iv never had an xray fill iv heard others mention them thoLike Mazza says ... Everyone varies. I was taken to 7mils in my 14 mil band on my first fill (up from the 1.5 mils which were in the band from the op). It was done under X-ray so the surgeon could view the effect immediately. Just a teeny prick feeling with no pain really. Over and done before I knew it. Good luck