A magnetostrictive, electrical-powered ultrasonic scaler intended for use during all general supra- and subgingival scaling, routine prophylaxis procedures, and periodontal therapy. Consists of a handpiece with a mechanical resonator coupled to a scaler tip. Scaler is capable of accepting 25-kHz and 30-kHz inserts from many brands, and it automatically detects which insert is in use so that no switch is needed.