Tribological characteristics of dental metal biomaterials

Abstract

The paper is a report of the examination of the tribological wear characteristics of certain dental metal biomaterials. In the study, tests were undertaken on the following materials: 316L steel, NiCrMo alloy, technically pure titanium (ASTM-grade 2) and Ti6Al4V ELI alloy (ASTM-grade 5). The tribological tests were performed in artificial saliva to determine the coefficient of friction and wear factor; the traces of wear were then ascertained through SEM. The significance of variations in the wear factor, was subsequently assessed by the U Mann-Whitney test. The resistance to wear in the ball-on-disc test under in vitro conditions was observed for the tested materials in the following order: NiCrMo>316L>Ti6Al4V>Ti grade 2.

Adhesion and Mechanical Properties of TiAlN and AlTiN Magnetron Sputtered Coatings Deposited on the DMSL Titanium Alloy Substrate

“…Consideration of thin films such as deposited TiAlN and AlTiN on DMLS (direct metal laser sintered) titanium-based implants is a new biomedical trend. So far, according to the literature abrasive wear has been one of the most frequent causes of biomaterials damage [1]. This mechanism of wear leads to reduced implant life and an increased number of necessary revision treatments.…”

“…Moreover, they intensify pain and negative biological response of tissues which leads to local irritation and inflammation and consequently, to implant failure. Titanium and its alloys are very popular in medicine although the cobalt based and nickel based alloys are still applicable as a biomaterials [1][2][3][4][5][6][7]. Unfortunately, titanium alloys have insufficient abrasion resistance.…”

Effect of Atmospheric Plasma Sprayed TiO2-10% NiAl Cermet Coating Thickness on Cavitation Erosion, Sliding and Abrasive Wear Resistance

“…The total test distance was equal to 300 m and it was used to record the friction coefficient and procedure of sliding test results evaluation. The computation of wear factor is described in [21,22]. The worn samples wear traces were assessed with a scanning electron microscope Phenom Pro-X (15 kV, BSE detector and SEM-topo mode, Phenom-World), using a stereoscope microscope (Nikon SMZ 1500, Nikon Corporation), by means of a Contour GT profilometer (manufactured by Bruker, Germany).…”

Tribocorrosion Behaviour of Ti6Al4V Produced by Selective Laser Melting for Dental Implants

“…It is possible to conclude from the lack of significant contrast between SE and BSE mode, that the surface is uniformly coated with the passive and protective TiO 2 layer after the reciprocating sliding tests have occurred where depassivation happens due to the rubbing process. According to Walczak et al [29], one would expect more pronounced ridging from the increased β phase since the plasticity of the β phase is higher than that of α phase, which, in turn, leads to a local increase in plastic deformation. However, it appears to be very similar to each other, especially as the SLM can be having significantly lesser β phase than their traditional counterpart.…”