So I recently started taking care of my teeth again (couple of months ago). I suffer from depression and anxiety and now in my late 20s is when I'm taking the step to actively care for my teeth. Brushing twice a day with electric toothbrush, just got a scaler to remove any calculus, flossing once a day and mouthwash as well. What has me worried is this weird line going through my 2 front teeth. I noticed it immediately after taking off my first ever whitening strip. It feels kinda fuzzy and rough, and is more visible when I let my teeth dry out. I was wondering if this could be plaque? Any help is appreciated!