While cleaning out my bathroom cabinet earlier this week, I found this mysterious Japanese "Densi POWER" electronic ion toothbrush. It claims to emit 30 microamps of electric currents throughout the body, which somehow prevents cavities. The currents are only activated when it's used with toothpaste. I would stay away from it, but it has the official seal of approval from the Japanese Association of Preventive Medicine for Adult Disease on it. If anybody has any further information on this toothbrush &mdash how it works, or how it got in my bathroom cabinet, even &mdash please leave a comment.