| abstract |
The present invention relates to a denture adhesive composition comprising a salt of an alkyl vinyl ether-maleic acid or anhydride copolymer, the salt containing a cationic salt function comprising a cation selected from the group consisting of Group IA and Group 2A cations of the periodic table, yttrium, titanium, zirconium, vanadium, chromium, manganese, iron, nickel, copper, zinc, boron, aluminum, sodium, cations and mixtures thereof; wherein the specific viscosity of the starting copolymer acid or copolymer anhydride is above 5.5 when preferably measured in a 1 % weight/volume solution in methyl ethyl ketone at 25 °C. In addition the present invention relates to denture adhesive compositions comprising the above composition and at least one non-adhesive self-supporting layer. The present invention further relates to a method of increasing the adhesion of dentures to the oral cavity by applying the above compositions to dentures, directly to the oral cavity, palate or ridge of the oral cavity, or applying it to both, and thereafter securing the dentures to the ridge or palate of the oral cavity. |