It was a problem for me. I used a moisturizing mouthwash (I forget the name) and sucked on gin-gin candies. The bad news - after doing it for 2 years, several fillings failed (dentist says dry mouth increases this risk.) I had to have 4 crowns in the last 5 years after only having one in my first 70 years.
Please be diligent and ask your dentist for advice. MAC is hard enough without adding tooth issues!