Additive manufacturing, or three-dimensional (3D) printing, joins materials layer-by-layer under the control of a computer to create three-dimensional objects. 3D printing is used in many applications, including the automotive industry, the environment, electronics, airplane engines, agriculture, and even architecture. One of the most critical applications of this ultra-modern technology is medicine. 3D printing permits new methods of surgical planning and tissue regeneration, as well as personalization of medical devices and implants. With the development of materials that are both biocompatible and printable, additive manufacturing is becoming increasingly useful in medicine.