The first step is a consultation with your dentist. If we determine Invisalign is a good option for you, we take custom impressions, x-rays and photographic images of your teeth. Invisalign uses these impressions and pictures to create a 3-D image of them, which your dentist and Invisalign use to map out a precise progress plan. This plan is used to create a completely custom set of liners, changed every two weeks.