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THE EIGHTEENTH CENTURY
827
Looseness ot the teeth, which in old age nia\ he considered a normal
condition, is al\va\s a disease when it occurs in \outh. In certain cases
its cause is unknown, in others it depends on an affection of the gums,
either ot a scorbutic nature or consequent on an accumulation of tartar.
Fu;. 100
An instrument especially destined to extract loose bicuspid teetli. The screw in the
interior of the instrument allowed the hook to be brouuht to just the n^hi point in each
case (Campani).
According to Bell, dental caries is generally owing to a bad condition
of the humors of the entire bodv and to a peculiar morbid disposition,
