Defination: Fractures of the middle third of the facial skeleton
and/or the mandible are known as ‘maxillofacial skeletal injuries’.
How can we classify the facial skeleton?
The facial skeleton is divided into three parts:
1. Upper third—formed by the frontal bone.
2. Middle third—from the frontal bone to the level of upper teeth, or upper alveolus if patient is edentulous.
3. The lower third—the mandible.