Your body is healing. Not a coincidence I have the same improvements and a few more.
My gums were bad and now are much healthier.
Mental Clairty: I see things now in movies I missed before. Kinda like watching it again for the first time.
The mental clarity is great, I used to crash everyday around 3pm and feel like I needed a nap lol. I think the teeth thing is real, probably something about sugars and bacteria growth in your mouth. I noticed my teeth are much cleaner feeling when I wake up then pre-keto.