In vivo Fluid Movement through Dentin Adhesives in Endodontically Treated Teeth

• Published in: Journal of dental research Vol. 84; no. 3; pp. 223 - 227
• Main Authors: Chersoni, S., Acquaviva, G.L., Prati, C., Ferrari, M., Grandini, S., Pashley, D.H., Tay, F.R.
• Format: Journal Article
• Language: English
• Published: United States SAGE Publications 01-03-2005; SAGE PUBLICATIONS, INC
• Subjects: Acid Etching, Dental; Adult; Bisphenol A-Glycidyl Methacrylate - chemistry; Dental Pulp Cavity - metabolism; Dentin - metabolism; Dentin-Bonding Agents - chemistry; Dentinal Fluid - metabolism; Dentistry; Exudates and Transudates; Humans; Methacrylates - chemistry; Microscopy, Electron, Scanning; Middle Aged; Permeability; Post and Core Technique; Replica Techniques; Surface Properties; Tooth, Nonvital - metabolism; simplified adhesives; adhesive permeability; root canal; fluid transudation
• ISSN: 0022-0345; 1544-0591
• DOI: 10.1177/154405910508400303

Fluid transudation through simplified dentin adhesives can occur in bonded vital crown dentin, since these adhesives behave as permeable membranes after polymerization. The effect of adhesive permeability in endodontically treated teeth is unknown. This study examined the hypothesis that in vivo fluid movement through simplified adhesives occurs when they are applied to root canals. Dowel spaces were prepared in endodontically treated teeth with single root canals. Six adhesives were applied to the intra-radicular dentin of canal walls. Impressions were obtained with polyvinyl siloxane, and replicas were fabricated with the use of polyether impression material. Replica hemisections were gold-coated for SEM examination. Fluid transudation was evident on the adhesive surfaces of all simplified total-etch and self-etch adhesives. Conversely, most of the specimens bonded with the control three-step total-etch adhesive were devoid of fluid droplets. Permeability of simplified adhesives results in water movement, even in root-treated dentin. This may adversely affect the coupling of auto-/dual-cured resin cements.