Is it common to experience facial tingliness as a symptom of tmj/tmd?

Yes, in some cases.: Overuse of the facial muscles from clenching and grinding can sometimes cause facial tingliness. Proper diagnosis is very import to make sure trigeminal neurolgia is ruled out.

Yes: The nerve that supplies the face runs across the upper and lower jaw. Damage to the TMJ joint, could cause inflamation of the nerve leading to a tingling sensation. You should be evaluated my a TMJ specialist.

Also: It could be early signs of a tumor. Consider an evaluation by a orofacial or crainiofacial pain specialist.

Not necessarily: Normally not, but the possibility does exist if there is an imbalance of the teeth, muscles and/or the jaw joints. There is an ailment called trigeminal neuralgia that can also exhibit some of these symptoms and is usually limited to one side of the face.

Not uncommon: Not uncommon. Ask your TMJ doc to confirm.