Phossy jaw
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Phossy jaw, formally known as phosphorus necrosis of the jaw, was an occupational disease affecting those who worked with white phosphorus without proper safeguards. It was most commonly seen in worke
Match factory worker with phossy jaw
Archival drawing from the 19th century of phossy jaw
Mandible affected by phossy jaw, 1870 (Sorbonne University)
Sequestrum
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A sequestrum is a piece of dead bone that has become separated during necrosis from normal or sound bone. It is a complication of osteomyelitis.
Phossy jaw
…developed penetrating the oral mucosa with the formation of fistula, tooth loss, and recurrent abscesses. Further progression led to the formation of sequestrum (dead bone that has separated from living bone) after three months and necrosis of the jaw within six months. The distinguishing feature of this disease…
X-ray of a child's femur, showing a bony sequestrum indicated by the blue arrow.