Is tmj cbct is enough or need an MRI?

I have taken cbct scan of tmj and CT scan of neck soft tissue with contrast for my constant Burning and sore pain in the lower jaw under ear and neck. Right side. Have ringing and ear pain too. No infection. Checked with ent. I have a lump spot which is small, hard to touch. Chickpea size. Doesn't change in size since June. Ultrasound neck and ct scan neck doesn't show anything. OMFS said it's Myofascial pain dysfunction and told me to do physical therapy. He didn't review the cbct scan though. Tmj specialist dentist reviewed cbct scan and said I need day and night splint for 4 months. Don't know the exact diagnosis yet. I have pain on one tooth too. #46. Tapping and biting pressure on it. I went to endo, had Rct for the same symptoms. No changes after Rct and crown. Still tapping and biting pressure. Cbct of #46 doesn't show anything. But dentist suspect there might be a tooth root fracture and wanted me to extract it and see if it helps.Does my cbct show anything? should I do PT?