My dentist wanted all 4 of my wisdom tooth out about 30 years ago. They were all lying sideways beneath the gum line. He took X-rays, and said he was fine taking out the lower ones, but he didn’t want to touch the pair on top. He was convinced that he would break into the sinuses, and he felt there was a high probability of damaging the facial nerve as a ‘bonus’. Breaking into the sinuses apparently one of the things oral surgeons really don’t want to have happen, it is apparently nothing but trouble if it happens. As he put it, the teeth aren’t causing any problems today, and as long as they don’t cause any problems my advice is not to touch them. 30 years later I still have them, and they have never been a problem. As for the lowers, he cut them up to get them out, but one was especially difficult. He ended up having to pack it to stop the bleeding, and frankly that one hurt for some time. In any case anytime someone you are paying to do something, tells you not to do it, it is probably good advice. If they stand to make money from doing, and don’t want too, there must be a reason.