Which is better, a manual toothbrush or an electric one?

Comparisons have been made between power-assisted (electric) toothbrushes and manual toothbrushes to look at the ability of each to remove plaque, prevent or reduce calculus (tartar) buildup, and thus reduce gingivitis (gum disease). These research studies have shown both powered and manual toothbrushes to be equally effective when used correctly. Therefore, in practical terms, which brush you use is probably not the critical factor, but how you use it.

The American Dental Hygienists Association website (http://www.adha.org) includes instructions for proper toothbrushing technique with a manual brush. Product packaging shows the best way to use powered brushes.