Hi doctors, The X ray on the left was taken in 2012-09 when I was still in invisalign treatment. The one on the right was taken in 2014-08. I stopped my invisalign treatment since 2014-01 due to a gum surgery. No retention whatsoever since then. My teeth have been shifting slowly. If I’m not mistaken both X rays show the same teeth. It looks like the tip of the roots have become an irregular shape and shorter. Can that happen? Thanks