Evaluation and characterization of an innovative treated zirconia as an alternative for Neoporos ® titanium used in implantology

Reference	Presenter	Authors (Institution)	Abstract
02-071	Rúbia Eri Teruya	Teruya, R.E.(Universidade Federal do Paraná); Guimarães Castro, C.(Neodent); Marino, C.E.(Federal University of Paraná);	High strength ceramics, such as yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP), have a great emphasis in the area of implantology due to its mechanical, chemical and physical properties, that meeting some needs of titanium dental implants. In order to improve the surface roughness and consequently the osseointegration process, titanium and Y-TZP materials undergoes to surface treatment. The purpose of the present study is to obtain, evaluate and characterize smooth and rough surfaces of Y-TZP (injected discs and injected discs with sandblasted and acid etching treatments, respectively) and to compare them with already consecrated and commercial surfaces of titanium discs with smooth surface (after machining process) and with Neoporos® surface treatment, sandblasted and subsequent acid etching (Neodent, Curtiba, Brazil). The Y-TZP discs were injected and their surface treatment was performed at Straumann (Basel, Switzerland), while the titanium discs were machined and their surface treatment was performed at Neodent (Curitiba, Brazil). Qualitative and quantitative analysis of the roughness surface and static contact angle were performed in these materials. The treated surfaces topography presented macropores, characterized by the sandblasting and micropores, by the acid etching. The Y-TZP treated discs presented approximately the double average roughness than the titanium discs with Neoporos® surface treatment, which is approximately 1.0 µm, with reference commercial value around 1.3 µm. Regardless the roughness values, the surfaces were characterized as hydrophobic in all conditions. Zirconia is emerging slowly as one of the materials that can replace the gold standard of titanium implants, mainly because it is better in the mouth aesthetics, and these results show that zirconia surfaces quite similar to superficial properties of commercial titanium.
<< Back