PROBLEM TO BE SOLVED: To provide a dental restoration kit consisting of a pretreatment agent and a dental restoration material, allowing adhesion and fixation of a dental restoration material to a tooth cavity part by simple operation and also effective avoidance of reduction in adhesive strength due to polymerization shrinkage in curing a dental restoration material, and being capable of forming a highly strong cured product (i.e. restoration material).SOLUTION: A dental restoration kit consists of a pretreatment agent (A) and a filling restoration material (B), and uses a combination of a fourth period transition metal compound with an organic peroxide as a chemical polymerization initiator, where the pretreatment agent (A) contains a (meth)acrylic polymerizable monomer component comprising a (meth)acrylic polymerizable monomer having at least an acidic group (a1), water (a2), a water-soluble organic solvent (a3), one component of the chemical polymerization initiator (a4) and a radical chain transfer agent (a5), and the filling restoration materials (B) contains a non-acidic (meth)acrylic polymerizable monomer (b1), an inorganic filler (b2), the other component of the chemical polymerization initiator (b3) and a photopolymerization initiator (b4).
