Is it dental issue or non dental?

I have been dealing with right lower jaw pain under the ear and side of the neck for 10 months now. Went to multiple doctors and dentists. No relief yet. Constant burning and sore pain in the jaw and neck. Have 2 lump spots which is same in size, tender to touch.had CT neck scan and normal results. Went to dentist in May'20 to check lower jaw pain. He took x-rays and cbct. Suspected tooth root fracture in 46 and want to extract immediately. Went to Endo. No fracture spotted. Tooth #46 hurts for tapping and biting on bite stick. Told to do Rct. Did RCT and crown. Still same symptoms in lower jaw under ear and neck along with tapping and biting pain on tooth#46(now crown). Dentist still suspect there might be a root fracture. He also say that root fractures won't cause jaw, neck pain and lumps. He told me to check all teeth occlusion now to get braces/invisalign. OMFS said it's MPDS and bruxism issue. Told to do physical therapy. Dentist and OMFS are against mouth guards.crown adjusted.