Avaliação das propriedades do PEEK para aplicações odontológicas.

Abstract

In odontology, the dental osseointegrated implants have been the best option for the treatment of total dental loss. These allow a functional and esthetical recovery, such as the ability of chewing. Nowadays, the use of polymers to fabricate osseointegrated implants has been introduced in replacement to the titanium’s conventionals, as for example the polyether ether ketone (PEEK). Therefore, the purpose of this work is to evaluate the properties of polyether ether ketone (PEEK) to use in dental applications, describing it physically, chemically and morphologically, in the use perspective as implant. The samples have been analyzed through a Scanning Transmission Electron Microscope (STEM), Energy Dispersive x-ray Spectroscopy (EDS), X-ray Diffraction, (XRD), Fourier Transform Infrared (FTIR), Differential Scanning Calorimeter (DSC), Wettability by contact Angle. The result of the STEM showed a characteristic of a flat and dense surface material. The EDS displayed the chemical elements oxygen and carbon, typical of a polymer. On the XRD, the PEEK was observed to behave as a semi crystalline material. The spectrums of the FTIR revealed typical bands of PEEK’s absortion. On the thermical analysis by PEEK’s differential scanning calorimeter, it was observed the presence of an endothermic peak in 344,68˚C, initiating approximately with 320˚C and ending in 349˚ C. According to the results, it is verified that the PEEK presents measures of contact angle less that 90˚, indicating hydrophilicity. On the mechanic test, it was perceived that the elastic module and PEEK’s traction resistence is the closest to the bone rather than the titanium. The conclusion therefore is that the PEEK shows compatible properties to be used as a biomaterial.