Developmental Diseases of the Jaw Bones
Facial Hemiatropy :
Here one side of the face is underdeveloped, leading to an asymmetrical appearance. The tongue on the affected side is heavily shrunk. The roots of the teeth are unusually small and sometimes may lead to premature exfoliation or falling off.
An unusual disease that affects all bones in the body, but shows a strong affinity for the jaws is the Paget's disease. This disease is not strictly developmental in nature, but genetic predilection cannot be ruled out.