Manual method is to use manual device to remove the stone of the tooth directly, to the gum injury big, the amount of blood is much, already basically eliminated now. The ultrasonic method is to use the ultrasonic wave of the probe on the handle of the probe to send the ultrasonic to break the stone of the tooth, thus achieve the purpose of removing the stone. The sandblasting method is based on the ultrasonic method, which can be used to polish the surface of teeth.
