[Nickshu]

Originally Posted by Rickysa

That's essentially how it's done...plaster models are sent to the company and they cut off the teeth are rearrange them straighter a little at a time and make a series of plastic trays along the way, which the patient wears in succession as the teeth straighten.

Basically except they scan the stone models and the movements are done digitally in their proprietary software, then the aligners are CAD/CAM milled out of the software.

Some orthodontists have the scanner in their office, so no impressions or stone models are needed, they just scan the teeth directly in your mouth, then upload it to Invisalign.

Again I maintain my opinion and observation that for anything other than minor tooth movement Invisalign (or equivalents out there) does not produce good occlusal (bite) results. Excitement about the technology often overshadows the reality of compromises in the final product/outcome. As with anything with the human body, every case is unique.