Permeability of adhesive resin films.

The purpose of this study was to quantify the permeability of adhesive resin films to water by measuring convective flow across thin films. Cured resin films were prepared with the use of five commercially available adhesive resins and an experimental resin. Two types of resin films were prepared from solvated comonomer blends within each product; resin films made before or after evaporation of solvent (10 s of drying with air-syringe). The permeability of the resin films was measured 30 min or 24 h after polymerization by placing the films in a split-chamber device. Fluid filtration rate through the resin films was measured with the use of 20 cm of water pressure. Osmotically induced water movement was measured by applying hypertonic aqueous solutions of CaCl2 or HEMA to the resin films. The results showed that evaporation of solvent before polymerization reduced the permeability of adhesive resin films, compared to permeabilities obtained without solvent evaporation. The cured adhesive resin films were all permeable to water, but to varying degrees.

[1]  F. Tay,et al.  Water treeing--a potential mechanism for degradation of dentin adhesives. , 2003, American journal of dentistry.

[2]  Y. Zhang,et al.  Effects of HEMA on water evaporation from water-HEMA mixtures. , 1998, Dental materials : official publication of the Academy of Dental Materials.

[3]  D. Pashley,et al.  Nanoleakage at the dentin adhesive interface vs microtensile bond strength. , 1999, Operative dentistry.

[4]  G. Vanherle,et al.  Four-year Water Degradation of Total-etch Adhesives Bonded to Dentin , 2003, Journal of dental research.

[5]  D. Pashley,et al.  Effects of air-drying in vitro on human dentine permeability. , 1984, Archives of oral biology.

[6]  Hidehiko Sano,et al.  In vitro degradation of resin-dentin bonds analyzed by microtensile bond test, scanning and transmission electron microscopy. , 2003, Biomaterials.

[7]  D. Pashley,et al.  The effect of molecular size on reflection coefficients in human dentine. , 1979, Archives of oral biology.

[8]  Hidehiko Sano,et al.  SEM and TEM analysis of water degradation of human dentinal collagen. , 2003, Journal of biomedical materials research. Part B, Applied biomaterials.

[9]  D. Pashley,et al.  Permeability of human dentine in vitro interpreted from reflection coefficients. , 1980, Archives of oral biology.

[10]  Hidehiko Sano,et al.  Micromorphological changes in resin-dentin bonds after 1 year of water storage. , 2002, Journal of biomedical materials research.

[11]  J. Tagami,et al.  Long-term Durability of Dentin Bonds Made with a Self-etching Primer, in vivo , 1999, Journal of dental research.

[12]  F. Rueggeberg,et al.  The effect of organic solvents on one-bottle adhesives' bond strength to enamel and dentin. , 2003, Operative dentistry.

[13]  Hidehiko Sano,et al.  Degradation patterns of different adhesives and bonding procedures. , 2003, Journal of biomedical materials research. Part B, Applied biomaterials.

[14]  Franklin R Tay,et al.  How can nanoleakage occur in self-etching adhesive systems that demineralize and infiltrate simultaneously? , 2002, The journal of adhesive dentistry.

[15]  D H Pashley,et al.  Two Modes of Nanoleakage Expression in Single-step Adhesives , 2002, Journal of dental research.

[16]  D. Pashley,et al.  Dentinal fluid dynamics in human teeth, in vivo. , 1995, Journal of endodontics.

[17]  W. G. Matthews,et al.  Fluid shifts across human dentine in vitro in response to hydrodynamic stimuli. , 1996, Archives of oral biology.