Tubular occlusion optimizes bonding of hydrophobic resins to dentin.
J Dent Res
; 86(6): 524-8, 2007 Jun.
Article
en En
| MEDLINE
| ID: mdl-17525351
ABSTRACT
Although hydrophobic resins may be bonded to acid-etched dentin with an ethanol wet-bonding technique, the protocol is sensitive to moisture contamination when bonding is performed in deep dentin. This study tested the hypothesis that the use of oxalate or poly(glutamic) acid-modified, diluted ceramicrete (PADC) for dentinal tubule occlusion prevents fluid contamination and improves the bonding of an experimental hydrophobic adhesive to acid-etched, ethanol-dehydrated dentin. Mid-coronal and deep acid-etched moist dentin pre-treated with oxalate or PADC was dehydrated by ethanol wet-bonding and infiltrated with the experimental three-step etch-and-rinse hydrophobic adhesive under simulated pulpal pressure. Tensile bond strengths to deep dentin without pre-treatment were severely compromised. Conversely, oxalate and PADC pre-treatments reduced dentin permeability, prevented water contamination, and improved bond strengths. Minimal nanoleakage was identified within hybrid layers created in the oxalate- and PADC-pre-treated deep dentin. The use of tubular occluding agents optimized bonding of hydrophobic resins to dentin.
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Bases de datos:
MEDLINE
Asunto principal:
Recubrimiento Dental Adhesivo
/
Resinas Compuestas
/
Dentina
Tipo de estudio:
Guideline
Límite:
Humans
Idioma:
En
Revista:
J Dent Res
Año:
2007
Tipo del documento:
Article
País de afiliación:
Brasil