After 2 yrs of tmj ( bite splint, pt ) i have been told that i may have to have an arthroscopy. worst symptoms are ear - will this solve it?

No guarantees: Your specific situation should be discussed with a doctor who has extensive training and experience in this area. We can't answer such a general question as you posed. Besides, no doctor should guarantee success and can only recommend treatment. Perhaps you should consult at least one other expert in this field before making any final decisions.

TMJ Athrocentesis: It should, but no guarantee. Perhaps ask your oral and maxillofacial surgeon if an arthrocentesis could also be a first-line invasive attempt to improve your symptoms prior to committing to an arthroscopy. Many solid studies have demonstrated equal post-op benefits for this less invasive in-office procedure vs. Arthroscopy, dermal grafts, etc. I have had many patients significantly improve.

Probably: Arhroscopy works well in most appropriately selected TMJ patients who have failed other treatments.

Go conservative: Arthroscopy has little effect on the TMJ and are successful in reducing symptoms in about 70% of patients. Non invasive, non surgical and conservative and more predictable treatment is recommended. See OFP specialist for consultation.

It May: If you have been in splint therapy for 2 years and are not progressing, you may want to explore other options. Depending upon the diagnosis after a thorough exam and studies, arthrocentesis and/or arthroscopy may decrease or provide relief of your symptoms. Schedule a consultation with an oral surgeon.