I was a smoker for over 20 years at 2.5 PAD. Most of the time it was full flavor filter cigs, many times I smoked non-filters. It made my teeth have a yellowish tint over the years. I have also had some nicotine stains. When I was a smoker, I remember all those doctors and dentists and anti-smoking zealots who would tell me that one of the benefits of quitting cigarettes is that your teeth will get whiter. But after over 2 years of vaping and no cigarettes, I noticed that my teeth don't seem any whiter. The slight yellowing is still there. Pretty much the same. It doesn't bother me as I am not a vain person even slightly, but it just came to my mind today. HOWEVER, I have noticed that the nicotine stains on the backsides of my teeth are gone. The few I have on my crowns are not, though. So I'm just wondering if any of you veteran vapers out there who've been vaping and not smoking for 2 years or more, have your teeth gotten whiter (without the use of whitener products or dentist procedures, of course)?