Permanent magnet assembly, keeper and magnetic attachment for denture supporting

Abstract

The invention relates to denture-supporting permanent magnet assemblies each using a magnetic attractive force, and provides denture-supporting permanent magnet assemblies, denture-supporting keepers, and denture-supporting magnetic attachments each of which uses a magnetic material with a high saturation magnetic flux density, i.e., a magnetic material comprising 15.5-18.5 wt % Cr and balance Fe as magnetic materials used for the permanent magnet assembly and the keeper in order to provide a magnetic attachment which keeps an excellent attractive force even if miniaturized. Also disclosed are denture-supporting permanent magnet assemblies, denture-supporting keepers, and denture-supporting magnetic attachments in which a coating layer of Ti or a Ti compound is formed on the surface of each of the permanent magnet assemblies and denture-supporting keepers in order to enhance the safety of each magnetic attachment by means of raising the corrosion resistance while maintaining a practically sufficient attractive force.

Dependencies are inferred from the claim text.