, don't chew gum when others can see it. IMO it is one of the worst habits a person can choose to have. I don't know when it happened but at some point I began reacting with extreme repulsion to gum-chewers, especially females. Listerine-type mouthwash can dry out your mouth because of the alcohol. Similarly, alcoholic drinks can do the same, and if the alcohol happens to be from Guinness, then your tongue will become a peat bog for the growth of nasty smelly bacteria. Also, almost all toothpastes include an ingredient called Sodium Lauryl (or Laureth, can't remember) Sulfate (SLS). This is a detergent that is also in your shampoo, and all the good it does is make your toothpaste foamy. However, it also dries out your mouth and may exacerbate mouth irritations. There is a toothpaste and mouthwash called Biotene. A little more expensive but it is one of the only ones that doesn't have SLS, and the mouthwash is very pleasant and doesn't burn your mouth. It promotes healthy bacteria, the kind your mouth is supposed to have. Even knowing this, I am addicted to Listerine. I brush my teeth and tongue, use Listerine, then use the Biotene mouthwash if my mouth feels dry. Usually I skip the Biotene mouthwash, though. Remember to keep well hydrated.
J/A/S/O/N makes toothpaste without SLS. SLS exacerbates canker sores, by the way.