They can probably tell by the way that your gums look, because it would maybe change the texture, color, or size of the gums. I think that there is a certain confidentiality that doctors have to be under, but I am not sure if dentists are considered as doctors in this respect, and if they are under the confidentiality rules.
SmokingPlatypus Reviewed by SmokingPlatypus on . Dentist knowing u smoke Hey i was watching a movie, and this kid's detist looked in this kids mouth and he was like "Does ur mom know u smoke?". Can dentist do that for real?, if they can i'm screwed, i got a dentist appointment coming up. Rating: 5