Please help. How to resolve this pain?

What does tapping pain on that tooth indicates? Biting on it on the bite paper hurts. What does it indicates? What is the treatment for the tapping pain tooth ? I have constant burning pain in lower jaw under ear, neck for more than 6 months. Went to dentist and he suspect a tooth root fracture#46. He want me to extract it. That tooth was sensitive and hurts to bite on bite paper and tapping. He took CBCT and suspect fracture from it. I went to Endo and he couldn't see the fracture. X-rays were normal. He did cold and bite test. That tooth was sensitive and hurts to bite on one spot and sensitive to cold spray.So the Endo said rct. I did rct 2 months back.Still same symptoms in jaw and neck. Had temporary crown 3 weeks back and permanent crown last week. The same symptoms still. Along with burning pain in jaw and neck,I have constant sore pain in that tooth#46 and gum since this crown placed. Went back to dentist,he tapped on that tooth and it was painful.he want me to extract it now.