Abstract

Self-organized TiO2 nanotube layer has been formed on titanium screws with complex geometry, which are used as dental implants. TiO2 nanotubes film was grown by potentiostatic anodizing in H3PO4 and HF aqueous solution. During anodizing, the titanium screws were mounted on a rotating apparatus to produce a uniform structure both on the peaks and on the valleys of the threads. X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray (EDX) and electrochemical characterization were used to evaluate the layer, chemical composition and electrochemical properties of the samples. Aging in Hank’s solution of both untreated and nanotubes covered screw, showed that: (i) samples are covered by an amorphous oxide layer, (ii) the nanotubes increases the corrosion resistance of the implant, and (iii) the presence of the nanotubes catalyses the formation of chemical compounds containing Ca and P.

Highlights

  • Titania (TiO2 ) nanostructures, such as nanowires, nanofibers, nanorods, nanoribbons, nanoplates and nanotubes, are widely studied materials due to their unique properties in optics, electronics, photochemistry and biology finding applications in photovoltaic cells, photocatalysis, and sensors [1,2,3,4,5].materials with well-ordered nanostructure are of considerable interest for application in molecular filtration, drug delivery and tissue engineering [6,7,8]

  • The insufficient new bone formation is observed due to necrosis of hard and soft tissues that result in the implant loosening and subsequent failure [11,12]

  • The aim of the present work was to form a uniform distribution of TiO2 nanotubes, by using a relatively simple experimental set-up, on specimens with complex geometry, such as a titanium

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Summary

Introduction

Titania (TiO2 ) nanostructures, such as nanowires, nanofibers, nanorods, nanoribbons, nanoplates and nanotubes, are widely studied materials due to their unique properties in optics, electronics, photochemistry and biology finding applications in photovoltaic cells, photocatalysis, and sensors [1,2,3,4,5].materials with well-ordered nanostructure are of considerable interest for application in molecular filtration, drug delivery and tissue engineering [6,7,8]. Titania (TiO2 ) nanostructures, such as nanowires, nanofibers, nanorods, nanoribbons, nanoplates and nanotubes, are widely studied materials due to their unique properties in optics, electronics, photochemistry and biology finding applications in photovoltaic cells, photocatalysis, and sensors [1,2,3,4,5]. The insufficient new bone formation is observed due to necrosis of hard and soft tissues that result in the implant loosening and subsequent failure [11,12]. The titanium implant surface shape and chemical composition have been studied to enhance osseointegration, decrease necrosis and prevent inflammation [13,14,15,16,17,18,19,20,21]

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