| 摘要 |
A dental handpiece includes a handle, a shank projected from the forward end of the handle, a turbine head on the forward end of the shank, and a turbine type dental engine in the head, with the engine being capable of holding and rotating a suitable dental bur. The head may be secured to the shank in a fixed position, with the engine axis at an oblique angle to the handle axis, the angle being such that regions and surfaces heretofore inaccessible to the dental bur are now easily accessible. Also the head may be coupled to the shank such that it pivots relative to the shank and handle, in which case, the axis of the dental engine and bur may be varied to suit the particular dental procedure that is to be performed. Means are provided for locking the head in the selected position.
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