Osteoconductivity and Hydrophilicity of TiO2Coatings on Ti Substrates Prepared by Different Oxidizing Processes

Yamamoto, Dai; Kawai, Ikki; Kuroda, Kotaro; Ichino, Ryoichi; Okido, Masazumi; Seki, Atsushi

doi:10.1155/2012/495218

Cited by 34 publications

(27 citation statements)

References 30 publications

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“…To show the relationship between R B-I and WCA > 20 (deg. ), our previous in vivo results for TiO 2 -coated samples with Ra/μm < 0.1 are also plotted in the figure [11,13,14]. Each of the hydrothermally treated samples (WCA = 16 (deg.)…”

Section: In Vivo Testmentioning

confidence: 91%

“…An implant's osteoconductivity is usually influenced by its surface characteristics, because the formation of new bone on the implant is an interfacial reaction between the implant and body fluid. Therefore, it is important to modify the surface characteristics to improve the osteoconductivity of Ti, using, for example, hydroxyapatite coatings [1][2][3][4][5][6][7][8] or TiO 2 coatings [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Osteoconductivity of Superhydrophilic Anodized TiO2 Coatings on Ti Treated with Hydrothermal Processes

Yamamoto

Arii²,

Kuroda³

et al. 2013

JBNB

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Surface hydrophilicity is considered to have a strong influence on the biological reactions of bone-substituting materials. However, the influence of a hydrophilic surface on osteoconductivity is not completely clear, especially for superhydrophilic surfaces. In this study, we conferred superhydrophilic properties on anodized TiO 2 coatings using a hydrothermal treatment, and developed a method to maintain this surface until implantation. The osteoconductivity of these coatings was evaluated with in vivo tests. A hydrothermal treatment made the surface of as-anodized samples more hydrophilic, up to a water contact angle of 13 (deg.). Storage in both air and distilled water increased the water contact angle after several days because of the adsorption of hydrocarbon. However, storage in phosphate buffered solution led to a reduction in the water contact angle, because of the adsorption of the inorganic ions in the solution, and the sample retained its high hydrophilicity for a long time. As the water contact angle decreased, the hard tissue formation ratio increased continuously up to 58%, which was about four times higher than the hard tissue formation ratio on as-polished Ti.

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Section: In Vivo Testmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Osteoconductivity of Superhydrophilic Anodized TiO2 Coatings on Ti Treated with Hydrothermal Processes

Yamamoto

Arii²,

Kuroda³

et al. 2013

JBNB

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“…Moreover, passive layers formed on the base of Ti6Al4V ELI alloy show good hydrophilous properties (wetting angle of about 63°). Studies carried out by other authors [43][44][45] showed that such surface layers ensure good osteoconductive properties of the implants.…”

Section: Resultsmentioning

confidence: 91%

Surface Modification Of Implants For Bone Surgery

Marciniak¹,

Szewczenko²,

Kajzer³

2015

Archives of Metallurgy and Materials

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The study discusses the methods of surface modification methods for AISAI 316 L steel and Ti6Al4V ELI titanium alloy, dedicated to complex design implants used in bone surgery. Results of structural tests have been presented along with those evaluating the physicochemical properties of the formed surface layers. Clinical feasibility of the surface layers has also been evaluated.The developed surface modification methods improved the resistance to pitting, crevice and stress corrosion and ensured better biocompatibility. Moreover, the layers formed are marked by plasticity. Results of the tests performed show applicability of the evaluated methods of surface modification in complex shape implants for the clinical use.Keywords: AISI 316L stainless steel, Titanium alloy Ti6Al4V, Surface layer, Corrosion and wear resistance, Biocompatibility.W pracy omówiono metody modyfikacji powierzchni stali AISAI 316 L oraz stopu tytanu Ti6Al4V ELI przeznaczonych na implanty o złożonej konstrukcji stosowanych w chirurgii kostnej. Przedstawiono wyniki badań struktury oraz własności fizykochemicznych wytworzonych warstw wierzchnich. Określono również przydatność wytworzonych warstw do zastosowań klinicznych.Opracowane metody modyfikacji powierzchni zwiększyły odporność na korozję wżerową, szczelinową i naprężeniową oraz poprawiły biokompatybilności. Ponadto wytworzone warstwy cechują się podatnością do odkształceń. Wyniki badań wykazały przydatność zastosowanych metod modyfikowania powierzchni implantów o złożonych kształtach do zastosowań klinicznych.remodeling, ensuring long-term therapeutic effect. An major issue is also the quality of the implant surface layer. Studies carried out by the leading research centres are focusing now on modification of the implant surface with layers or coats adhering well to the metallic base, deformable during preoperative modeling and ensuring plastic, cyclic deformation upon use. The surface of the biomaterial should show high resistance to different types of corrosion (pitting, crevice, stress, wear) as well as biocompatibility. Such properties are ensured by carbon coatings formed on steel AISI 316L implants. The coatings are obtained with the use of a variety of technologies so that consequently their structure and properties may be shaped. We differentiate between hydrogen carbon coatings (a-C:H) and hydrogen free ones (a-C). The latter are obtained through magnetron sputtering, arch sputtering or laser ablation. The carbon coatings, on the other hand, are produced by decomposition of hydrocarbons through PACVD procedures. Depending on the production

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“…Our previous in vivo results for TiO 2 -coated samples with Ra < 0.1 μm are also plotted in the figure [5,6]. Protein Adsorption Figure 5 shows the relationship between WCA and protein adsorption (peptide binding).…”

Section: Surface Characterizationmentioning

confidence: 87%

“…It is thought that the osteoconductivity of implants is usually influenced by surface substances. Several surface coating techniques, such as hydroxyapatite [1], TiO 2 [2][3][4][5][6], etc., have been researched to improve the osteoconductivity of the implant. This research has focused on the surface characteristics of implants or coating films, because the formation of new bone on the implant is an interfacial reaction between the implant and body fluid.…”

Section: Introductionmentioning

confidence: 99%

Formation of Hydrophilic and Hydrophobic Ti Surface Using Hydroprocessing and their Osteoconductivity

Kuroda¹,

Okido²

2016

Proceedings of the 13th World Conference on Titanium

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Surface hydrophilicity is considered to have a strong influence on the biological reactions of bone-substituting materials. However, the influence of a hydrophilic or hydrophobic surface on the osteoconductivity is not completely clear. In this study, we produced super-hydrophilic and hydrophobic surface on Ti and Ti alloys using a hydrothermal treatment at 180 o C for 180 min. in the distilled water. Hydrothermal treated samples were stored in x5 PBS(-). This maintained less than 10 (deg.) in an apparent water contact angle of them. The osteoconductivity of the surface treated samples with several water contact angle was evaluated with a protein (albumin and fibronectin) adsorption and in vivo testing. The water contact angle of around 65 deg. minimized the hard tissue formation and protein adsorption on the samples. And more hydrophilic and hydrophobic surfaces had higher hard tissue formation rate and more protein adsorption with decreasing or increasing the water contact angle. That is to say that the surface properties, especially water contact angle, strongly affected on the osteoconductivity

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Osteoconductivity and Hydrophilicity of TiO₂Coatings on Ti Substrates Prepared by Different Oxidizing Processes

Cited by 34 publications

References 30 publications

Osteoconductivity of Superhydrophilic Anodized TiO<sub>2</sub> Coatings on Ti Treated with Hydrothermal Processes

Osteoconductivity of Superhydrophilic Anodized TiO<sub>2</sub> Coatings on Ti Treated with Hydrothermal Processes

Surface Modification Of Implants For Bone Surgery

Formation of Hydrophilic and Hydrophobic Ti Surface Using Hydroprocessing and their Osteoconductivity

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Osteoconductivity and Hydrophilicity of TiO2Coatings on Ti Substrates Prepared by Different Oxidizing Processes

Cited by 34 publications

References 30 publications

Osteoconductivity of Superhydrophilic Anodized TiO&lt;sub&gt;2&lt;/sub&gt; Coatings on Ti Treated with Hydrothermal Processes

Osteoconductivity of Superhydrophilic Anodized TiO&lt;sub&gt;2&lt;/sub&gt; Coatings on Ti Treated with Hydrothermal Processes

Surface Modification Of Implants For Bone Surgery

Formation of Hydrophilic and Hydrophobic Ti Surface Using Hydroprocessing and their Osteoconductivity

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Product

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Osteoconductivity and Hydrophilicity of TiO₂Coatings on Ti Substrates Prepared by Different Oxidizing Processes

Osteoconductivity of Superhydrophilic Anodized TiO<sub>2</sub> Coatings on Ti Treated with Hydrothermal Processes

Osteoconductivity of Superhydrophilic Anodized TiO<sub>2</sub> Coatings on Ti Treated with Hydrothermal Processes