Efeito do modo de ativação da polimerização e envelhecimento acelerado no grau de conversão de cimentos resinosos autoadesivos

Autores

DOI:

https://doi.org/10.33448/rsd-v12i4.41239

Palavras-chave:

Cimentos resinosos; Envelhecimento; Grau de conversão.

Resumo

Restaurações adesivas indiretas estão cada vez mais fazendo parte dos procedimentos de Reabilitação Oral. Com o propósito de reduzir e minimizar as dificuldades e simplificar a técnica de cimentação com cimentos resinosos adesivos convencionais foi introduzido um cimento resinoso denominado de autoadesivo por apresentar adesão química aos tecidos dentais, superfícies cerâmicas e metálicas sem a necessidade de condicionamento ácido e emprego de sistemas adesivos. Alguns estudos apontam para a problemática da degradação dos cimentos durante a armazenagem. Os inibidores e os peróxidos presentes na composição do cimento são componentes químicos orgânicos e, assim sendo, são susceptíveis aos fenômenos de degradação sob armazenagem. Por todos esses fatores, os cimentos resinosos têm prazo de armazenagem limitado e alterações no mecanismo de polimerização podem ocorrer durante esse período. O presente estudo foi elaborado contendo algumas variáveis em investigação. Todas essas variáveis buscaram investigar as consequências de diferentes protocolos de ativação da polimerização e do envelhecimento acelerado dos cimentos resinosos autoadesivos de polimerização dual no grau de conversão dos mesmos, bem como testar a hipótese nula de que o protocolo de ativação da polimerização e o envelhecimento acelerado não causaram alteração no grau de conversão dos materiais a serem testados.

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Publicado

12/04/2023

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MASSOLA FILHO, F. F. .; ZANIBONI, J. F. .; BRIANEZZI, L. F. de F. .; SILVA, M. V. M. da .; CAMPOS, E. A. de .; FRANCO, A. G. .; PEGORARO, T. A. . Efeito do modo de ativação da polimerização e envelhecimento acelerado no grau de conversão de cimentos resinosos autoadesivos. Research, Society and Development, [S. l.], v. 12, n. 4, p. e20312441239, 2023. DOI: 10.33448/rsd-v12i4.41239. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/41239. Acesso em: 18 dez. 2024.

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