When I went for a dental appointment and they wanted me to take a full mouth xray, I was not asked to wear one of those vests. There was one on the wall, but it wasn't suggested I wear it. I asked if I needed to wear it and they said I could if I wanted to. So they brought over just one side and put it on one side (front or back of me I do not remember). It all happened so fast and I expect them to have more knowledge than me on these things. What changed? Why do they have them on the wall but then say it's just for if you want it?