I have been having sinus issues in one side for YEARS I used to smoke so I assumed it was that. I stopped smoking over a year ago and the sinus issues constantly blocked. I’ve had antibiotics and sinus spray which has made no difference. I noticed my tooth was pretty bad so I went to see my dentist assuming he’d remove the tooth. He did a filling and said the cavity was deeper than expected so it took a while to fill. I am still experiencing the same pain in my sinus, ear fullness and sensitivity to cold around that molar. I went back and spoke to him and he said the pain in the upper molar is probably pain from my lower wisdom tooth, he tried to get my to root canal the wisdom tooth but he extracted that 8 days ago and I’m still having the same sensitivity in the molar and sinus pressure. 
My gp keeps sending me to the dentist and the dentist says he can see the inflammation of my sinus on the xray but my tooth cavity isn’t deep enough to be causing it. He also said when he took my wisdom tooth out that it was much more decayed than he thought and was breaking apart when removed so I’m not sure how accurate the X-ray would be to see deep damage? 
I don’t have the dental X-rays but this is what my tooth looked like before I went I see him. 
I just want to get to the bottom of what’s causing this issue for my sinus for so long and no one seems to know anything. Any advice would be greatly appreciated. I had a filling on both molars shown but considering it’s still hurting and my sinus is still inflamed I’m guessing it might not have been done properly or deep enough? 



Sinus issues caused by molar?