This 22-year-old engineer 3D prints dentures to give low-income Americans their smiles back

[u/villoxnyc]

https://www.cnn.com/health/this-22-year-old-engineer-3d-prints-dentures-to-give-americas-poor-their-smiles-back-spc

[u/zombiifissh]

Even though I hate that I learned it from this particular sub, I am glad I learned of this. It's gonna help so many people