Comment by tstrimple

It may be fun, but it's not a fact. At birth, you likely have all the tooth buds to grow your primary teeth and maybe your permanent molars. Premolar and canine buds typically form during the first year of life. Second molar buds form around age two. Third molar (wisdom teeth) buds don't begin developing until around age five to six and in some folks they don't grow at all.

I have a condition where my lower front permanent teeth never developed. We weren't sure if any of our kids would have the same issue so we discussed it with the dentist. They couldn't tell us if all the permanent teeth were present or developing because there hadn't been enough time for first xrays to show all of the permanent teeth buds growing. Even at age 3.