Vaping and Oral Health: Can Dentists Tell You Vape? Can Dentists Tell If You Vape? Smile Stories How Dentists Can Tell If You Vape: Oral Health Effects Can a Dentist Tell If You Smoke? Can your dentist tell if you vape? The answer is YES! Here's how we know: Dry mouth Leads to more plaque & cavities Inflamed gums Nicotine reduces The three tell tale signs your social vaping habit is damaging your body before you feel it according to a dentist