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Type: Artigo de periódico
Title: Dentine sealing provided by smear layer/smear plugs vs. adhesive resins/resin tags
Author: Carrilho, MR
Tay, FR
Sword, J
Donnelly, AM
Agee, KA
Nishitani, Y
Sadek, FT
Carvalho, RM
Pashley, DH
Abstract: The aim of this study was to evaluate the ability of five experimental resins, which ranged from hydrophobic to hydrophilic blends, to seal acid-etched dentine saturated with water or ethanol. The experimental resins (R1, R2, R3, R4, and R5) were evaluated as neat bonding agents (100% resin) or as solutions solvated with absolute ethanol (70% resin/30% ethanol). Fluid conductance was measured at 20 cm H(2)O hydrostatic pressure after sound dentine surfaces were: (i) covered with a smear layer; (ii) acid-etched; or (iii) bonded with neat or solvated resins, which were applied to acid-etched dentine saturated with water or ethanol. In general, the fluid conductance of resin-bonded dentine was significantly higher than that of smear layer-covered dentine. However, when the most hydrophobic neat resins (R1 and R2) were applied to acid-etched dentine saturated with ethanol, the fluid conductance was as low as that produced by smear layers. The fluid conductance of resin-bonded dentine saturated with ethanol was significantly lower than for resin bonded to water-saturated dentine, except for resin R4. Application of more hydrophobic resins may provide better sealing of acid-etched dentine if the substrate is saturated with ethanol instead of with water.
Subject: dentine permeability
dentine sealing
ethanol-saturated dentine
resin permeability
smear layer
Country: EUA
Editor: Wiley-blackwell
Citation: European Journal Of Oral Sciences. Wiley-blackwell, v. 115, n. 4, n. 321, n. 329, 2007.
Rights: fechado
Identifier DOI: 10.1111/j.1600-0722.2007.00465.x
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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