In this article we dealt with the development of a new method of chemical etching on dental implant materials, Grade 2 and Grade 5 titanium. Certain process creates reproducible homogenous and microrough surface, furthermore improves the reproducibility and productivity for industry appliance. During the research we modified the surface roughness of 2 mm thick samples in a single step of acid etching with a mixture of HF, HNO3and distilled water varying the etching time (15-600 seconds). After the surface treatment we obtained the changes of mass and the surface roughness on both sides of every sample. The resulting surface was examined with stereo-and electron microscopy. Based on our results we can determine a parameter setting where the homogenous and microrough surface is reproducible.
We studied treatments to the surface of titanium implant materials, specifically 2 mm thick Grade 2 and Grade 5 titanium discs. The discs were subjected to two consecutive surface treatment procedures, chemical etching and electropolishing. For chemical etching we investigated changes in reaction time on the surface, while in electropolishing we looked at the electric-current density and the reaction time. As a result of our research we determined the optimal parameters for surface treatment by chemical etching, taking into account both the amounts of material lost and its surface grain. After completion of surface treatment, we examined the titanium discs with both optical microscopy (stereo and metal-microscope) and electron microscopy. We established that with an etching solution containing 9 V/V % hydrogen-fluoride, 12 V/V % nitric acid and distilled water at 30°C, a chemical etching time of 30 seconds is optimal. The optimal electropolishing parameter combination we found to be 180 seconds polishing time, minus 30°C temperature, and a voltage of 20 volts.
Tooth replacement by titanium implants has emerged during the last decade, but unfortunately the number of implant-associated infections is also increasing. The growing resistance of bacteria to antibacterial medicines exacerbates the problem that necessitates the development of alternative solutions. The most common implant materials in dentistry are titanium alloys so the goal of our study was to develop titanium-oxide nanostructures on the surface of titanium implant materials that may impede the attachment of contagious bacteria on the surface. In our experiments three different type of titanium discs were subjected to anodic oxidation. We investigated the effect of voltage (10-200 V) on the surface pattern of emerging TiO 2. We examined the surfaces by scanning electron microscopy (SEM) and atomic force microscopy (AFM). After surface characterization the discs were subjected to bacterial contamination study. We observed lattice-like nano-structures parallel with the plane of the titanium disc. We found fewer bacteria on these surfaces than on the chemical etched. The parallel TiO 2 nanophase topography may exhibit particular characteristics in terms of chemical and biological activity that could open up new opportunities in nanosurface research.
In recent years the number of titanium dental implants in use has significantly increased. At the same time bacterial infection of implants has become more common. The goal of our study was to develop a titanium-dioxide layer on the surface of titanium implant materials by anodisation with a view to impeding the attachment of contagious bacteria. In our experiments Grade 2 titanium and nanograin Grade 2 titanium discs were subjected to anodisation. We investigated the effect of voltage on the surface pattern of emerging titanium-dioxide. We examined the surfaces by reflected-light microscopy. We found that the value of the applied voltage and variation in grain size affected the thickness of the formed titanium-dioxide layer. These layers may promote or support desired forms of biological activity, such as cell attachment to integrate with bone.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.