The sugar factor. Sucrose, most familiar to us as
granulated sugar, is the leading cause of tooth decay, but it is far
from the only culprit. Although sugary foods, including cookies,
candies, and sodas, are major offenders, starchy foods (such as breads
and cereals) also play an important part in tooth decay. When starches
mix with amylase, an enzyme in saliva, the result is an acid bath that
erodes the enamel and makes teeth more susceptible to decay. If starchy
foods linger in the mouth, the acid bath is prolonged, and the potential
for damage is all the greater.
Be careful when eating dried fruits. Dried fruits can have an adverse
effect on teeth, because they are high in sugar and cling to the teeth.
Even unsweetened fruit juices can contribute to tooth decay — they are
acidic and contain relatively high levels of simple sugars.
