Children normally start losing their baby teeth from around 6 years of age. From 6-12 years, kids have a blend of adult and baby teeth. By around 12 years, a lot of children have all their grown-up teeth with the exception of the 3rd molars (wisdom teeth). There are 32 adult teeth. If your child's baby teeth came late, the grown-up teeth will most likely be late too. If you're worried regarding kids dentist and your kid's teeth growth, see your dental professional.