wrote in message
...
I had a root canal thingy done to me when I was at Fort Gordon,Georgia
in 1962.I remember walking from one clinic to another clinic in that
building and I had a little piece of plastic sheet or whatever it was
rigged over my mouth that the U.S.Army dentist guy had put on there.

That wasn't a dentist. And that "whatever it was" is called a gag.