Patent ID: 6709270
Filing Date: 2004-03-23
Classification: A61C

Abstract:
The dental magnetic attachment comprising:an implant adapted to be embedded in jawbone, a keeper supported by said implant and a magnetic assembly that has a surface which attracts a surface of said keeper by magnetic attractive force, said keeper having a body having said attracted surface, a screw part that is located at the center of the back face which is opposite said attracted surface of said body, a conical tapered shaft at the base of said screw part, and a projecting ring part which projects toward the shaft to form a ring-shaped groove with said tapered shaft at the outer part of said back part, said projecting ring part having a slanted inner face that tapers toward a pointed end, and an acute angle &ggr; at said pointed end, an abutment for fixing the keeper thereto which has a screw hole part into which said screw part of said keeper is screwed, a conical tapered hole part which extends upward from the open side of said screw hole part and has approximately the same inclined angle of inclination as said tapered shaft, and has an inclined end face which slants upwards to a circumference of the opening of the tip of the implant at an angle &agr;2 wherein &ggr;2, wherein when said keeper and said implant are connected by said screw part upon being screwed into said screw hole part, said tapered shaft and said tapered hole part are connected, and only a tip portion of said inner face of said acute angle pointed end and only a peripheral portion of said inclining end face are in contact, and at wherein least said acute angle pointed end of said projecting ring part is elastically transformed radially.