Quick question, and maybe there are dentists who are Trek lovers and will know. In "Wink Of An Eye", there is the strange buzzing sound heard when the aliens, in their super fast accelerated form, are near the crew. I heard this exact sound one day while visiting the dentist with a loved one. Since the loved one had an emergency, I failed to ask the dentist what it was. I could hear it being used in one of the patient rooms, but not the one where my loved one went. It doesn't seem to be a drill or dental filler as I've checked just about all of the online sounds in that regard and have failed to come across it. Some audio savvy folks say that it might be a dental polisher or grinder of some type. Thank you!