Hi FuddieDuddies - I have had two fills using flouro. The 1st one I had the dr used x-ray to find my port. Yes it is barium - you really don't have to drink that much and it is so cool watching it go down. My fills are done in the x-ray room at the hospital. There are chairs outside of the room to wait if the kids are old enough. My fills only take about 10 minutes.
Good luck, it really is quick and painless.
Carrie