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Efeito da Temperatura de Evaporação do Solvente na Longevidade da Adesão de Adesivos Autocondicionantes à Dentina / Effect of Solvent Evaporation Temperature on Bonding Longevity of All-In-One Adhesives to Dentin
Moura, Sandra Kiss; Costa, Carlos Eduardo Silva da; Reis, Alessandra; Klein Júnior, Celso Afonso; Berger, Sandrine Bittencourt; Guiraldo, Ricardo Danil; Loguercio, Alessandro Dourado.
  • Moura, Sandra Kiss; Postgraduate Program in Dentistry. University North of Paraná. Londrina. BR
  • Costa, Carlos Eduardo Silva da; Postgraduate Program in Dentistry. University North of Paraná. Londrina. BR
  • Reis, Alessandra; Postgraduate Program in Dentistry. State University of Ponta Grossa. Ponta Grossa. BR
  • Klein Júnior, Celso Afonso; University Luterana do Brasil. Cachoeira do Sul. BR
  • Berger, Sandrine Bittencourt; University North of Paraná. Postgraduate Program in Dentistry. Londrina. BR
  • Guiraldo, Ricardo Danil; University North of Paraná. Postgraduate Program in Dentistry. Londrina. BR
  • Loguercio, Alessandro Dourado; State University of Ponta Grossa. Postgraduate Program in Dentistry. Ponta Grossa. BR
J. health sci. (Londrina) ; 18(3): 183-187, 31/07/2016.
Article in English | LILACS | ID: biblio-831803
RESUMO
Avaliou-se a durabilidade da adesão de adesivos autocondicionantes à dentina após evaporação dos solventes com jato de ar frio e quente. Os sistemas adesivos Clearfil 3S Bond e OptiBond All-In-One foram aplicados em superfícies planas de dentina, a evaporação dos solventes feita com ar quente (60±2 o C) ou ar frio (20±2 o C), seguindo-se fotoativação (600mW/cm2 por 10 s) e restauração com compósito (3 x 2 mm). Após armazenagem em água destilada (24 horas / 37 o C), as amostras foram seccionadas para obtenção de paralelogramos de 0,8 mm2 para testar em tração (0,5mm/min) em 24 horas e 6 meses. Dois paralelogramos de cada grupo experimental foram preparados para observar a nanoinfiltração na interface com a dentina. Os valores médios da resistência adesiva (em MPa) de cada grupo foram tratados por Análise de Variância de três fatores e teste de Tukey (5%), sendo o dente a unidade experimental. Foi observada maior adesão após evaporação dos solventes com ar quente (p=0.000) no tempo de 24 horas de armazenagem (0.003). Não houve diferenças para o tipo de adesivo (p=0.343) e nem para a interação adesivo X tempo X temperatura de evaporação do solvente (p>0,05). Concluiu-se que a durabilidade da adesão foi influenciada pela temperatura de evaporação do jato de ar
ABSTRACT
To evaluate the bonding longevity of one-step self-etch adhesive systems to dentin, after solvent evaporation with warm or cold airstream. Clearfil 3S Bond and OptiBond All-In-One adhesives were applied on flat dentin surfaces, solvent evaporation was performed with a warm (60±2 o C) or cold air (20±2 o C), the surfaces were light cured (600mW/cm2 during 10 s), and blocks of compositeres min were built (3 x 2mm). After storage in distilled water (24-hour at 37 o C), the samples were sectioned into 0.8 mm2 sticks and tested in tensile (0.5 mm/min) at 24-hour and 6-month periods. Two sticks from each experimental group were prepared for nanoleakage observation of the bond interface. The mean bond strength values of experimental groups (in MPa) were subjected to a three- way Analysis of Variance and post-hoc Tukey´s test (5%), using tooth as the experimental unit. Higher bond strength was observed with warm air (p=0.000) for solvent evaporation, and 24 hour of water storage (0.003. No significant differences were observed for both the adhesive systems (p=0.343) and interactions.The bonding durability was influenced by the air temperature for solvent evaporation


Full text: Available Index: LILACS (Americas) Language: English Journal: J. health sci. (Londrina) Journal subject: Medicina / Sa£de P£blica Year: 2016 Type: Article Affiliation country: Brazil Institution/Affiliation country: Postgraduate Program in Dentistry/BR / State University of Ponta Grossa/BR / University Luterana do Brasil/BR / University North of Paraná/BR

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Full text: Available Index: LILACS (Americas) Language: English Journal: J. health sci. (Londrina) Journal subject: Medicina / Sa£de P£blica Year: 2016 Type: Article Affiliation country: Brazil Institution/Affiliation country: Postgraduate Program in Dentistry/BR / State University of Ponta Grossa/BR / University Luterana do Brasil/BR / University North of Paraná/BR