Dentistry Vaping & your mouth: what you might notice at home If you vape, watch out for: Bleeding when brushing or flossing Persistent bad breath Tooth sensitivity Study of vaping shows that vaping has rapid effects on oral health far worse than smoking The Australian Vapers Lips Girl smokes a wipe, her lips have red lipstick. Black background. Close up A woman says vaping took an unexpected toll, leaving her with black teeth and a dental ordeal she never saw coming.