“…The most frequently identified inciting or risk factors reported in humans are the administration of certain systemic medications (e.g., bisphosphonates, denosumab, steroids), osteomyelitis due to odontogenic infection, oral surgery (e.g., extractions, orthognathic surgery, etc. ), and radiation therapy to the head and neck ( 1 , 3 , 8 , 13 , 14 ). Other possible inciting causes include neoplasia, direct chemical toxicity (e.g., formocresol), and systemic toxicity (e.g., exposure to industrial phosphorus and radium) ( 1 , 3 , 9 ).…”