In more good news and bad news:

Good news: The teeth pieces that broke in two have been re-joined with super glue.

Bad news: Trying to wipe off the excess with tissue paper resulted in residue. Initially removing some of this residue, some more of the paint on the teeth solid cast chipped off. It has to be re-painted now no matter what.

I don't have the appropriate paint. What I had available where I re-joined the teeth was only acrylic spray paint, not brushable liquid paint. Really hoping the person that stepped up to fix the mask borders will step up again to paint the teeth.