| http://www.w3.org/ns/prov#value | - A dental/medical restorative/prosthetic composition comprising a polymerizable unsaturated substituted butane moiety with acid or reactive acid derivative functionality having the general formula: (RO2 C)x --C4 H6 --(CO2 R')y where R is hydrogen, an acid radical containing moiety or a moiety containing a reactive acid derivative and R' is a polymerizable unsaturated ester containing radical having
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