Can teeth whitening treat bad breath?

The color of teeth and bad breath are not normally connected. Not brushing and flossing, being dehydrated, and having tonsil stones are some of the most common causes of bad breath — none of which has anything to do with how your teeth actually look. Sometimes, tooth decay can cause bad breath. In that case, a filling will help but whitening won’t. Whitening is a purely cosmetic treatment.

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