3D Printed Teeth Kill Bacteria in the Mouth

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Patients who need a false tooth or dental implant may soon be able to have an antimicrobial 3D printed dental repair, which can prevent oral infections from common bacteria.  Tooth decay has been linked to endocarditis, stroke, diabetes, pneumonia, poor pregnancy outcomes, dementia as well as acclerated deterioration of dental implants and veneers.

Previously, 3D printing has been used to make replacement teeth and dental veneers.  Now Dutch researchers at the University of Groningen have combined standard dental polymer resins with ammonium salts.  The liquid polymer is layered into a mold and hardened with a laser.  When samples of antimicrobial teeth and untreated teeth were both treated with bacteria, the treated teeth killed more...