The ultrasonic dental scaler transducer includes a horn at the front end, a piezoelectric ceramic at the middle, and a main rod at the rear end. The transducer also includes a connecting rod. A rear end of the horn is provided with a connecting groove. A front end of the connecting rod is sealingly connected to the connecting groove, and a rear end of the connecting rod extends through the main rod and extends beyond the main rod for a certain length. The piezoelectric ceramic sleeves the connecting rod, and the front and rear ends of the piezoelectric ceramic are respectively in abutting connection with the horn and the main rod. The present invention further discloses a dental scaler handle.
