CHARACTER OF THE HARD TOOTH TISSUE-POLYMER BOND .1. STUDY OF THE INTERACTION OF CALCIUM-PHOSPHATE WITH NORMAL-PHENYLGLYCINE AND WITH NORMAL-PHENYLGLYCINE-GLYCIDYL METHACRYLATE ADDUCT

A model investigation was carried out to establish the chemical character of the bond between hard tooth tissues and polymeric materials. The interaction of NPG and NPG-GMA with Ca3 (PO4)2 and 45Ca3(PO4)2 was studied in aqueous, alcoholic and aqueous-alcoholic solutions. It was shown that NPG and NPG-GMA react in solution with Ca ions which are in equilibrium with calcium phosphate. The reaction proceeds more intensively in aqueous-alcoholic medium due to its ionic character. The IR spectra of the reaction products show the presence of NPG-GMA calcium salt. J Dent Res 58(9):1879-1883, September 1979. © 1979, SAGE Publications. All rights reserved.