I feel for you a dentist visit is horrible, and I have experience I had my molars filled so many times until they were no longer savable so I had to pull them out, I now have only 20 teeth. I tried to save one once with a root canal, it was expensive and the experience was horrible, try having a rubber mask over your face for over one hour I thought I was going to have a heart attack, and to make matters worse the job was not done right, the tooth decayed completely and I still had to pull it out, talk about a waste of money.