PROBLEM TO BE SOLVED: To provide an attachment for attaching a denture to an abutment tooth which is easily attached to and detached from the abutment tooth and gives an excellent wearing feeling and a comfortable biting feeling to a denture wearer. SOLUTION: The abutment tooth side mounting attachment 100 constituting a part of the abutment tooth detachable from each other and the denture side mounting attachment 200 embedded in a part of the denture are provided. It has an engagement receiving magnetic material member 101 made of a magnetic material having a metal crown 91 that covers the crown and an engagement recess 110 that is attached to the metal crown and engages with the denture side mounting attachment, and the denture side mounting attachment is A magnet 250 housed in the denture and a protruding portion 210 that is detachably fitted to the engaging recess are provided, and the engaging receiving magnetic member has the engaging receiving with the denture removed from the abutment tooth. The outer surface of the magnetic member is composed of a substantially flat surface portion, a curved surface portion, and a curved continuous region connecting these surfaces to form a sharp protrusion. [Selection diagram] Fig. 1
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