PROBLEM TO BE SOLVED: To provide a magnetic attachment for an artificial tooth, preventing a member used in an outer shell for covering a permanent magnet from being magnetized in an unintended part to lower magnetic attraction force, and easily manufactured.SOLUTION: A magnetic attachment for an artificial tooth includes: a permanent magnet structure fixedly provided on a side contacting an alveolar ridge of a denture base and having a permanent magnet disposed in the interior of an outer shell and a keeper including a soft magnetic metal material fixedly provided on an upside of the alveolar ridge in an oral cavity opposite to the permanent magnet structure. A spacer formed of non-magnetic metal material, which constitutes a part of the outer shell covering the permanent magnet is fixed to another member constituting the outer shell by an adhesive.COPYRIGHT: (C)2014,JPO&INPIT【課題】永久磁石を覆う外殻に用いられる部材が意図しない部位で磁性を帯びて磁気的吸引力が低下することがなく、製造も容易な義歯用磁性アタッチメントを提供する。【解決手段】義歯床の顎堤に接する側に固設され、外殻の内部に永久磁石を配置した永久磁石構造体と、該永久磁石構造体に対向するように口腔内の顎堤上部に固設される軟磁性金属材料を含むキーパーと、を備える義歯用磁性アタッチメントであって、永久磁石を覆う前記外殻の一部を構成する非磁性金属材料からなるスペーサーが、接着剤によって外殻を構成する他の部材に固定されていることを特徴とする。【選択図】図2
