We’ve all woken up in the middle of the night and our mouth feels dry as a desert. Maybe it’s winter and the heat’s turned up, or we have a cold and are breathing through our mouth. This is normal! However, for 1 out of 5 adults, this discomfort is part of their everyday lives. Dry mouth, also known, as "xerostomia", is a condition that can have a serious impact on your dental health.