Earlier this month a man who was badly injured in a motorcycle accident had 3-D printing facial reconstruction.
Today, there are new findings that show 3-D printing's medical advantages are progressing.
Doctors in the Netherlands say they've successfully replaced part of a human skull with a 3-D printed plastic one.
The 22-year-old woman's skull was thickening, causing her to lose vision, coordination and severe headaches.
Doctors say the surgery likely saved the woman's life.
It's been three months since the procedure and doctors say the woman's pain is gone and she can see again.
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