Black tea's tannin content and acidity can actually stain teeth more than coffee. Green tea stains less but still leaves color over time.
The same guidance applies: rinse, use a straw when possible, and treat accumulated staining with a peroxide course. Whitening toothpaste is a strong daily maintenance layer for tea drinkers.
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Ira Zoot is not a licensed dentist or clinician. As the site's independent editorial reviewer, Ira reads every page before it ships and cross-checks the underlying claims against published guidance from the American Dental Association (ADA), the U.S. National Institutes of Health / NIDCR, and Cochrane Oral Health reviews. Any clinical decision should still be made with your own dentist.