In addition to using patented SmartTrack technology for its custom-made aligners, Invisalign is supervised by an orthodontic professional and includes in-person appointments to answer your questions and provide guidance and oversight to ensure that the treatment is working as intended.    Many at-home teeth straightening kits do not include in-person orthodontic consultation or supervision, either before, during, or after treatment, so there is no way to know if your treatment is working safely or properly.