<unk>  are an area of dead or dying bone. They are caused by infections, physical trauma, or a dearth of blood flow to that part of the bone. Though they primarily affect the jawbone,<unk>  are able to affect any bone. Jawbone<unk> , also called neuralgia-inducing<unk> l osteonecrosis (NICO) if they are associated with pain, are extraction sites in the jaw that have not healed.
Cavitation 
Edema
Regurgitation 
Atopy
Hydrodilatation
Allostasis
Ventricular remodeling
Angiopathy