
What is ONJ or Osteonecrosis of the Jaw?
Osteonecrosis of the jaw (ONJ) is a rare condition where the bone of the lower or upper jaw becomes exposed (usually because of tooth extractions)
American Bone Health has closed. However, on October 1, 2023, we joined forces with the Bone Health and Osteoporosis Foundation (BHOF) so that BHOF could continue offering all of the important programs and services created by American Bone Health. Please visit www.bonehealthandosteoporosis.

Osteonecrosis of the jaw (ONJ) is a rare condition where the bone of the lower or upper jaw becomes exposed (usually because of tooth extractions)
From the American Dental Association The reported incidence of medication-related osteonecrosis of the jaw (MRONJ) varies, but it is generally considered to be between 1%
The American Bone Health Fracture Risk Calculator™ estimates fracture risk for women and men over age 45.