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, ethanoldehydrated dentin. Mid-coronal and deep acidetched 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 pretreatments 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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|Titolo:||Tubular occlusion optimizes bonding of hydrophobic resins to dentin.|
|Citazione:||Sadek, F.t., Pashley, D.h., Ferrari, M., & Tay, F.r. (2007). Tubular occlusion optimizes bonding of hydrophobic resins to dentin. JOURNAL OF DENTAL RESEARCH, 86, 524-528.|
|Appare nelle tipologie:||1.1 Articolo in rivista|