| Texto completo | |
| Autor(es): |
Kumagai, Rose Y.
;
Hirata, Ronaldo
;
Pereira, Patricia N. R.
;
Reis, Andre F.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Esthetic and Restorative Dentistry; v. 32, n. 3, p. 8-pg., 2019-10-17. |
| Resumo | |
Objective To evaluate the influence of the degree of dentin moisture on interfacial ultramorphology and bond strength (mu TBS) of universal adhesives. Materials and Methods Futurabond U (FBU), Scotchbond Universal (SBU), Adhese Universal (ADU), and Prime&Bond active (PBA) were used. After acid-etching, moist or over-dried dentin surfaces were tested. Teeth were restored for scanning and transmission electron microscopy (n = 3) and mu TBS evaluation (n = 5). mu TBS results were analyzed by two-way ANOVA and Tukey. Results For moist dentin, a well-formed hybrid layer (HL) was observed. However, when applied to over-dried dentin, remarkable differences were observed. Defects, gaps, and reduced HL thickness were observed mainly for ADU and FBU. When applied to wet dentin, mu TBS values were similar for all adhesives, except for FBU, which was significantly lower. When applied to over-dried dentin, PBA presented the highest mu TBS values, followed by SBU, ADU, and FBU. ADU presented significantly lower mu TBS when applied to over-dried dentin. Conclusion PBA, SBU, and FBU mu TBS values were not sensitive to the degree of moisture. Even though application to over-dried dentin revealed defects, gaps and reduced HL thickness for SBU, ADU, and FBU, mu TBS analysis only revealed a significant reduction for ADU. Clinical Significance Universal adhesives can be applied in either self-etching or etch-and-rinse mode. However, clinicians are not aware which universal adhesives should be strictly applied on a moist dentin for bonding in the etch-and-rinse mode. (AU) | |
| Processo FAPESP: | 07/06083-4 - Análise da resistência de união, nanoinfiltração e características ultramorfológicas das interfaces de união resina-dentina produzidas por cimentos auto-adesivos ao longo do tempo |
| Beneficiário: | André Figueiredo Reis |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 14/23401-3 - Desenvolvimento de blendas monoméricas contendo metacrilatos com comportamento elastomérico em associação com sistemas de fotoiniciação alternativos para aplicação em materiais odontológicos |
| Beneficiário: | André Figueiredo Reis |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 09/16261-2 - Efeito da pressão pulpar interna na resistência de união e nanoinfiltração das interfaces de união resina-dentina produzidas por cimentos auto-adesivos ao longo do tempo: um estudo in vitro |
| Beneficiário: | André Figueiredo Reis |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |