Usually by two years old, most of the baby teeth will have erupted (except the second molar). There are 20 baby teeth altogether. In late bloomers, their teeth may be slower to erupt. However, there is also a possibility of congenitally having missing teeth. I would advise you to bring your child to your local dentist to have a look first. There is a high chance that a low dose x-Ray will be needed to check if the teeth are present. Hope that helps. Dr. Justin