Children with cherubism vary in severity in their maxilla and mandible bony lesions. Cherubism is a rare autosomal dominant disease of the maxilla and mandible. Lesions are more common on the mandible than the maxilla. The mandible is affected more commonly than the maxilla. Mandible and maxilla osteotomies date to the 1940s. Found in near equal frequencies in both maxilla and mandible. Ameloblastomas can be found both in the maxilla and mandible. It may result in expansion and destruction of the maxilla and mandible. These bones are the premaxilla, maxilla, and dentary. This analysis developed standards for the unit length of the maxilla and mandible. Teleosts have a movable maxilla and premaxilla and corresponding modifications in the jaw musculature. Posterior crossbite is often correlated to a narrow maxilla and upper dental arch. Petrels have a plate called the maxillary unguis that forms a hook on the maxilla. It is formed by indentations in the inferior nasal conchae, maxilla and lacrimal bone. The teeth of the dentary were much smaller than those of the maxilla.