Submarines use sonar to detect enemy subs and

doctors use ultrasound to examine patients. We’re used to the benefits of ultrasound in these areas, but brushing your teeth is a new one. Now, the Sonicare toothbrush brings high-tech uttrasound right to your bathroom. It uses 31,000 strokes per minute to clean your teeth and gums, removing 80% of stains and cleaning twice as well as ordinary toothbrushes. It’s like a trip to the dentist, but

without all the pain. Price: NT$6000.