| 摘要 |
A dental hand-piece including an electronic ultrasonic transducer energized by a cable connecting an electronic ultrasonic generator including a coupling device for energizing interchangeable treatment tools retained in the hand-piece. Each of the tools and coupling device having a bore therein for conducting pressurized water from said hand-piece for supplying water to the area of the tooth contacted by the tip portion of the tool and including a pair of typical tools for tooth treatment.
|
