Efeito em longo prazo da aplicação de etanol na resistência adesiva de pinos de fibra de vidro cimentados à dentina radicular

Autores

  • Dimorvan Bordin University of Campinas
  • Yuri Wanderley Cavalcanti University of Campinas
  • Ana Paula Farina University of Passo Fundo
  • Bruno Carlini-Júnior University of Passo Fundo
  • Doglas Cecchin University of Passo Fundo

DOI:

https://doi.org/10.15448/1980-6523.2014.2.12666

Palavras-chave:

Cimentação, técnica para retentor intra-radicular, pinos dentários, etanol

Resumo

Objetivo: Avaliar o efeito em longo prazo da aplicação de etanol (EtOH) na resistência adesiva de sistemas adesivos utilizados na cimentação de pinos à dentina radicular.
Métodos: Raízes bovinas (n=40) tiveram o canal radicular preparado para receber pino, sendo realizado o condicionamento com ácido fosfórico 37% (15 s). Os espécimes foram distribuídos de acordo o sistema adesivo e aplicação de EtOH. Grupos controles receberam apenas aplicação dos adesivos Adper ScothBond Multi-Purpose Plus (ASb), ou Adper Single Bond (SB). Grupos experimentais receberam aplicação prévia de EtOH durante 1 minuto (EtOH+ASb e EtOH+SB). Após a cimentação, os espécimes, foram armazenados por 24 h, ou 12 meses, sendo submetidos ao teste push out (n=5). Os dados foram avaliados estatisticamente por análise de variância a 3 critérios e teste Tukey (α<0,05).
Resultados: O tratamento com EtOH não influenciou os valores de resistência de união na avaliação imediata (24 h), independente do sistema adesivo empregado (p>0,05). Após 12 meses, observou-se redução estatisticamente significante da resistência adesiva (p<0,05), entretanto o grupo EtOH+SB não mostrou diferença estatística entre os tempos avaliados (p>0,05).
Conclusão: O pré-tratamento com EtOH contribui para manutenção da resistência de união em longo prazo, quando utilizado sistema adesivo a base de água e etanol.

 

Biografia do Autor

Dimorvan Bordin, University of Campinas

Departamento de Prótese e Periodontia, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas, UNICAMP.

Yuri Wanderley Cavalcanti, University of Campinas

Departamento de Prótese e Periodontia, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas, UNICAMP.

Ana Paula Farina, University of Passo Fundo

Departamento Odontologia Restauradora, Faculdade de Odontologia da Universidade de Passo Fundo, UPF.

Bruno Carlini-Júnior, University of Passo Fundo

Departamento Odontologia Restauradora, Faculdade de Odontologia da Universidade de Passo Fundo, UPF.

Doglas Cecchin, University of Passo Fundo

Departamento Odontologia Restauradora, Faculdade de Odontologia da Universidade de Passo Fundo, UPF.

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Publicado

2015-06-16

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Artigo Original