Most of them, but not neccessarily all of them. Each child develops at a different pace.
a child grinding her teeth couls be due to many factors. Some of which can include pain in tooth as a result of a cavity. Jaw pain. general frustration can cause a child to grind their teeth. Source: I am a dentist
Parents are supposed to have 32 permanent teeth. (Children have 20.)
20 teeths
20
20
28
22
A man do not have milk teeth. A child have them.
32 permanent teeth http://en.wikipedia.org/wiki/Tooth#Human_teeth
20
I have lost 15 teeth and i am 10 im sure you are supposed to loose 20 i have 5 more to go i have 2 loose
it happened to me when I was a child. It was just one line on many of my teeth. They disappeared as mysteriously as they appeared.