Suspected tooth fracture. Extract/crown?

Have lower jaw pain under ear, neck pain since may. Went to dentist,he suspect a tooth fracture in lower first molar#46.he sent me to Endo.he couldn't spot any tooth fracture,said that tooth is sensitive to bite/cold. I waited till September if it improves.Still the same pain symptoms,my dentist told me to do RCT.I had rct done 7 weeks back.Still same symptoms.dentist still suspect I have a tooth fracture.I went for core and temporary crown work this week.Told me to come after 3 weeks for permanent crown.I don't know for sure if I have tooth fracture.Still have same symptoms.constant burning pain in neck and lower jaw under ear.Can I do permanent crown?How to know if I have tooth fracture? I have very sore pain on the gum,tooth on that area after temp crown work. Is this normal or because of fracture?do I need extraction?x-rays normal.dentist took CBCT,suspect a root fracture from it.this pain after core and temp crown is normal? I have very sore pain and tenderness in that gum&tooth.