It starts with a set of photos to see where your teeth stand. This helps dentists and orthodontists get a handle on the location of your teeth, if they are rotated, and identifying problem areas with overcrowding, irregular bites, as well as gaps. The pictures will also allow an Invisalign professional to identify how your jawline sits. Some of the photos will be done just by you smiling, others with be done with a camera inserted inside your mouth, or aided by wearing a large mouthpiece to keep your lips open and out of the way.