| 摘要 |
A precision attachment device for securing a removable dental prosthesis in the mouth. The attachment includes a first section (11) operatively arranged to be secured to a fixed tooth (13), and a second section (12) operatively arranged to be secured in various positions of rotation within the prosthesis, and also being arranged to matingly engage the first section (11). The second section has a first mating member (26) having a throughbore (30) therein, and also having en elongated casing (28) rotatably disposed within the throughbore (30) of the first mating member (26). The second section (12) also includes a spring loaded plunger member (32) disposed within the casing and projecting therefrom, and a retention member (29) carried by the rotatable casing for limiting the extent of longitudinal travel of the plunger member (32). The parts can be readily positioned for use by a mandrel (96) which either engages the first section directly or which engages other parts of the attachment by a positioning matrix (97, 99, 102, 104 or 105).
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