So glad you found this place. You will get the very best and latest info, plus knowlegeable and compassionate help from people who've been where you are. Sounds like your dentist put you on the right tract to get the biopsy. It is really good to plan ahead and find out as much as possible so that you an ask questions and get the answers you need. It's a good idea if you can have someone go with you to appointments so that you can ask questions and have help remembering what was said. I went to my son's appointments and a couple of times we took his 5-year old daughter with us. I think it helped her to understand and think positive about what was happening to her Daddy. Everybody reacts differently to treatment and some have it easier than others. The waiting room where my son had his Rad Tx was very pleasant with a very nice "cookie lady" who came and talked to everyone, offering them cookies or drinks or to share experiences. A couple of times, a very nice therapy dog came to visit, who had the kindest eyes and only approached anyone if they indicated or showed interest. About the dry mouth, you probably keep water by your bed at night but perhaps a plant mister might help. My son kept one by his bed so that he could spray and moisten his mouth which allowed him to not wake up as much as having to get a drink of water. Do avail yourself of the search functions on this site - it will help in deciding what questions you might have for the doctor at your next appointment. And let us know how you are doing.