Q. I have radiation induced xerostomia. My dentist tells me that the enamel is nearly gone (almost all of my teeth have been effected). What are my options for treatment. I don’t have cavities YET. It does hurt to chew crunchy foods and sometimes to brush my teeth. I am already using daily flouride trays and floss multiple times a day. My concern is for long range planning. My dentist would like to do a few crowns every year. I don’t want to put that kind of money into my mouth if the crowns aren’t going to last forever. Ideas?