| 摘要 |
PCT No. PCT/SE96/00491 Sec. 371 Date May 30, 1996 Sec. 102(e) Date May 30, 1996 PCT Filed Apr. 17, 1996 PCT Pub. No. WO96/34576 PCT Pub. Date Nov. 7, 1996The present invention relates to a temporary ball impression coping (1) for use during the preparation of a overdenture having ball attachment devices for attaching said overdenture to fixtures in the jaw. The coping (1) is provided with a bore (4) for cooperation with a ball part on said ball attachment device. The bore has a cross-section which is polygonal in shape. |
