Gum and mints both assist to stimulate saliva flow, which helps to clean the mouth. However, I would prefer sugar-free gum to mints in general. If you have a history of temporomandibular joint difficulties, sugar-free mints are a preferable option. The gelatin in mints can cause issues for some people. The best choice depends on your situation. If you're healthy and just want something fun to chew, go with gum. It'll get your blood pumping and may even help you feel less anxious and more energized. If you'd like something more serious but don't want to put anything toxic in your body, mints are the way to go. They have similar benefits as gum but without the extra calories and sugar content.