Hi Happy Dragon and the subject of dental problems came up at a recent Cancer Support group meeting, a few of the people who have had chemo said their teeth were cracking and decay setting in. Apparently they all suffered with daily vomiting which brings up the acid from your stomach and general immune problems cause the teeth to suffer, I too had a couple of problems there as well even though I am on BCG treatment. We all got referred to our local oral health clinic which costs nothing. Your cancer coordinator should be able to refer you for a check up. Hope this helps and good luck.
Love & Best Wishes
Paul