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At about six years the first permanent molars come through
at the back right behind the last 'milk' molars. These first permanent
molars are the most important teeth for the correct development of an adult
dentition.
From then until about twelve years old all the primary
teeth loosen and come out and the permanent teeth come through in their
place.Until 13 years the 28 out of 32 teeth will appear. The last tooth
at the back of every side will appear between 17-21 years. That's why they
are called wisdom teeth.
MORPHOLOGY
OF PERMANENT TEETH
Grown-ups have a set of 32 permanent teeth. Sixteen at the
top and sixteen at the bottom jaw :
8 incisors,
4 canines,
8 premolars and
12 molars.
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