A member asked:

Hi i brushed my teeth within 4 hours apart. right after the 2nd time my tongue felt cool as usual from the paste but numbing. why would that happen and i also noticed a small dark spot on it. thanks?

3 doctors weighed in across 2 answers
Dr. Heidi Fowler answered

Specializes in Psychiatry

Brushing teeth: The numbness may be related to the ingredients in your toothpaste. Can't say why you noticed a the small dark spot on your tongue.

Answered 7/29/2020

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Numbing: A common side effect of baking soda tooth pastes. Stop using the t'paste and sensations should disappear in 24 hours or less. Of greater concern is the spot on your tongue. Should be completely gone in 2 weeks. If not, see hyor Den test or an Oral Surgeon.

Answered 7/28/2020

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