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(World Health Organization, Geneva, Switzerland, 2014)

When I finally got up to the counter, the young cashier smiled and let me know she was deaf, showing me some cards to help with my purchase

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Three of my siblings smoked

Other Factors That Can Stain Your Teeth In addition to smoking, other factors can cause teeth stains and discoloration, including: Poor oral hygiene, which allows bacteria and plaque to accumulate on your teeth Drinking coffee, tea, red wine, and other dark beverages Eating certain foods that are high in chromogens (pigments that can cause discoloration) Certain medications, such as tetracycline and doxycycline Age, as teeth naturally yellow with age

Wood, John Cunningham (1987)