I recently quit. A couple of things helped me. I used to vape regularly but switched to nicotine gum. The chewing gum started rotting the tooth I had it sitting on when I was chewing. I pretty much never have significant teeth issues. I looked into it and turns out nicotine is used as a pesticide and does rot the teeth. They use it as a pesticide to kill bugs you can google this. I try not to use nicotine now. If I do I swish peroxide immediately after then gargle water to and spit to get the peroxide off. But yeah it's a pesticide that is used to kill bugs. Never heard that in my entire life and I know all sorts of wierd Ripley's Believe It Or Not level factoids.