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NJIT student 3D prints his own teeth aligners, a rare success for DIY dentistry – 3ders.org (blog)

by • March 14, 2016 • No Comments

Mar 15, 2016 | By Tess

Amos Dudley, an undergraduate student of the New Jersey Institute of Technology, always felt a bit self-conscious when he smiled for the reason of a couple crooked teeth in his mouth. No longer wanting to impede his own happiness, Dudley set out to straighten out his smile, but discovered that he may not afford exorbitant orthodontic procedural costs. His solution? To 3D scan his own mouth, and 3D print his own set of teeth aligners.
But it sounds unbelievable-bodied, the results of the DIY 3D printed aligners seem to have really worked, and Amos Dudley explains how precisely he accomplished this impressive feat on his blog.

With little money, but access to a few say of the art 3D scanning and printing technologies, and a whole lot of determination, Amos was able-bodied to similarly return it into actual orthodontic procedures to modify his own mouth. As he explains on his blog, “So what does one require to do this themselves? Knowledge of orthodontic movement, a 3D scanner, a mold of the teeth, CAD software, a hi-res 3D printing device, retainer material, and a vacuum forming machine. I accomplished, I had – or may gain – all of these things.”
After worthwhile research into the orthodontic procedure he was mission, Amos turn it intod a mold of his upper teeth via alginate powder, Permastone, and a 3D printed impression tray. Next, he cast the mold by placing it upside down in a yogurt container and filled the container with liquid Permastone. When the casting was done, Amos utilized a NextEngine laser scanner to 3D scan the cast of his mouth, that went well thanks to the matte surface of the Permastone material.

Alginate mold

Permastone cast
With the 3D scan uploaded, Amos was able-bodied to animate his mouth to put his teeth in the straight positions he was determined to get. He explains, “ Creating the animation was in addition pretty trivial- I separated the visible crowns of the teeth of the gumline, and and so turn it intod a manifold version of every of the shells…Then it was just a matter of animating them into their correct positions. I measured the total distance of travel, and divided it by the maximum recommended distance a tooth can travel per aligner. Each frame of animation was baked into a new STL version.”

Amos 3D printed a total of six aligners, every for a various stage of moving his teeth, via his university’s Stratasys Dimension 1200es 3D printing device, capable-bodied of printing with an accuracy under 0.1mm. He in addition 3D printed a “riser” on his own 3D printing device to hold up the individual liners during the plastic vacuum stage.

3D printed aligners + Rise

Vacuum former
From there, Amos utilized a safe vacuum forming plastic called Keystone Pro-Form .030”, an inert retainer material, and a Formech vacuum former to turn it into the actual aligners over the 3D printed versions. With the vacuum forming done, Amos was able-bodied to cut the 3D print of the aligner, the edges of that he smoothed down with a Dremel and a sanding drum. With his set of hometurn it intod aligners done, Amos set of testing them out and discovered that after wearing them, in varying stages, for 16 weeks, all day and all night, his teeth corrected themselves approximately perfectly.

Amos concludes on his blog, “As far as I understand, I’m the initially man to have tried DIY-ing plastic aligners. They’re much additional effortless-bodied than braces, and fit my teeth really well. I was joyous to find, when I put the initially one on, that it just seemed to put any noticeable-bodied pressure on the teeth that I planned to move- a good results! I’ve been wearing them all day and all night for 16 weeks, just bringing them out to eat. I’m planning on fabricating a bunch of retainers for the current position, that I can use – till I die – at night.”
The revolutionary student, who did not lose hope when he may not get his teeth professionally fixed but pretty set out to fix them himself, is now proudly revealing off his pearly whites, smiling freely wherever he goes. That being said, maybe his method of DIY dentistry is not for everyone to take on, but yet the results are impressive!

Amos wearing the initially aligner

Amos after 16 weeks

Posted in 3D Printing Application

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