A keeper for a dental magnetic attachment

摘要

The keeper (1) has a body (10) shaped like a plate and a root (2) attached to the bottom of the body. The root has a smaller diameter part (21) linked to a larger diameter part (22) having external diameter larger than that of the smaller diameter part. The smaller diameter part is linked to the bottom of the keeper body. Multiple circumferential grooves (225) are formed around outer side of the larger diameter part. The body and the root are machined from a single piece of soft magnetic material in one piece.