Osteonecrosis (pronounced OSS-tee-oh-ne-KRO-sis) of the jaw is an uncommon condition that involves the loss, or breakdown, of the jaw bone. It can be a serious condition. Symptoms include, but are not limited to:• Pain, swelling, or infection of the gums • Loosening of teeth • Poor healing of the gums • Numbness or the feeling of heaviness in the jaw To diagnose osteonecrosis of the jaw,...