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Primary are called the first teeth of a child and
they are sometimes called 'milk' teeth. The primary teeth are 20 : ten
at every jaw.
When a child is born the first teeth are already formed in the jaw although
they can't be seen.
Then
between about six months old - when a baby gets his first tooth - and three
years old, all twenty come through the gums. The first to erupt are the
two upper front teeth.
front incisors 6-12 months
side incisors 9-16 months
canines 16-23 months
front molars 13-19 months
back molars 22-33 months
 MORPHOLOGY
OF PRIMARY TEETH
The primary teeth are 20 : ten at every jaw
8 incisors,
4 canines and
8 primary molars
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