Keep Your Mouth Free Of Bacteria with Antimicrobial 3D Printing Material


Got a dirty mouth? Let’s say lactobacilli, corynebacteria, satyphylocci and streptococci. Are these bacteria getting at home in your gob?

Fear not!

Because dental researches are creating 3D printed false teeth that causes negative charged bacterial membranes to burst and die.

Lost a tooth?

Worry no more.

Because soon your dentist could print you another - and it will help your mouth clean too.

Andreas Hermann of the University of Groningen and his colleagues took the dental resin polymers that are utilized to print out a range of dental items like replacement teeth implants and orthodontic braces, with the objects hardened using ultraviolet light.

This type antimicrobial plastic can kill 99% of bacteria. It works by means of combining traditional dental resin polymers with antimicrobial ammonium salts. The salts are positively charged, and so disrupt the negatively charged bacterial membranes that cause them to burst and die. Once mixed, it can be put into a 3D printer and used to create orthodontic braces, replacement teeth and more.

“The material can kill bacteria on contact, but on the other hand it’s not harmful to human cells.”  Hermann told.

Further Tests

In tests, once coated in Saliva and streptococcus mutants bacteria that leads to tooth decay, it killed more than 99% of the bacteria unlike just 1% in a control sample without the ammonia salts.

But, the tests were only done over the course of about six days, thus more experiments need to be made to find out how safe it is over the longer term- particularly once used in combination with toothpaste.

More experiments will have to be performed before the material can be rolled out to patients, as the team only left samples in the saliva and bacteria mix for six days.

“For clinical used we need to extend this, and investigate the compatibility with toothpaste,” says Hermann.