I've lost all but a couple of teeth to progressive onj. i have facial features changes, problems with speech, sinus issues &pain in my face is this onj?

Compromised healing: Dead or necrotic bone in (usually) the lower jaw that doesn't heal normally after oral surgery is the main presenting finding in onj. Persistent exposed bone would certainly present painfully but the source of the pain would be visible. You might want to touch base with another oral surgeon for another opinion. http://www.aaoms.org/docs/position_papers/bronj_update.pdf for more info.

Tooth loss and ONJ: Onj is a result of the jaw's inability to repair itself after either osteoporosis drug or steroid therapy or radiation to the jaws. In the absence of such treatment, your tooth loss is not onj. The underlying cause of most tooth loss is either caries, periodontal disease or abscess, and ascribing tooth loss to onj in the absence of the drugs or radiation is incorrect. An oral surgeon can discuss.