I do not have occlusion in one side of my crown with eating difficulty. How to manage?

Hello doctor,

I am 71 years old and I am in the process of getting major work done throughout my mouth. At the moment, I have only three grinding teeth on my upper. Two on the left and one on the right (numbers 4, 12 and 13). 11 days ago, the dentist reinstalled the crown on number four, but when I left his office there was no contact in number 4. There was only contact (occlusion) on 12 and 13. Of course, it was very difficult eating with only two teeth that had full contact. After a few days, I started to get a lot of pain in my neck and behind my ear and up almost to the top of my head on the side of number 4 (right side) and there was numbness in the area of my jaw joint (in front of my ear). I saw the dentist again four days ago and he added some type of material on top of number 4 to achieve occlusion there. I still have the pain constantly and it is pretty unbearable. 800 mg of Ibuprofen and Aspercreme on the area help me somewhat. I called the dentist and he said that the pain was related to some nerve problems inside the number 4 tooth. I have been thinking maybe there was some damage in my jaw or something because of my jaw having had overwork trying to make on the right side while eating. What do you think?