Investigation of the Effectiveness of Dental Implant Osseointegration Characterized by Different Surface Types

Abstract

Different surfaces were obtained by Plasma Electrolytic Oxidation (PEO) of the Ti-6Al-4V alloy; followed by hydrothermal treatment (HT). The surfaces were studied by scanning electron microscopy (SEM); Energy Dispersive Spectroscopy (EDS); X-ray Diffraction (XRD); Brunauer-Emmett-Teller (BET) absorption and abrasion wear tests. The resulting surface contains hydroxyapatite (HA); which contributes to superior implant osseointegration. Treated implants were introduced into rabbits and their osseointegration was studied after two and six months. It was established that implant surface area increases due to pore formation. Pore formation and hydroxyapatite on the surface of the implant qualitatively change contact osseogenesis processes with reduced duration of osseointegration of implants. The treatment of the surface of the implants by the combination of PEO and HT provided better results in the medico-biological investigations than PEO alone. Abrasion tests demonstrated that the HA will be preserved after the procedure of implantation; ensuring effective osseointegration.

Influence of Calcium Acetate Concentration in Electrolyte on Tribocorrosion Behaviour of MAO Treated Titanium

“…Regarding corrosion behaviour, studies show that oxide layers obtained by MAO confer about a one to two decade decrease in corrosion kinetics compared to their Ti or Ti alloy base materials, together with a substantial increase in corrosion potential [7,[13][14][15][16]. On the other hand, biological behaviour studies have shown that MAO layers can have improved cell adhesion, proliferation, and differentiation, as well as antimicrobial properties [4,6,7,[17][18][19][20][21]. Several reports are also available on the tribocorrosion behaviour; however, most of them only report on the evolution of open circuit potential under sliding action, without considering the corrosion kinetics, whereas very little is known about the evolution of kinetics during mechanical action [22,23].…”

Comparative Adsorption of Tungsten and Silicon Oxides by Alumina Matrix

“…[4] In water solutions, anionic compounds facilitate the formation of barrier oxide films, which is a prerequisite for the occurrence of spark discharges on the metal surface and the subsequent formation of solid and well-bonded oxide coatings. [5] The embedding of anionic components into oxide films and some further post-treatment of coatings, for example, hydrothermal treatment, [6,7] and addition of antibacterial agents (silver nanoparticles) [8] allows to obtain biologically active layers. The combined use of various anionic and dispersed additives allows to obtain coatings of different composition with catalytic, [9] decorative [10] und dielectric [11] properties.…”