Patent ID: 7748982

Claim:
A dental attachment configured to be embedded in a denture base so as to face a keeper made of soft magnetic material in a tooth root, the dental attachment comprising: a magnetic element delivering magnetic attractive force; a yoke made of a soft magnet material and including a recess for housing the magnetic element; and a disk joined so as to close an opening of the recess with the magnet element housed in the recess; wherein the yoke includes a substantially circular disk-shaped portion and collars protruding radially outward from an outer peripheral surface of the disk-shaped portion of the yoke such that the yoke is formed as a single piece, and wherein the collars extend outwardly from a top surface of the disk-shaped portion of the yoke and are formed to be separated in at least two locations by separating parts having radially outward projection amounts from zero to 50% of a maximum projection amount of the collars.