Tooth decay is caused by bacteria that
feed on scraps of food ( sugars ) , producing lactic acid that destroys tooth
enamel .
It is recommended to brush your teeth
after meals and before bed ( when saliva decreases ) .
Use toothpaste sparingly : a drop the
size of a grain of corn is enough. More than that is esperdício and can cause
irritation .
Replace the toothbrush every three
months , the average time in which the bristles wear out .
Clean the tongue beyond the teeth .
The pores of the tongue also accumulate leftover food .
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