At an age when many graduates are just beginning their careers, 22-year-old Connor Gibson is already changing lives with technology. The Tennessee engineer has taught himself dentistry and 3D printing to provide free dentures to Americans who cannot afford them.

At just 22, Connor Gibson is doing something he never dreamed possible: Using his engineering skills to 3D print dentures for America’s most vulnerable people — and giving them…

At an age when many graduates are just beginning their careers, 22-year-old Connor Gibson is already changing lives with technology. The Tennessee engineer has taught himself…