Can a cavity in wisdom tooth cause jaw discomfort, ear pain and burning on the mucosa around tooth but no tooth pain. maxilla soreness inside mouth.

Yes: this is likely secondary to nerve irritation. See your dentist asap. May take ibuprofen for pain.

Yes: But so can infections around the tooth, TMJ dysfunction, and an ear infection. This can only be accurately diagnosed with a clinical and visual examination. Make an appt with your dentist and/or an ENT specialist.

Yes.: Yes. For best results with wisdom teeth, make sure you are evaluated and treated by a board certified oral & maxillofacial surgeon.

Wisdom teeth: Yes, it could be TMJ syndrome. You should see a dentist or an Oral surgeon, get some X-rays or/ and a CT scan to properly diagnose and eliminate the wisdom tooth as an issue. In general, With a wisdom tooth decayed, I would get the wisdom tooth out of the way first to eliminate it as a culprit. Stay safe.