2. Replacement Jaw
In June 2011, a Dutch woman received a replacement jaw. No big deal you may think, but this mandible was built from scratch by a 3D printer. The process is similar to that of the ODD guitar, with layers of powder - this time titanium - fused together by a laser. The result was a replacement jaw that was incredibly accurate to the patient, lowering her recovery time and saving costs for both her and the hospital.
Link: BBC News