Kids generally begin shedding their primary teeth from around 6 years old. From 6-12 years, kids have a mix of grown-up as well as baby teeth. By around 12 years, the majority of children have all their adult teeth besides the third molars (wisdom teeth). There are 32 grown-up teeth. If your youngster's primary teeth came late, the adult teeth will possibly be late also. If you're concerned regarding kids dentist and your youngster's teeth growth, see your dentist.