Materials Science Bond Strength Between Dentin and Restorative Resins Mediated by Mixtures of HEMA and Glutaraldehyde

Abstract

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.

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References

Asmussen, E. and Munksgaard, E.C. (1983): Bonding of Restorative Resins to Dentin by Means of Methacryloylchloride and Methacryloyl-R-isocyanate , Scand J Dent Res 91:153-155.

Asmussen, E. and Munksgaard, E.C. (1984): Formaldehyde as Bonding Agent between Dentin and Restorative Resins, Scand J Dent Res, In press.

Bowen, R.L. ; Cobb, E.N. ; and Rapson, J.E. (1982): Adhesive Bonding of Various Materials to Hard Tooth Tissues: Improvement in Bond Strength to Dentin, J Dent Res 61:1070-1076.

Dankert, J. ; 's- Gravenmade, E.J. ; and Wemes, J.C. (1976): Diffusion of Formocresol and Glutaraldehyde through Dentin and Cementum, J Endodont 2:42-46.

's- Gravenmade, E.J. (1975): Some Biochemical Considerations of Fixation in Endodontics, J Endodont 1:233.

Schecter, I. (1975): Prolonged Retention of Glutaraldehyde-treated Skin Allografts and Xenografts; Immunological and Histological Studies, Ann Surg 182:699.

Stinson, E.B. ; Griepp, R.B. ; and Shumway, N.E. (1974): Clinical Experience with a Porcine Aortic Valve Xenograft for Mitral Valve Replacement. Stanford, California: Div. of Cardiovascular Surgery, Stanford Univ. Med. Center.

Wemes, I.C. ; Veldkemp, D.F. ; and Purdell Lewis, D. (1983): Glutaraldehyde in Endodontic Therapy: Philosophy and Practice, J Dent 11:63-70.

Zidan, O. ; Asmussen, E. ; and Jrgensen, K.D. (1980): Correlation between Tensile and Bond Strength of Composite Resins, Scand J Dent Res 88:348-351.