Having had trigeminl neuralgia for 6 yrs, I feel like somewhat an expert. I have not had any trouble with dental work since there is always numbing. I took several forms of medication but the only one that had much effect was Tegretol. However, you have to be careful and have regular blood work to make sure your body isn't retaining too much Tegretol. I had surgery in early Oct. and have had NO PAIN since then. The initial recuperation was a bit unpleasent but the results are worth all the discomfort.