Cool video of creating Invisalign aligners

Ever wondered how Invisalign aligners are made? Watch this cool video that includes 3D mold printing. 3D Systems is the company that makes the equipment for 3D-printing of the customized molds, one for creating each tray in a patient’s treatment plan. At the 4-minute mark in the video, you’ll see a bit about the amazing process called stereolithography that builds the molds layer by layer, using liquid plastic zapped by a computer-controlled laser. They make 40,000 aligners a day!! It’s so Star Trek.

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