Q. I had a crwon put on one of my back teeth about 2 years ago. It has been a little sensitive to temperature over the last 2 years but nothing too terrible. Last night I awoke with a toothache, it kept me awake until I took some ibuprofen. It subsides and I went back to sleep. However, it has been hurting me all day today. It has given me a headche and my jaw hurts. I have taken aspirin this tima and it did not work enough to ease any pain. I have just signed up for new dental insurance that will kick in in January but I don’t know if I can subdue tha pain for one month. What do you think it could be?