A dental composition contains at least one acid (meth)acrylamide monomer which has two or more polymerizable groups, at least one acid monomer which has only one polymerizable group, and at least one polymerization initiator. Independent claims are also included for: (A) system comprising the inventive dental composition and a dental material curable by radical polymerization; and (B) fixing of a radically polymerizable dental material to tooth enamel and/or dentin comprising applying the inventive dental composition and a dental material curable by radical polymerization to tooth enamel and/or dentin and polymerizing the dental material.
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