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The ADA does not officially support the use of activated charcoal products in dentistry. A fad these days is the use of charcoal for whitening. Some people are even brushing their teeth with charcoal. Many brands claim that activated charcoal results in whiter teeth. Does it actually work? Is the water-charcoal slurry mixture worth it?
The Oral Health Foundation in the UK says there is no research or evidence to support the claims by activated charcoal products. In addition, many of the charcoal toothpastes contain less than the 1,250 to 1,500 parts per million of fluoride needed to actively protect teeth from tooth decay. Some of the products can be overly abrasive and can wear away the enamel on teeth. The roughened enamel can make it easier for bacteria to stick to the surface of teeth.
The bottom line is that there isn’t any proof that charcoal is safe and effective for your teeth. Until we learn more, stick to the products your dentist recommends.