PURPOSE: To realize expression of a profound tone with a rich natual appearance which does not allow the transmission of color of an opaque by a method wherein the opaque is applied on the ground of a denture or the like, a particulate polymer with a coloring component added thereto is attached onto it and then, polymerization processing is performed to harden the polymer.

CONSTITUTION: In a metal frame as ground, an opaque is applied on a part alone where a dentinal color and a mamelon form are reproduced and a particulate polymer colored in a dentinal color is sprayed on the surface thereof. Then, the excessive portion of the particulate polymer is shaken off. The material of the particulate polymer is selected to ensure that it can firmly be bonded chemically on the opaque and a photopolymerization type paste to be heaped thereon. Then, the opaque is applied on a cut end part left and a particulate polymer colored in an incisal color is sprayed. Excessive portion of the particulate polymer is shaken off. Thereafter, a dedicated polymerizer is used to harden the polymer by polymerization. Thus, a paste-like photopolymer-hardened resin is heaped to complate the product by the correction of the form and grinding.