Hydroxyapatite formation on alkali-treated titanium with different content of Na+ in the surface layer

Jonášová, Lenka; Müller, Frank A.; Helebrant, Aleš; Strnad, Jakub; Greil, Peter

doi:10.1016/s0142-9612(02)00043-1

Cited by 124 publications

(44 citation statements)

References 16 publications

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“…Five acidic conditioning protocols were selected including treatment with 5M H 3 PO 4 (code: E), Piranha solution (code: F), and a mixture of oxalic and hydrochloric acid (code: G). [15][16][17] One modification combined Piranha solution with a subsequent silanization step (code: H) using a 2% methacryloxymethyltriethoxy-silane linker (ABCR, Karlsruhe, Germany) in a anhydrous toluene solution. 20 The silanized zirconia specimens were stored in silanization solution for 24 h prior to the bonding procedure.…”

Section: Methodsmentioning

confidence: 99%

“…10 Several surface bioactivation approaches have been reported from research on bone implants which promote direct bone ongrowth and cell attachment onto bioactive surfaces. [15][16][17] Acid or base treatments of zirconia surfaces have been examined under variation of time and temperature in order to clean and increase the implant surface and to further deposit functional groups such as amino or hydroxyl groups onto the surface. 16 Treatment with 15M NaOH or 5M H 3 PO 4 , for example, has been shown to highly increase the hydroxyl density on a zirconia/alumina nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hydroxylation of dental zirconia surfaces: Characterization and bonding potential

et al. 2008

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Bioinert zirconia surfaces exhibit a low chemical bonding potential to resin-based luting agents. The aim was to hydroxylate dental zirconia surfaces and to examine tensile bond strength using commercial luting agents. The measured bond strength was compared with established mechanical conditioning techniques. Five acidic and one alkaline hydroxylation pretreatments were applied and compared with air abrasion and tribochemical silica coating. For the chemical characterization of hydroxyl groups and hydroxyl value, zirconia powders were used, chemically modified, and analyzed using Fourier-transformed infrared spectroscopy and a titrimetric method according to the ISO 4629 standard. All acidic pretreatment procedures exhibited increased hydroxyl values. The highest values were recorded after treatment with phosphoric acid or Piranha solution. Tensile bond strength was examined in a universal testing machine using the commercial dual-cure luting agents Multilink (Ivoclar, Liechtenstein) and Panavia F2.0 (Kuraray, Japan). Surface hydroxylation with Piranha solution in combination with the luting agent Multilink led to a bond strength of 12.47 +/- 3.25 MPa. Tribochemical silica-coated/silanized zirconia surfaces with Multilink produced the highest bond strength of 19.33 +/- 3.65 MPa. Using the luting agent Panavia F2.0, statistically homogenous values for the untreated (11.60 +/- 1.68 MPa) and for the hydroxylated surface (12.46 +/- 3,81 MPa) were measured. Bioinert zirconia surfaces were successfully hydroxylated in terms of tensile bond strength. Resin bonding with Multilink can be strongly increased by acidic treatment with Piranha solution. Bonding with Panavia F2.0 is not affected by hydroxylation, which is likely due to the incorporation of specific functional monomers.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydroxylation of dental zirconia surfaces: Characterization and bonding potential

et al. 2008

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“…Since Kim and Kokubo et al introduced the alkali and heat treatment to improve the bioactivity of titanium and its alloys, many researchers have further investigated the mechanism and optimized the treatment process for better bioactivity [99][100][101][102][103][104][105][106]. Lee et al [92] investigated the bioactivity and surface changes on surface treated Ti-In-Nb-Ta and commercial Ti-6Al-4V ELI alloys by in vitro tests using simulated body fluids.…”

Section: Alkali Treatmentmentioning

confidence: 99%

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

Liu

Chu

Ding

2004

Materials Science and Engineering: R: Reports

3,032

1,477

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Titanium and titanium alloys are widely used in biomedical devices and components, especially as hard tissue replacements as well as in cardiac and cardiovascular applications, because of their desirable properties, such as relatively low modulus, good fatigue strength, formability, machinability, corrosion resistance, and biocompatibility. However, titanium and its alloys cannot meet all of the clinical requirements. Therefore, in order to improve the biological, chemical, and mechanical properties, surface modification is often performed. This article reviews the various surface modification technologies pertaining to titanium and titanium alloys including mechanical treatment, thermal spraying, sol-gel, chemical and electrochemical treatment, and ion implantation from the perspective of biomedical engineering. Recent work has shown that the wear resistance, corrosion resistance, and biological properties of titanium and titanium alloys can be improved selectively using the appropriate surface treatment techniques while the desirable bulk attributes of the materials are retained. The proper surface treatment expands the use of titanium and titanium alloys in the biomedical fields. Some of the recent applications are also discussed in this paper. #

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“…Effect of the sodium content on apatite-forming ability of the NaOH-treated Ti metal has been studied by Jonášová et al 2) for the Ti metals not subjected to heat treatment. These Ti metals give only low scratch resistance and are difficult to be used clinically.…”

Section: Introductionmentioning

confidence: 99%

Apatite formation on surface titanate layer with different Na content on Ti metal

Kawai

Kizuki

Takadama

et al. 2010

J. Ceram. Soc. Japan

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It was early shown that Ti metal spontaneously bonds to living bone through an apatite layer formed on its surface in the living body, when it was subjected to NaOH and heat treatment to form a sodium titanate on its surface. This kind of bioactive Ti metal was applied to artificial hip joint and already clinically used in Japan. During the study of fabrication process of the hip joint, it was found that sodium content of the surface layer of the Ti metal is largely varied with washing condition after the NaOH treatment, and that apatite-forming ability of the NaOH-and heat-treated Ti metal is liable to decrease in humid environment for a long period. In the present study, the sodium content of the surface layer of the Ti metal was systematically changed by water or HCl treatment after NaOH treatment. Effect of the sodium content of the surface layer on apatiteforming ability in a simulated body fluid and its stability in humid environment of the NaOH-and heat-treated Ti metal were investigated. As a result, it was found that the NaOH-and heat-treated Ti metal gives high and stable apatite-forming ability, when the Ti metal was treated with water after the NaOH treatment to remove partially sodium ions in the surface layer, and subjected to heat treatment.

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Hydroxyapatite formation on alkali-treated titanium with different content of Na+ in the surface layer

Cited by 124 publications

References 16 publications

Hydroxylation of dental zirconia surfaces: Characterization and bonding potential

Hydroxylation of dental zirconia surfaces: Characterization and bonding potential

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

Apatite formation on surface titanate layer with different Na content on Ti metal

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