The dental students at our school wear scrubs all the time from day 1. What's more, they're color-coded by class, so you can instantly tell what class someone is in by what shade their scrubs are. Sounds dumb, but it's actually pretty cool. And you can tell they're dentals instead of nurses or something else because they have the dental insignia on their breast pocket and on their butt. I have never before acquired so much information by checking out someone's rear.