Patent ID: 7288615

Claim:
A denture base comprising a co-polymer that comprises a first repeating unit derived from an alkyl or aryl methacrylate monomer and a second repeating unit is derived from a phosphate-containing monomer having the formula wherein X is selected from the group consisting of —O—PH 2 O 3 and —R—O—PH 2 O 3 , wherein the R group in —R—O—PH 2 O 3 is selected from the group consisting of —COO—CH 2 —CH 2 and a straight or branched alkyl chain of 10 carbon atoms or less, wherein the two methylene groups in —COO—CH 2 —CH 2 and the alkyl carbon chain can be substituted with an aryl group, a cycloalkyl group or both, wherein the molar ratio of said first repeating unit to said second repeating unit in the co-polymer is 80 to 20 or higher and the denture base made of the co-polymer has a flexural strength of at least 62.44 megapascals (MPa).