Efeito da aplicação do microjateamento de óxido de alumínio e discos de óxido de alumínio na resistência adesiva de braquetes metálicos recolados em esmalte previamente erodido

Autores

DOI:

https://doi.org/10.33448/rsd-v10i13.20132

Palavras-chave:

Resistência ao cisalhamento; Ortodontia; Erosão dentária.

Resumo

O objetivo foi avaliar o efeito da aplicação do microjateamento de óxido de alumínio e de discos de óxido de alumínio na resistência adesiva de braquetes metálicos recolados em esmalte erodido artificialmente. 54 coroas de incisivos bovinos foram divididas em função dos grupos: Controle (Saliva Artificial), Ox Al (Microjateamento com óxido de alumínio) e SL (discos de óxido de alumínio). Eles tiveram sua superfície de esmalte aplainada e a microdureza Knoop foi avaliada. Após aferição os dentes de OxAl e SL foram submetidos ao desafio erosivo, submersos em Coca-Cola® por 1 minuto, 3X ao dia, por 7 dias. Foram colados braquetes metálicos nos dentes. A força de cisalhamento foi mensurada por meio de uma máquina de teste universal EMIC (0,5mm/min). O Índice de Remanescente Adesivo (IRA) foi obtido nas amostras utilizando-se lupa (10X). Foram aplicados os testes de Kolmogorv-Smirnov, de Levene e a homocedasticidade e ANOVA para avaliação da microdureza e força de cisalhamento. Não houve diferenças estatisticamente significantes entre os grupos quando avaliadas microdureza (p=0,163). Porém, ao avaliar o IRA, houve diferença estatisticamente significativa ao comparar o grupo Controle com o OxAl e SL. Sendo a prevalência de IRA 3 para o grupo controle. Para OxAl e SL, IRA 1 e 2 prevaleceram. Concluiu-se que o uso de microjateamento de óxido de alumínio e discos de óxido de alumínio não aumentaram a resistência adesiva dos braquetes quando colados em esmalte erodido artificialmente. O índice de remanescente adesivo indicou que dentes erodidos apresentam uma maior adesão da resina ao esmalte.

Biografia do Autor

Luciana de Vasconcelos Leão, Federal University of Sergipe

MSc, Program in Dentistry, Federal University of Sergipe

Adriana Oliveira, Federal University of Sergipe

MSc student, Program in Dentistry, Federal University of Sergipe.

Jefferson Chaves Moreira, São Paulo State University

MSc student, São Paulo State University - UNESP, Institute of Science and Technology, Department of Restorative Dentistry.

Luiz Renato Paranhos, Federal University of Uberlândia

Professor, Department of Preventive and Community Dentistry, School of Dentistry, Federal University of Uberlândia

Sigmar de Mello Rode, São Paulo State University

Professor, São Paulo State University - UNESP, Institute of Science and Technology, Department of Dental Materials and Prosthodontics

Flavia Pardo Salata Nahsan, Federal University of Sergipe

Professor, Program in Dentistry, Federal University of Sergipe

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03/10/2021

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LEÃO, L. de V. .; OLIVEIRA, A.; MOREIRA, J. C. .; PARANHOS, L. R. .; RODE, S. de M. .; NAHSAN, F. P. S. . Efeito da aplicação do microjateamento de óxido de alumínio e discos de óxido de alumínio na resistência adesiva de braquetes metálicos recolados em esmalte previamente erodido. Research, Society and Development, [S. l.], v. 10, n. 13, p. e34101320132, 2021. DOI: 10.33448/rsd-v10i13.20132. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/20132. Acesso em: 22 nov. 2024.

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