On Invisalingn Teen There Are Little Blue Dots, if one Falls Out, What Should One Do?

The dots do not affect or alter treatment in any way, it is merely to show if the aligners are being worn.  In the past, teenagers were not very compliant, but would insist that they wore their aligners and Invisalign "just doesn't work."  It wasn't that it doesn't work, it doesn't work if the aligners aren't worn.

The blue dots fade with use, which proves that they are being worn (no tricking the dentists THIS time...!).

Since you will be seeing your Dentist soon for your new aligners, let her/him know at your next visit.  This is not an emergency, you did nothing wrong.  In fact, it likely indicates that you are wearing your aligners a lot!  No worries and enjoy your new smile!

The blue dots simply show if the patient is wearing the aligners adequately.  Don't worry about them, they do not affect your treatment ... but DO wear the aligners the required number of hours each day.  Inadequate aligner wear is the most common reason Invisalign does not work out as planned.