I was hoping to go through an Invisalign treatment which was to involve 17 trays top and bottom. I live in Europe and do a lot of travelling - usually last minute. I just found out that I will be in the States for 2 months too and that I will be moving there within the treatment plan, but not sure when. Has any traveller out there gone through this problem? Does it mean that I would have to pay for an initial ortho visit AND pay the monthly Invisalign fee to both my ortho here and to the one where I am visiting? BTW, I am in my 60's and do not want to put this off, so any help with this problem would be greatly appreciated.