Help stain on one of my teeth
I have this really bad stain on just one of my teeth. t is a ugly brown stain right on my front tooth that everone see. I really want it to be removed and I have been brushing with baking soda. I am just wondering how long should it take to whiten out for me to see a difference? I have been brushing with baking soda now a little over a week and the stain is still there as big as day.