Would you like an electric toothbrush that signals you every 30 seconds to switch to another part of your mouth? Beeps if you are brushing too hard? Vibrates when you’ve brushed for two minutes? Massages your gums? Uses ultrasound to remove plaque? Toothbrush manufacturers make all kinds of claims about their products but it’s hard to evaluate them. Results of studies are often inconsistent, and at least one toothbrush manufacturer has had to modify its claims of superior performance in recent years.
The Cochrane Oral Health Care Group’s review (30 years of studies) compared manual and power toothbrushes and found that models with rotation-oscillation action (bristles that rotate in one direction, then the other) were the only ones superior to manual toothbrushes in reducing plaque and gingivitis—and the improvement was “modest.” No studies actually showed a reduction in periodontal disease or cavities even with rotation-oscillation action—all types of power toothbrushes worked well, but no better than manual. The Cochrane Collaboration assembles independent researchers to evaluate studies.
It’s fairly easy to maintain your dental health. A plain soft-bristled toothbrush is still your best buy. Use a fluoridated toothpaste, brush for two minutes each session, and replace the brush every three months or so. Floss at least once daily. See your dentist every six months for a professional checkup and cleaning.