The Internet is truly amazing: It takes only a few seconds to tap into a vast store of knowledge to find information that once took people hours or days. But amidst all that helpful data, there's also some not so helpful information—in fact, some can be downright harmful, including to your dental health.
One particular Internet trend is brushing teeth with black, gooey substances containing activated charcoal. Scores of online videos featuring people doing this are getting viral views, perhaps more for the “gross” factor than the claimed health benefits.
So, why do it? Advocates of using activated charcoal for oral hygiene claim the ingredient kills harmful microorganisms in your mouth. The charcoal is also supposed to whiten your teeth.
But clinical studies of the practice, including one recently published in the Journal of the American Dental Association have been unable to substantiate these claims. There's simply no evidence that activated charcoal does what its advocates say it can do.
Unfortunately, there is evidence the practice can actually harm your teeth. This is because activated charcoal is an abrasive substance that over time could damage your teeth's enamel. Eroded enamel doesn't regrow, so eventually the more vulnerable dentin, the tooth layer just beneath the protective enamel, becomes exposed. It's not only darker and less attractive than enamel, its more susceptible to tooth decay and cavities.
The best way to care for your teeth, brushing and flossing daily, may seem boring compared to videos of brushing with charcoal, but it is effective—and safe. You should also see your dentist for more thorough cleanings at least every six months to round out your dental care.
And if you want a brighter smile, your dentist can perform a tooth whitening procedure that can give you months or even years of satisfaction. Professional tooth whitening (or even home whitening kits applied properly) also won't harm your enamel.