phossy jaw

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either the mandible (lower jaw) or the maxilla (upper jaw), two opposing bony structures of the mouth of a vertebrate; they bear the teeth and are used for seizing prey, for biting, or for masticating food. See anatomic Table of Bones in the Appendices.
cleft jaw a cleft between the median nasal and maxillary processes through the alveolus; see also cleft palate. Called also gnathoschisis.
Hapsburg jaw a mandible that is prognathous, often accompanied by Hapsburg lip. See illustration.
Hapsburg jaw with Hapsburg lip.
phossy jaw phosphonecrosis.
A condition caused by chronic occupation-related poisoning by elemental or yellow phosphorus which causes mandibular necrosis, in particular in factories producing yellow/white phosporus-based matches

phos·sy jaw

(fosē jaw)
Phosphorus necrosis of the jaw, caused by overexposure of white phosphorus, which was used in the manufacture of matches until the early 20th century; agent is still used for signaling, filtering, and incendiary purposes.
References in periodicals archive ?
"The odor from the suppurating bone," Andrews explained, "is something that can not be described in words, and is so nauseating that dentists and physicians alike prefer to avoid patients afflicted with advanced cases of 'phossy jaw.'" Surgical removal of one or both jaws, the only known treatment, left victims terribly disfigured.
Because the French government assumed responsibility for paying the health expenses of state workers, its treasury faced a disturbingly high health benefit bill for match workers who fell victim to phossy jaw. In the hopes of cutting costs, state officials subsidized the search for a phosphorus substitute.
Esch of Wisconsin and Miles Dawson, a prominent New York attorney and actuary, to prepare a federal bill that would eradicate phossy jaw. In fact, Andrews had contacted Dawson even before completing his investigation for the Bureau of Labor and asked him to report on the most effective and constitutional means for prohibiting phosphorus matches.(22)
Over the previous year, Andrews had worked hard putting together a compelling case against phossy jaw and against John Huner.
Phossy jaw was a terrible disease, and uniform state legislation probably could not be secured to eradicate it.