Abstracts Book - IMRC 2018

• SB6-P013
DEVELOPMENT OF MULTIFUNCTIONAL DENTAL IMPLANTS WITH
SUPERIOR ANTIBACTERIAL PERFORMANCES
Vanessa Montaño Machado 1 , Graciela Morales 2 , Diego Mantovani 1
1 Université Laval, Dept. of Min-Met-Materials Eng, Canada. 2 Centro de Investigación en Química
Aplicada - CIQA , Síntesis de Polímeros, Mexico.
Modern dentistry works hard in the research of new solutions for the
restauration of the functions and the quality of life of patients who have lost
teeth. Dental implants made mainly in titanium are used nowadays.
Unfortunately, there are still some clinical complications, mostly induced by
bacterial infections, in the short or long term, which can induce mass loss of
bone and the failure of the implant. In addition, current titanium dental implants
still have a risk of corrosion. Hence, it is essential to develop dental implants that
will allow an optimal integration with the surrounding tissues while preventing
bacterial infections. The original approach of the present work consists in the
use of 3D printing for the production of new implants based on a polymeric
resin, poly(ether ether ketone) (PEEK), known for its suitable biocompatibility
and mechanical properties for dental applications. In order to limit the bacterial
infections, as well as the strong stresses induced on the bone, PEEK was loaded
with zinc oxide at concentrations of 1 and 3%. Moreover, the external surface,
the one most exposed to friction and wear, was coated with a resistant diamondlike
carbon (DLC) layer, doped with silver to provide additional antibacterial
protection. The successful synthesis of ZnO nanoparticles was first confirmed by
Fourier Transformed Infrared (FTIR) and X-ray Diffraction (XRD). Modified PEEK
with ZnO was further characterized via FTIR, XRD, Differential Scanning
Calorimetry (DSC), Thermogravimetric analysis (TGA) and melt fluid index (MFI).
These techniques showed both the presence of the nanoparticles and their
effect in the PEEK matrices, preserving their relevant properties for dental
applications. The presence of the DLC-Ag coating on PEEK-ZnO materials was
confirmed by X-Ray Photoelectron Spectroscopy (XPS) and water contact angle
measurements. Preliminary biological and mechanical tests have showed
promising results for such materials in dental applications.