A little over a year ago I had a root canal done on my lower right molar (end tooth) because of major pain when pressure was applied. Very sensitive to temperatures. Dentist felt it needed a root canal - he was very conservative in getting to that point. I got the RC and a crown on the tooth. I was fine up until now. Every time I apply pressure to that tooth - It is very painful. In addition I do NOT have sensitivity whatsoever. Can someone tell me if they think I may have cracked tooth syndrome - and if so, do I need my tooth pulled (ow!)

Or better yet and idea?

Thanks.