I'm 16 and I have a dentist appointment later today I smoke 1-2 fags a day though sometimes go days without I've been smoking for 9 months, my mam doesn't know and she is against smoking so I dont want her to find out, I have always had good teeth, my mam comes in the room with me as I have the same appointment as my younger sister, will they be able to tell and if they can will they tell my mam?