I don't like to speek in absolutes, but if they are not going to go below the gums you should be OK. Additionally, uppers in the front are less likely to be an issue. I have had 2 upper wisdom teeth removed and some crowns on the bottom done with no problems. Just make sure your dentist knows what he is doing. I used the oral surgeon that did my jaw resection for the wisdom teeth and my regular dentist did a stint at MSKCC. My only concern would be a surprise if he has to grinds down the teeth for crowns.