| 摘要 |
A dental pin having a threaded portion for insertion into a tooth is formed with a shank which has portions inclined relative to the threaded portion and to each other. The threaded portion and shank are of integral construction and the shank is of zig-zag shape. A holder for the pin can take several forms each with a bore for receiving the shank releasably but in driving engagement with the holder. The holder may take a form suitable for use with a dental handpiece or for manual insertion of the pin. The invention also provides a holder with a ratchet mechanism for manual insertion of the pin. |
