When you have dry mouth, you need extra protection for your mouth and teeth with products that are formulated to be gentle. Dry mouth can lower your mouth's pH level creating an environment that will allow bacteria to grow that cause cavities and bad breath. Biotene Fresh Mint Toothpaste is specially formulated to be gentle and non-irritating. Plus, it has a pH similar to natural saliva and contains fluoride to strengthen teeth and protect against decay.