Best dental clinic in Kovilambakkam is Amethyst Dental Clinic in Kovilambakkam : The retrognathic( backward) mandible is occurs due to smaller lower jaw or bigger upper or due to some other syndroms, Which is treated by dental appliance, Orthognathic surgery(jaw corrective surgery) in adult stage , In childhood it could be corrected by Orthopedic appliance or myofacial appliances