To get a better understanding of how Invisalign actually works, it’s important to compare it to traditional braces.
When a patient undergoes treatment with traditional braces, a series of metal brackets are attached to each one of their teeth. A metal wire then attaches those brackets together and the tensile strength of that wire is what “shifts” the teeth into the desired position over long periods of time.
Contrast this with Invisalign, which involves a series of 3D scans and measurements being taken of the patient’s teeth. That information is then used to create a series of clear plastic trays, each in a slightly different shape than the next. Every few weeks, a patient will switch out one set of aligners for the next and that is what will slowly shift the teeth into the desired position.