| 摘要 |
A dental attachment has been invented whose connection force and fitting between an implant and a keeper are improved. A keeper 3 has a main body 10 with a attracted face 31, a screw part 33 that is located at the back face, a conic taper shaft 35, and a projecting ring part 37. The projecting ring part 37 has an inclining inner face 371 and an acute angle pointed end 375. An implant 10 has a screw hole part 13, a conic taper hole part 15 which has about the same inclining angle of the taper axle part 35, and inclining end face 17. When the keeper 3 and the implant 10 are connected, the taper shaft 35 and the taper hole part 15 are fitted closely and at the same time, the inner face 371 of the acute angle pointed end 375 and the inclining end part 17 touch and at least the acute angle pointed end 375 of the projecting ring part 37 is elastically transformed toward the diameter. <IMAGE>
|
