Can The Dentist Tell If You Vape? Let's talk about a real problem with our teenagers:VAPING! Parents: Please discuss the dangers of vaping with your children teens.Discuss the repercussions both medically and legally.Check your kids belongings. Have an honest conversation Things your dentist can tell by looking in your mouth If you vape: A dentist may be able to tell if you vape by looking at the condition of your Can Dentist Tell If You Vape Can your dentist tell if you vape? The answer is YES! Here's how we know: Dry mouth Leads to more plaque & cavities