| 摘要 |
<p>A denture attachment excellent in mounting performance and hardly causing a deviation between a magnetic structure and a keeper, comprising a magnetic device (1) for delivering a magnetic attraction power and a keeper (2) attracted to the magnetic device (1), wherein the keeper (2) has a convex protrusion (21) and an attracted surface (211) on the top surface of the protrusion (21). The magnetic device (1) comprises a built-in permanent magnet (14) and has a magnetic structure (11) provided with an attraction surface (112) and a non-magnetic guide ring unit (12) disposed on the side peripheral surface of the magnetic structure (11) and consisting of a non-magnetic element. The non-magnetic guide ring unit (12) and the attraction surface (112) are designed to form a recess (120) into which the protrusion (21) of the keeper (2) can be fitted.</p> |
