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of facial trauma such as violence , falls or automobile accidents . maxilla fractures are classified according to the le fort classification . in other animals[ edit ] sometimes (e.g. in bony fish), the maxilla is called "upper maxilla", with the mandible being the "lower maxilla". conversely, in birds
relatively plate-like bones, forming only the sides of the upper jaw, and part of the face, with the premaxilla also forming the lower boundary of the nostrils . however, in mammals, the bones have curved inward, creating the palatine process and thereby also forming part of the roof of the mouth. [ ] birds...
https://en.wikipedia.org/wiki/Maxilla