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Can You Brush Your Teeth Too Much in a Day?

"Brush your teeth twice a day, see your dentist twice a year" is a slogan many people grew up with, so that brushing in the morning and at bedtime became part of the daily routine. Brushing your teeth helps remove plaque, the film that forms on your teeth. Bacteria in plaque causes cavities and gum disease. Some people may feel that since brushing twice is good, brushing more than twice is better.

  1. Twice Daily

    • Brushing at least twice a day for two minutes should be enough, with three daily brushings the ideal. Brushing more often than that could actually harm the mouth, according to Michael Sesemann, DDS, an Omaha dentist who is president of the American Academy of Cosmetic Dentistry. Too much brushing can irritate the tooth root and lead to receding gums, while excessive and overly vigorous brushing can ultimately erode tooth enamel.

    Soft Bristles

    • A soft-bristled brush is easier on the teeth and gums than brushes labeled "firm." However, if people perceive soft brushes as less effective than the firm type, they are apt to cancel out the beneficial effect by brushing too hard or too long. Two minutes is adequate for each brushing session, and a light pressure is best for cleaning without causing harm.

    Differing Opinions

    • Even dental authorities do not always agree on what is a sufficient number of daily brushings. An article in Business Week suggests that some dentists believe that brushing just once a day, at bedtime, is enough, if combined with thorough flossing. For people who feel uncomfortable starting the day with "morning mouth," however, brushing after breakfast, plus flossing and mouthwash, is a suitable addition to the nighttime regimen.

    After Meals

    • While brushing after breakfast, lunch and dinner may be the ideal system, brushing too soon after meals may erode enamel that is softened by the acidic environment that food creates in your mouth. Certain acidic foods and beverages such as orange juice can weaken tooth enamel. Wait 30 to 60 minutes before brushing to allow the acidity to neutralize.

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