The DTS601 toothbrush works by using ultrasound. The brush head has a generator that produces high-frequency sounds, causing the bristles to vibrate. This method of operation is particularly recommended for people with tooth sensitivity and periodontitis, as the sonic brush head is very gentle on the surface of the teeth and gums. Using UltraSonic Vibration technology, the brush head delivers up to 32,000 brushing strokes per minute, effectively removing plaque with the sweeping motion particularly recommended by dentists. Despite this high vibration and effectiveness, the toothbrush is completely safe to use. Due to their excellent penetration of interdental spaces and hard-to-reach areas in the mouth, sonic brushes are especially recommended for people wearing braces.