I have had pain near maxillary 2nd molar on left side. Xray showed a large circular space, like an abcess superimposed over the sinus. I have been in bad pain, taking advil 5 times a day. I had o go to soft diet and had horrible headache, TMJ soreness, pain if I touched my max sinus. I wanted the tooth out, since I had a previous rootcanal and crown. I am a dental hygienist. Today the pain is gone with the tooth and I ate more and no advil for 6 hours. The sinus is sore to touch and TMJ still has limited opening. I use a cpap and my left nostril has been dripping for days. I wonder if this is a sinus problem, not tooth. Looks that way now. How can you do a differiental diagnosis?
Thanks,
Donna T