Before revision: The following bones take part in their formation: Superior margin: frontal bone Inferior margin: maxilla and zygomatic bone Medial margin: frontal bone and maxilla Lateral margin: zygomatic bone and frontal bone Function The orbit holds and protects the eye .
After revision: The following bones take part in their formation: Superior margin: frontal bone Inferior margin: maxilla and zygomatic bone Medial margin: frontal bone and maxilla Lateral margin: zygomatic bone and frontal bone Function The orbit holds and protects the eyes .