Sensation when brushing

[Anxiety Riddled]

I have this odd sensation when I brush my bottom front teeth. It doesn’t hurt at all but I can feel the brush on my teeth (not gums) when I go left to right and of course my anxiety makes my mind go to “they’re loose” because they almost feel as if they are moving. Is this normal? Asking if it’s normal because I don’t get this sensation in my top front teeth.
I know this is kind of an odd explanation. I don’t know if it’s just sensitivity or what. I don’t have sensitivity to any food or hot/cold, just when I brush..

 

[Gordon]

Your teeth are designed to move a little bit, they're not rigidly held into the bone, think tree swaying in the breeze type thing. Lower incisors have shorter roots and you possibly can feel them moving slightly if you press on them.
It's nothing to worry about.