Implants made with a 3D printer
To find out how reliable medical implants and auxiliary materials from a 3D printer really are, specimens (implants, medical guides and regular-geometry objects) made of various materials and using various procedures were produced and thoroughly examined. One of the tests consisted in investigating a dental drilling guide produced by additive manufacturing for the drilling of holes to fit dental implants. Such guides are used in such surgical interventions to prevent adjacent dental roots or nervous tissue from being damaged. In cooperation with a dental surgery, medical physicists and dental technicians, several dental drilling guides produced by additive manufacturing were used to drill holes for implants into lifelike artificial jaw models. Subsequently, the drilling depth and the drilling angle were determined by means of industrial computed tomography. The results have shown that the drilling depth differed by less than 2 mm, and the drilling angles by less than 6°. If the deviations are kept that small, no physical damage to the patient is to be expected.