01/16/2009 Submitted in the Senate, considered, and agreed to without amendment and with a preamble by Unanimous Consent. (consideration: CR S658-659; text as passed Senate: CR S658-659; text of measure as introduced: CR S656) (All Actions)
Coffee and Tea Effects on Teeth. Coffee and tea are especially tough on teeth, because tannic acid scrapes into the pits and grooves of tooth enamel and can stain teeth. The amount of coffee a person consumes daily does affect the color of their teeth.
How a cup of black coffee stops your teeth rotting: Certain type of bean has property that can help break down bacteria that causes plaque. 1  Black coffee drunk in moderation can stop tooth decay, study shows. 2  Scientists tested extracted baby teeth with extract from Coffea canephora. 3  Is a type of bean used in up to 30 per cent of the world's coffee.