Written By Dominic Basulto Via Washington Post
The latest 3-D printing innovation could change the way you think about your annual visit to the dentist. That’s because Dutch researchers at the University of Groningen are working on the creation of a 3-D-printed tooth made of an antimicrobial plastic that kills the type of bacteria responsible for tooth decay on contact.
Imagine teeth that remain white and pristine over time, without all the accumulation of bacteria that cause dental problems. While the thought of having a 3-D-printed tooth inside your mouth might not sound so great, is it really any worse than dealing with the constant toothache from a decaying tooth?
For the Dutch researchers, the key step in developing the bacteria-fighting tooth was being able to find the right material to put inside the 3-D printer. In this case, the researchers embedded antimicrobial quaternary ammonium salts inside existing dental resin polymers. Once this mix is put into a 3-D printer, it can be hardened with ultraviolet light and used to print out 3-D replacement teeth.