EFFECT OF AN ADDITIONAL HYDROPHILIC VERSUS HYDROPHOBIC COAT ON THE QUALITY OF DENTINAL SEALING PROVIDED BY TWO-STEP ETCH-AND-RINSE ADHESIVES

Autor(es)

de Andrade e Silva, Safira Marques ^[1] ; de Oliveira Carrilho, Marcela Rocha ^[2] ; Marquezini Junior, Luiz ^[3] ; Pimentel Garcia, Fernanda Cristina ^[4] ; Manso, Adriana Pigozzo ^{[5, 6]} ; Alves, Marcelo Correa ^[7] ; de Carvalho, Ricardo Marins ^[8]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Dent Sch Piracicaba, Dept Restorat Dent & Dent Mat, Piracicaba, SP - Brazil

^[2] Univ Florida, Coll Dent, Dept Operat Dent, Gainesville, FL - USA

^[3] Univ Varzea Grande, Sch Dent, Dept Operat Dent, Varzea Grande, SP - Brazil

^[4] Univ Brasilia, Sch Dent, Dept Operat Dent, Brasilia, DF - Brazil

^[5] Univ Sao Paulo, Sch Dent, Dept Dent Mat, Sao Paulo - Brazil

^[6] Bisco Inc, Dept Res & Dev, Schaumburg, IL - USA

^[7] Univ Estadual Campinas, Dent Sch Piracicaba, Dept Morphol & Anat, Piracicaba, SP - Brazil

^[8] Univ Florida, Coll Med, Dept Operat Dent, Gainesville, FL - USA

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Oral Science; v. 17, n. 3, p. 184-189, MAY-JUN 2009.
• Citações Web of Science: 18

Resumo

Objective: To test the hypothesis that the quality of the dentinal sealing provided by two-step etch-and-rinse adhesives cannot be altered by the addition of an extra layer of the respective adhesive or the application of a more hydrophobic, non-solvated resin. Material and Methods: full-crown preparations were acid-etched with phosphoric acid for 15 s and bonded with Adper Single Bond (3M ESPE), Excite DSC (Ivoclar/Vivadent) or Prime \& Bond NT (Dentsply). The adhesives were used according to the manufacturers' instructions (control groups) or after application to dentin they were a) covered with an extra coat of each respective system or b) coated with a non-solvated bonding agent (Adper Scotchbond Multi-Purpose Adhesive, 3M ESPE). Fluid flow rate was measured before and after dentin surfaces were acid-etched and bonded with adhesives. Results: None of the adhesives or experimental treatments was capable to block completely the fluid transudation across the treated dentin. Application of an extra coat of the adhesive did not reduce the fluid flow rate of adhesive-bonded dentin (p > 0.05). Conversely, the application of a more hydrophobic non-solvated resin resulted in significant reductions in the fluid flow rate (p < 0.05) for all tested adhesives. Conclusions: The quality of the dentinal sealing provided by etch-and-rinse adhesives can be significantly improved by the application of a more hydrophobic, non-solvated bonding agent. (AU)

• Processo FAPESP: 03/04672-1 - Avaliação in vitro dos efeitos da aplicação de sistemas adesivos, do oxalato de potássio, ou a combinação de ambos, na permeabilidade dentinária
• Beneficiário: Safira Marques de Andrade e Silva
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 03/11721-9 - Efeito da umidade superficial do esmalte na resistencia adesiva imediata e tardia de sistemas adesivos simplificados.
• Beneficiário: Luiz Marquezini Junior
• Modalidade de apoio: Bolsas no Brasil - Doutorado