Kids usually begin losing their primary teeth from around 6 years old. From 6-12 years, kids have a blend of adult and also primary teeth. By about 12 years, most kids have all their adult teeth with the exception of the 3rd molars (wisdom teeth). There are 32 grown-up teeth. If your child's primary teeth came late, the adult teeth will most likely be late too. If you're concerned concerning kids dentist as well as your youngster's teeth development, see your dental expert.