Q. hi, i hope you can give me some advice as i dont seem to be getting anywhere with my dentist. i had an abcess in my top right molar ( the first big one) the dentist drained it and put antibiotics in it, and temp filling til i can get the tooth taken out. i was still getting pain in the cheek area but i also have TMJ, which is why i can not have root canal as its hard for me to keep my mouth open for long periods of time. i have been referd for IV sedation as i am a nervous patient and im a little worried on how this will be, but also my wisdom tooth on that side is grinding on my bottom molar, and causeing a dull ache, my dentist said its a dead tooth and i have a cross bite, what does this mean? im 34 and never had a problem with my teeth til 3 months ago.,