How many teetch do children have?

[Yin Yang]

I guess the title says it all. I know it's stupid question, but I really don't know. I don't remember from school :LOL
My son is obviously in pain, and I can't tell if it's from teething, because his mouth is already full of teeth.

So how many is there, please? So I know when it ends finally! :

[simonee]

20. On each side, 2 molars, a canine, two incisors. hth