Dentine sealing provided by smear layer/smear plugs vs. adhesive resins/resin tags.
Eur J Oral Sci
; 115(4): 321-9, 2007 Aug.
Article
em En
| MEDLINE
| ID: mdl-17697173
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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Selantes de Fossas e Fissuras
/
Resinas Acrílicas
/
Camada de Esfregaço
/
Dentina
/
Permeabilidade da Dentina
Tipo de estudo:
Clinical_trials
Limite:
Humans
Idioma:
En
Revista:
Eur J Oral Sci
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido