Manual or Mechanical?

Back and forth goes the argument—what toothbrush is best? Gadgeteers can spend $150 for an electric brush designed to rotate and oscillate, with angled neck, sure-grip handle, dual speed control, and even a timer. Researchers say that rotation-oscillation electric brushes remove plaque and reduce gingivitis better than any other kind—but only slightly better. Do-it-yourselfers can pick up a manual toothbrush for under $3 at the pharmacy. Replace it every three months for two years—the warranty period on the electric brush—and you can save big bucks. Kids often prefer electric brushes because the smaller brush head makes it easier to reach those hard-to-reach back teeth. They also like the buzz or one of the singing toothbrushes. Electric brushes are often the [...]