Different adhesion mechanisms were noticed at both adhesive-enamel or adhesive-bracket interfaces.Conclusion: The orthodontic adhesives revealed proper bond strength to enamel for clinical applications considering thermal conditions assessed in this study although the compomer-based adhesive was negatively affected by thermal cycling. The high remnant adhesive amount on enamel indicated high bond strength leading to enamel damage during debonding.
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spelling Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamelEfeito da ciclagem térmica sobre a resistência ao cisalhamento de diferentes adesivos ortodônticos ao esmalteAdesivosCompomeroResistência ao cisalhamentoBracketsCiclagem térmicaAdhesiveCompomersFatigueOrthodonticsShear strengthAdhesive CompomersFatigue OrthodonticsScience & TechnologyObjective: The aim of this study was to assess the influence of thermal cycling on the shear bond strength of three types of adhesives used for orthodontic brackets to human enamel.Methods: Sixty six human premolars were used in this study. Two groups of dental resin composite adhesives (ED; G) and one compomer (TP) were thermal cycled from 5 up to 55 degrees C at 4000 cycles for 45 s in an artificial saliva solution. Then, samples were assessed by shear bond tests and inspected by optical and scanning electron microscopy. The resulting enamel surfaces were then evaluated according to the adhesive remnant index (ARI).Results: One resin composite adhesive (group G) showed the highest shear bond strength values. Thermal cycling negatively affected the bond strength of the compomer-based adhesive although results showed clinically acceptable adhesion values after thermal fatigue for such cycles. ARI showed significant amount of residual material on the tooth surface with the adhesives that indicated strong bonding to enamel. Different adhesion mechanisms were noticed at both adhesive-enamel or adhesive-bracket interfaces.Conclusion: The orthodontic adhesives revealed proper bond strength to enamel for clinical applications considering thermal conditions assessed in this study although the compomer-based adhesive was negatively affected by thermal cycling. The high remnant adhesive amount on enamel indicated high bond strength leading to enamel damage during debonding.Objetivo: O objetivo deste estudo foi comparar três adesivos usados na adesão de brackets ao esmalte e submetidos a testes de ciclagem térmica em saliva artificial. Métodos: Foram testados dois grupos de adesivos baseados em resina composta (ED, G) e um grupo à base de um compômero (TP) após adesão de 72 brackets de aço inoxidável a pré-molares extraídos. Cada grupo foi dividido em dois subgrupos, sendo que um deles foi submetido a termociclagem em saliva artificial com variação de temperatura entre 5 e 55 °C. Amostras foram selecionadas para análise das interfaces por microscopia eletrónica de varrimento e os dez dentes restantes de cada um dos seis subgrupos foram submetidos a testes de resistência ao corte em uma máquina universal de testes. As superfícies de esmalte resultantes foram em seguida avaliadas segundo o Índice de Adesivo Remanescente (IAR). Resultados: Foram detectadas diferenças estatisticamente significativas nos valores de adesão entre os 3 adesivos (p <0,05). O adesivo do grupo G, foi o que apresentou maiores valores de resistência ao corte. A termociclagem influenciou significativamente os valores de adesão do grupo TP (p <0,5). Os grupos G e TP apresentaram valores de adesão clinicamente aceitáveis também após submetidos a fadiga térmica. O IAR mostrou diferenças significativas entre os grupos de adesivos e maior quantidade de material deixado na superfície de esmalte com os adesivos que apresentaram maiores valores de adesão. Conclusões: Um dos adesivos ortodônticos à base de resina composta apresentou adesão ao esmalte estável e aceitável para aplicações clínicas após fadiga térmica. Entretanto, a adesão do material à base de compômero diminuiu após fadiga térmica.Authors acknowledge Fundacao para Ciencia e Tecnologia (FCT) (NORTE-01-0145-FEDER-000018 - HAMaBICo) for the financial support. Also, authors a thank you to Mr. Helder Martins and to Orthosmile ltda for providing the materials tested in this study.Sociedade Portuguesa de Estomatologia e Medicina Dentária (SPEMD)Universidade do MinhoNeto, VandoPinho, MonicaHenriques, Bruno Alexandre Pacheco de CastroSilva, Filipe SamuelGavinha, SandraSousa, Julio20172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/65676eng1646-289010.24873/j.rpemd.2017.05.008https://revista.spemd.pt/article/19info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T11:59:55Zoai:repositorium.sdum.uminho.pt:1822/65676Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:49:44.573194Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamel
Efeito da ciclagem térmica sobre a resistência ao cisalhamento de diferentes adesivos ortodônticos ao esmalte
title Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamel
spellingShingle Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamel
Neto, Vando
Adesivos
Compomero
Resistência ao cisalhamento
Brackets
Ciclagem térmica
Adhesive
Compomers
Fatigue
Orthodontics
Shear strength
Adhesive Compomers
Fatigue Orthodontics
Science & Technology
title_short Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamel
title_full Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamel
title_fullStr Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamel
title_full_unstemmed Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamel
title_sort Effect of thermal cycling on the shear bond strength of different orthodontic adhesives to enamel
author Neto, Vando
author_facet Neto, Vando
Pinho, Monica
Henriques, Bruno Alexandre Pacheco de Castro
Silva, Filipe Samuel
Gavinha, Sandra
Sousa, Julio
author_role author
author2 Pinho, Monica
Henriques, Bruno Alexandre Pacheco de Castro
Silva, Filipe Samuel
Gavinha, Sandra
Sousa, Julio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Neto, Vando
Pinho, Monica
Henriques, Bruno Alexandre Pacheco de Castro
Silva, Filipe Samuel
Gavinha, Sandra
Sousa, Julio
dc.subject.por.fl_str_mv Adesivos
Compomero
Resistência ao cisalhamento
Brackets
Ciclagem térmica
Adhesive
Compomers
Fatigue
Orthodontics
Shear strength
Adhesive Compomers
Fatigue Orthodontics
Science & Technology
topic Adesivos
Compomero
Resistência ao cisalhamento
Brackets
Ciclagem térmica
Adhesive
Compomers
Fatigue
Orthodontics
Shear strength
Adhesive Compomers
Fatigue Orthodontics
Science & Technology
description Objective: The aim of this study was to assess the influence of thermal cycling on the shear bond strength of three types of adhesives used for orthodontic brackets to human enamel.Methods: Sixty six human premolars were used in this study. Two groups of dental resin composite adhesives (ED; G) and one compomer (TP) were thermal cycled from 5 up to 55 degrees C at 4000 cycles for 45 s in an artificial saliva solution. Then, samples were assessed by shear bond tests and inspected by optical and scanning electron microscopy. The resulting enamel surfaces were then evaluated according to the adhesive remnant index (ARI).Results: One resin composite adhesive (group G) showed the highest shear bond strength values. Thermal cycling negatively affected the bond strength of the compomer-based adhesive although results showed clinically acceptable adhesion values after thermal fatigue for such cycles. ARI showed significant amount of residual material on the tooth surface with the adhesives that indicated strong bonding to enamel. Different adhesion mechanisms were noticed at both adhesive-enamel or adhesive-bracket interfaces.Conclusion: The orthodontic adhesives revealed proper bond strength to enamel for clinical applications considering thermal conditions assessed in this study although the compomer-based adhesive was negatively affected by thermal cycling. The high remnant adhesive amount on enamel indicated high bond strength leading to enamel damage during debonding.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/65676
url http://hdl.handle.net/1822/65676
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1646-2890
10.24873/j.rpemd.2017.05.008
https://revista.spemd.pt/article/19
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sociedade Portuguesa de Estomatologia e Medicina Dentária (SPEMD)
publisher.none.fl_str_mv Sociedade Portuguesa de Estomatologia e Medicina Dentária (SPEMD)
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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