| 摘要 |
A synthetic resin shank 10 has a flat 11 and groove 12 for engagement with a latching handpiece. A metal end-piece has a spigot 16 with screw-driver flats 17, 18 which fit in a mating socket 13 in the shank. The end-piece has a threaded pin 19 for insertion in the tooth, an anchor section consisting of bulbous portions 22 and 23 and a shearing neck 21. |
