Changes in zygomatic arch position following experimental lateral displacement.
In order to obtain information about the stability of augmentation procedures in the area of the zygomatic arch, the zygomatic arch on one side was displaced laterally in eight rhesus monkeys by an osteotomy of the anterior portion of the arch and placement of an 8 mm bone graft obtained from the supraorbital ridge. The other side served as a control. The post-operative changes were studied on submento-vertex head films during a 24 month follow-up period. Three months post-operatively the amount of lateral displacement was reduced by 55%. During the next 9 months of follow-up only small changes occurred in the individual animals, and the mean values remained predominantly unchanged. Between 12 and 24 months the distance from the zygomatic arch to the midline increased with growth. On the control side this distance increased from three months on. At 24 months only 18% of the difference in width that was created by the surgical repositioning remained.
Vargervik
K
K
Farias
M
M
Ousterhout
D
D
D000818:Animals; D016025:Bone Transplantation; D002508:Cephalometry; D005147:Facial Bones / Q000033:anatomy & histology; D005500:Follow-Up Studies; D008253:Macaca mulatta; D010027:Osteotomy; D014945:Wound Healing; D015050:Zygoma / Q000033:anatomy & histology* / Q000502:physiology / Q000601:surgery