Only when I get cold. Although I have always ground my teeth when sleeping.

Thank you Phil. This disease , has day today unpredictability.

You are more than welcome. It is indeed my great pleasure. I did go through a season of chattering teeth where I would bite my mouth and lip, eventually it passed. Unfortunately I can't give you a reason.

Here is my reply in detail, I hope you find it helpful (minus jokes) Yes

Thank you Phil.