I noticed yesterday that one of my front teeth is looking a bit discolored. Got a couple light brownish/grey streaks. It seems like it might line up with where I typically hold the tank in my lips. Has anyone else had this problem or heard of it happening to anyone? It's possible that it's unrelated but I figured I'd ask the internet and see what turns up... Thanks.


Maybe it's related to your e juice. Have you tried to change ejuice for a while?