Children usually start shedding their primary teeth from around 6 years of age. From 6-12 years, kids have a blend of adult as well as baby teeth. By about 12 years, the majority of youngsters have all their adult teeth with the exception of the third molars ( knowledge teeth). There are 32 adult teeth. If your child's baby teeth came late, the grown-up teeth will probably be late too. If you're worried concerning kids dentist as well as your youngster's teeth growth, see your dentist.