TY - JOUR
T1 - Water sorption/solubility of dental adhesive resins
AU - Malacarne, Juliana
AU - Carvalho, Ricardo M.
AU - de Goes, Mario F.
AU - Svizero, Nadia
AU - Pashley, David H.
AU - Tay, Franklin R.
AU - Yiu, Cynthia K.
AU - Carrilho, Marcela Rocha de Oliveira
N1 - Funding Information:
This study was performed by Juliana Malacarne as partial fulfilment of her M.S. degree at the University of Campinas. The authors gratefully acknowledge the valuable assistance given by Mr. Marcos Blanco Cangiani for the technical and laboratorial support, and by Dr. Marcelo Alves of the School of Agronomy Luiz de Queiroz of the University of São Paulo, who performed the statistical analysis. The experimental resins used in this study were developed and donated by Bisco, Inc. This study was supported in part by Grants from CAPES/PRODOC (to PI Dr. Carrilho), 305300/04-0, 474226/03-4 from CNPq (to PI Dr. Carvalho), Brazil; by R01 grants DE 014911 and DE 015306 (to PI Dr. Pashley) from the National Institute of Dental and Craniofacial Research, Bethesda, MD, USA; and by grant 10204604/07840/08004/324/01, Faculty of Dentistry, The University of Hong Kong, China.
PY - 2006/10
Y1 - 2006/10
N2 - Objectives: This study evaluated the water sorption, solubility and kinetics of water diffusion in commercial and experimental resins that are formulated to be used as dentin and enamel bonding agents. Methods: Four commercial adhesives were selected along with their solvent-monomer combination: the bonding resins were of Adper Scotchbond Multi-Purpose (MP) and Clearfil SE Bond (SE) systems, and the "one-bottle" systems, Adper Single Bond (SB) and Excite (EX). Five experimental methacrylate-based resins of known hydrophilicities (R1, R2, R3, R4 and R5) were used as reference materials. Specimen disks were prepared by dispensing the uncured resin into a mould (5.8 mm × 0.8 mm). After desiccation, the cured specimens were weighed and then stored in distilled water for evaluation of the water diffusion kinetics over a 28-day period. Results: Resin composition and hydrophilicity (ranked by their Hoy's solubility parameters) influenced water sorption, solubility and water diffusion in both commercial and experimental dental resins. The most hydrophilic experimental resin, R5, showed the highest water sorption, solubility and water diffusion coefficient. Among the commercial adhesives, the solvated systems, SB and EX, showed water sorption, solubility and water diffusion coefficients significantly greater than those observed for the non-solvated systems, MP and SE (p < 0.05). In general, the extent and rate of water sorption increased with the hydrophilicity of the resin blends. Significance: The extensive amount of water sorption in the current hydrophilic dental resins is a cause of concern. This may affect the mechanical stability of these resins and favor the rapid and catastrophic degradation of resin-dentin bonds.
AB - Objectives: This study evaluated the water sorption, solubility and kinetics of water diffusion in commercial and experimental resins that are formulated to be used as dentin and enamel bonding agents. Methods: Four commercial adhesives were selected along with their solvent-monomer combination: the bonding resins were of Adper Scotchbond Multi-Purpose (MP) and Clearfil SE Bond (SE) systems, and the "one-bottle" systems, Adper Single Bond (SB) and Excite (EX). Five experimental methacrylate-based resins of known hydrophilicities (R1, R2, R3, R4 and R5) were used as reference materials. Specimen disks were prepared by dispensing the uncured resin into a mould (5.8 mm × 0.8 mm). After desiccation, the cured specimens were weighed and then stored in distilled water for evaluation of the water diffusion kinetics over a 28-day period. Results: Resin composition and hydrophilicity (ranked by their Hoy's solubility parameters) influenced water sorption, solubility and water diffusion in both commercial and experimental dental resins. The most hydrophilic experimental resin, R5, showed the highest water sorption, solubility and water diffusion coefficient. Among the commercial adhesives, the solvated systems, SB and EX, showed water sorption, solubility and water diffusion coefficients significantly greater than those observed for the non-solvated systems, MP and SE (p < 0.05). In general, the extent and rate of water sorption increased with the hydrophilicity of the resin blends. Significance: The extensive amount of water sorption in the current hydrophilic dental resins is a cause of concern. This may affect the mechanical stability of these resins and favor the rapid and catastrophic degradation of resin-dentin bonds.
KW - Dental resins
KW - Hydrophilicity
KW - Solubility
KW - Water sorption
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U2 - 10.1016/j.dental.2005.11.020
DO - 10.1016/j.dental.2005.11.020
M3 - Article
C2 - 16405987
AN - SCOPUS:33748164005
SN - 0109-5641
VL - 22
SP - 973
EP - 980
JO - Dental Materials
JF - Dental Materials
IS - 10
ER -