| abstract |
A polymerization initiator, a curable composition containing the polymerization initiator, a dental material containing the composition, and an alternative to a polymerization initiator system using a benzoyl peroxide-aromatic amine compound, which has an excellent curing rate. To provide a dental filling material and a kit for preparing the curable composition. The present invention is one or more selected from the group consisting of a pyrazolidinedione compound and / or a pyrazolidine (di) thion compound (A1), a salt (A2) of the compound (A1), and a malonic acid ester compound (A3). Contains a polymerization initiator containing the compound (A) of. |