This week I finished all the sets of my invisalign treatment! I had 42 sets upper/39 lower. However my teeth are not "perfect" yet, so today I went, the dentist took new impressions. I found it a bit weird, he did not remove any attachments (I had 15 attachments total), nor did he take any xray or any type of scan, all he did he was took the top/bottom impression and the impression me biting. Is that normal? shouldn't the attachment be removed? shouldn't he do an xray to see the teeth position?