| Texto completo | |
| Autor(es): |
Ely, Caroline
[1]
;
Ottoboni, Thiago Dias
[1]
;
Kumagai, Rose Yakushijin
[1]
;
de Souza, Natalia Alves
[1]
;
Ramos, Tatiana da Silva
[2]
;
Galvao Arrais, Cesar Augusto
[3]
;
Piva, Evandro
[2]
;
Reis, Andre Figueiredo
[4]
Número total de Autores: 8
|
| Afiliação do(s) autor(es): | [1] Univ Guarulhos, Dent Res & Grad Studies Div, Dept Restorat Dent, Guarulhos, SP - Brazil
[2] Univ Fed Pelotas, Biomat Dev & Control Ctr, Pelotas, RS - Brazil
[3] State Univ Ponta Grosse, Dept Dent, Ponta Grossa, PR - Brazil
[4] Univ Florida, Dept Restorat Dent Sci, Div Operat Dent, Coll Dent, Gainseville, FL - USA
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Adhesive Dentistry; v. 21, n. 3, p. 281-286, MAY-JUN 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
Purpose: To evaluate the bond strength to dentin produced by experimental adhesives formulated with an elasto-meric methacrylate monomer (EMM) and an alternative initiator system based on a Thioxanthone derivative (QTX). Materials and Methods: A self-etching primer was used. For the bonding resin, a model adhesive (G1) was formulated containing bis-GMA/TEG-DMA/HEMA (co-monomeric blend) + CQ/EDAB (initiator system). The other groups were formulated by adding to this formulation: EMM only (G2), QTX (G3), or EMM and QTX (G4). Clearfil SE Bond was used as the commercial control group. Fifty bovine teeth (n = 5) were restored with each one of the five adhesives. After restorative procedures, half of the specimens were stored in distilled water at 37 degrees C for 24 h. The other half was fixed on a metal stub and subjected to 200,000 mechanical (50 N loading at 2 Hz frequency) and 1000 thermal cycles (5 degrees C and 55 degrees C). Afterwards, specimens were serially sectioned into beams and tested in tension until fracture. Bond strengths were statistically analyzed by two-way ANOVA and Tukey's test (alpha = 5%). Results: After 24 h, significantly higher mu TBS was observed for the formulation containing EMM and QTX (G4) when compared to Clearfil SE Bond (p < 0.05). No significant differences in mu TBS were detected among the experimental groups after 24 h (p>0.05). After thermomechanical cycling, no significant differences were observed among groups. Conclusion: The addition of EMM and QTX can be considered as possible alternative in dental adhesive formulations. (AU) | |
| 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 |