Don’t rinse after brushingThe basics of dental health are well established. If you want to rinse, do it before brushing your teeth, while flossing (gently). Messina says that recent trends to encourage charcoal toothpaste could be putting users’ teeth at risk. Rubbing this into your teeth regularly can wear away at your enamel, the protective coating on your teeth. One theory about tooth brushing is that it can be an effective appetite suppressant.