| 摘要 |
The unit comprises an elongated ultrasonic oscillating body having a tubular conduit (26) extending beyond one end and provided with a weighted head (38) on the outer end and in which a socket (40) is formed and disposed at an obtuse angle (6) to the axis of the body by means of providing a bend (36) in said conduit intermediately of the ends thereof subtending an obtuse angle (a) of greater magnitude than the obtuse angle of said socket, the weight of said head being adequate to damp the vibrations imposed upon an endodontic file, (44) when mounted in the socket, to a degree sufficient to minimize the breakage of files and also induce in the files desired vibratory and oscillating movement to effect efficient operation in endodontic performance. The socket has a larger diameter than the shank of the file, whereby a space (46) is provided in the socket to discharge liquid medicament longitudinally along the file. |
