I'm curious about the outcome of your kitty's teeth grinding.
My mother's 12 year old cat started grinding her teeth yesterday and has some similarities.

Her last visit to a vet they commented on how healthy her teeth and gums were. We took her to a different vet today and he could not see anything obvious. He gave us antibiotics just in case it's a loose tooth that may get infected, and said if the grinding does not stop in a week or two they would have to do a dental exam under anesthesia and possibly surgical care depending what they find.

We really want to avoid anything invasive if possible.
I have been searching online for information or similar stories for suggestions that may help out.

Thanks! Djaren