Can Dentist Tell if You Vape? A Comprehensive Guide 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 teeth and gums. Vaping can cause dry mouth, which News Can Dentist Tell if You Vape Can Dentist Tell if You Vape? A Comprehensive Guide How to Tell if Cigarettes or Vapes Are Illegal Action on Smoking and Health