I use a waterpik every night with warm water and a small quantity of Crest mouthwash which doesn't contain alcohol. I brush after every meal. Every 3 months my dentist paints on fluoride. More aggressive fluoride can be done every evening before retiring with impression trays and fluoride paste. Fortunately my Advantage plan has $1700 a year benefit for dental work. My radiation and chemo was completed 16 months ago. So far so good tooth wise.