Bond strength between dentin and restorative resins mediated by mixtures of HEMA and glutaraldehyde.
We investigated the bond strength between restorative resin and dentin pre-treated with mixtures of HEMA and glutaraldehyde. It is suggested that the mixture acts by forming a chemical bond of HEMA molecules to a collagen-glutaraldehyde reaction complex. Subsequently applied resin will then co-polymerize with the collagen-linked methacrylate groups. Statistical analysis of the results from varying mixtures of HEMA and glutaraldehyde revealed that the bond strength was highly dependent on the HEMA concentration, with a maximum at 35%, and nearly independent of the glutaraldehyde concentration when greater than 3%. The highest mean bond strength was about 1.8 kg/mm2, and bond strength of this order of size may be attractive for clinical use.
D000179:Acrylates / Q000032:analysis; D000447:Aldehydes / Q000032:analysis; D003188:Composite Resins / Q000032:analysis; D001840:Dental Bonding; D003804:Dentin / Q000033:anatomy & histology*; D004492:Edetic Acid; D005976:Glutaral / Q000032:analysis; D006801:Humans; D008689:Methacrylates / Q000032:analysis; D013718:Tensile Strength
D000179:Acrylates; D000447:Aldehydes; D003188:Composite Resins; D008689:Methacrylates; C005044:hydroxyethyl methacrylate; D004492:Edetic Acid; D005976:Glutaral