The subject matter of the invention is a kit for fixing a dental restoration material on a tooth substance, which material contains the following components: a. an electron donor compound; b. a first adhesive component which contains an oxidation agent as constituent of a polymerization initiator system and a polymerizable acid; c. a second adhesive component which contains a reduction agent as constituent of a polymerization initiator system and a polymerizable monomer, oligomer, or prepolymer, which does not contain any acid groups.