That thing can hardly be called invisible. I have a retainer similar to that, and unless you're across the room, you can see that weird plastic over your teeth. Not to mention the spit bubbles that collect in it. This thing looks twice as thick as that.
Another thing, it isn't wise to move teeth too quickly. It causes the roots to resorb and you end up with teeny short little roots - not good. That's why ortho takes years because you move the teeth slowly and give the bone time to rebuild behind the movement.
I think this thing sounds like crap. Just like Invisalign.
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