Does It Sound Like I Have A Cracked Tooth?

I have been having teeth problems since October. I've had a root canal on a bottom molar. My upper molar above that tooth (directly above it), it has been bothering me off and on for a year. My DDS took xrays and said that there is a deep cavity there but not likely that it needs a root canal. We're trying to figure out what's going on. I'm going back next Fri for work. I'm trying to figure out if my tooth is cracked. Here's my symptoms: Only one side of the tooth feels sens if I tap on it. That side also has a filling on the corner. The pain does not throb, but aches into my sinuses and down my jaw. It is sens to cold. If I am biting down too hard at times it feels a little pressurized. I have been on antibiotics since Fri so not sure if they're working, or if it's just not an infection. DDS last Thur did not see infection in xray. Any advice out there is appreciated. Any dentists that can help? Thanks so much. Frustrated here. Thanks.

Does It Sound Like I Have A Cracked Tooth?
It does sound like either you filling is cracked and needs to be replaced with a new restoration. Or the entire tooth is cracked. The doctor won't know til he takes out the entire filling that is in there now. Good luck
Reply:First, I would start with the easiest solution, remove the decay and get a new filling. If the doctor can't see an obvious crack, let it go for a while and see if the restoration and antibiotics can help. Sometimes a cracked tooth is very hard to see. Even x-rays don't always help. Take ALL the antibiotics, even if you start to feel better. Worst case scenario, you have to see an oral surgeon to evaluate the tooth. Maybe an extraction, but let your dentist try everything else first. I have had a very similar experience this month. I'm still waiting for my tooth to calm down after an old filling was replaced. Hang in there!
Reply:I suggest you continue the antibiotics because it does sound like a cracked tooth and it may only be a hairline fracture that can only be seen by xrays. Better to get it taken care of right away before it turns into a nasty absess and you wind up losing your tooth. Not fun!! Root canals by the way are not bad at all. Just takes a little longer than a filling.