I am dealing with the same thing. I have visited the dentist and hygenist. They said not to worry. But really gave no answer for this problem. It is on my enamel only on the lower front teeth near the gumline. It looks like mold and is aweful. I am a very clean person. I take care of myself. I eat healthy and really just want some sort of answer to why this is happening. Please.

what does it mean when there is green on your gums???

My girlfriend is dealing with this problem. I was afraid her teath were rotting. still trying to get her into a dentest. in the mean time, im having her brush twice a day and rince with Dr Thwatrens antiseptic mouthwash.

I have the same thing – its only shown up over the past couple of years near cleaning time. One Dentist was very curious and a little rude towards me. I admitted I was overdue by a few months and had gray plaque on my bottom teeth near the gums on the inside of my mouth. He reassured me twice, that it was green – said he’d never seen anything like it. He thought it might be the NyQuil medicine I was taking or the mouthwash I was using that was green. He recommended a non-green mouthwash and it still showed up again 6 months later, but only towards the end of the 6 months. My new dentist mentioned it, said it could be something Im eating, reacting with my saliva or my body chemistry may be changing as I grow older, as I assured her this has never happened before. I liked her bedside manner much better and accept this answer. Its embarrassing enough to have ‘dirty’ teeth, but to have the color be GREEN? Awful.. good luck.