Children generally begin shedding their baby teeth from around 6 years old. From 6-12 years, children have a mixture of grown-up and baby teeth. By around 12 years, most children have all their adult teeth except for the third molars (wisdom teeth). There are 32 grown-up teeth. If your youngster's baby teeth came late, the adult teeth will most likely be late also. If you're concerned regarding kids dentist and your youngster's teeth growth, see your dental practitioner.