The present study investigated the effects on the bonding between the denture base acrylic resin and the soft silicon based lining material of maleic anhydridestyrene-vinyl acetate (MA-St-VA) terpolymer and some of its ester derivatives. These ester derivatives were n-propylmaleate-styrene-vinyl acetate (n-PrMA-St-VA), n-buthylmaleate-styrene-vinyl acetate (n-BuMA-St-VA) and n-benzylmaleate-styrene-vinyl acetate (n-BzMA-St-VA). Fourier Transform infrared spectroscopy method was used to determine interactions between terpolymers with the acrylic resin and soft lining material. The tensile bond strength of all the groups was compared and the obtained differences were statistically significant (P < 0.05). The highest value was found for the samples lined with n-BuMA-St-VA (2.11 +/- 0.21 MPa) and the samples lined with n-BzMA-St-VA had the lowest bond strength (0.3 +/- 0.1.2 MPa). (c) 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104:1338-1341, 2007.