Usually milk teeth are replaced by permanent at the age of 12-13 years. Formation of the permanent dentition is completed by 15-18 years. But in some situation milk teeth was already lost, but permanent teeth did not erupted. It may be a symptom of very serious dental disease adentia complete or partial absence o the teeth. This disease requires immediately treatment by the orthodontists in Virginia. First of all they make orthopantomogram. If there is a tooth bud, orthodontist will carry out operation and take this tooth out of the gum. In case of absence of the bud patient requires implantation.