A dental filling composition includes zirconia powder, a hydraulic inorganic binding agent, a slightly acidic hardening controller agent and a pozzolan component with respect to the gross weight of the composition. The dental filling composition includes 45% to 85% of zirconia powder with respect to the gross weight of the composition, and includes a minimum quantity of inorganic bidding agent, thus exhibiting excellent radio opacity and hardly comprising heavy metals. Therefore, the dental filling composition of the present invention is excellent in to biocompatibility, and therefore, can be safely and widely used in various dental filling operations.
