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A comment on Invisalign Became the Biggest User of 3D Printers. Parent comment

Re:Invisalign Became the Biggest User of 3D Printers by RealityVoid on Sunday March 22, 2026 @02:17AM (#47474945)
The article says the braces are 2 layers. The inner one is polyester and the outer one is polyurethane. They also don't currently 3d print the braces themselves but instead thermo form them on top of 3d printed molds.
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