Cathodic reactions of electrolytic hydroxyapatite coating on pure titanium

Yen, Shiow‐Kang; Lin, Chih‐Min

doi:10.1016/s0254-0584(01)00562-4

Cited by 113 publications

(63 citation statements)

References 15 publications

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“…Calcium ions are driven to the cathode under the action of the electric field. Cathodic reactions at various voltage polarization curves on pure titanium in the mixed solution of Ca(NO3)2･4H2O and NH4H2PO4 in the potential range of -0.1 to 3V (vs. Ag/AgCl) are as follows [55]:…”

Section: Mechanismmentioning

confidence: 99%

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Electrochemical surface modification of titanium in dentistry

2009

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Titanium and its alloys have good biocompatibility with body cells and tissues and are widely used for implant applications. However, clinical procedures place more stringent and tough requirements on the titanium surface necessitating artificial surface treatments. Among the many methods of titanium surface modification, electrochemical techniques are simple and cheap. Anodic oxidation is the anodic electrochemical technique while electrophoretic and cathodic depositions are the cathodic electrochemical techniques. By anodic oxidation it is possible to obtain desired roughness, porosity and chemical composition of the oxide. Anodic oxidation at high voltages can improve the crystallinity of the oxide. The chief advantage of this technique is doping of the coating of the bath constituents and incorporation of these elements improves the properties of the oxide. Electrophoretic deposition uses hydroxyapatite (HA) powders dispersed in a suitable solvent at a particular pH. Under these operating conditions these particles acquire positive charge and coatings are obtained on the cathodic titanium by applying an external electric field. These coatings require a post-sintering treatment to improve the coating properties. Cathodic deposition is another type of electrochemical method where HA is formed in situ from an electrolyte containing calcium and phosphate ions. It is also possible to alter structure and/or chemistry of the obtained deposit. Nano-grained HA has higher surface energy and greater biological activity and therefore emphasis is being laid to produce these coatings by cathodic deposition.

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Section: Mechanismmentioning

confidence: 99%

“…All these works report the deposition of calcium phosphate on the cathodic titanium surface from baths containing Ca(NO3)2 and NH4H2PO4. Most of the electrolytic deposition is done in acidic calcium phosphate solutions and form brushite at lower current densities [55]. Increasing current densities tend to promote the formation of HA.…”

Section: Mechanismmentioning

confidence: 99%

Electrochemical surface modification of titanium in dentistry

2009

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“…These ionic substitutions are considered to play an important role for the formation and properties of bone. Hydroxyapatite coatings can be produced by different methods [10][11][12][13][14][15][16][17][18][19]. Early attempts used plasma spraying, which however resulted in coatings with adhesion problems.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Hydroxyapatite Deposition on Titanium Oxide Surfaces for Biomedical Application

Xia¹,

Lindahl²,

Lausmaa³

et al. 2011

Advances in Biomimetics

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“…Additionally, corresponding devices for ELD are simple and convenient. Many studies have been developed to analyze the influencing factors of ELD, such as electrolyte, current density, electrolyte temperature and current loading time [11][12][13][14][15][16][17][18][19]. Ban and Maruno [20] reported that apatite coating formed on titanium plates by the ELD method in simulated body fluid (SBF) and discussed the effects of other ions except calcium and phosphorus in SBF on ELD coating.…”

Section: Introductionmentioning

confidence: 99%

Comparison of physical characteristics and cell culture test of hydroxyapatite/collagen composite coating on NiTi SMA: electrochemical deposition and chemically biomimetic growth

Yang

Cai

et al. 2007

Front. Mater. Sci. China

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A hydroxyapatite (HA)/collagen (COL) composite coating on NiTi shape memory alloy (SMA) was prepared by electrochemical deposition (ELD) in modified simulated body fluid (MSBF). To draw comparisons of physical characteristics and bioactivity of the composite coating, the HA/ COL composite coating was also prepared by chemically biomimetic growth (BG) and the ELD coating was re-soaked in MSBF again for further biomimetic growth (called EBG method in this paper). It was indicated that the c-axis of HA crystals was oriented parallel to the longitudinal direction of the COL fibril in BG and EBG coating, which could not found in ELD coating. The EBG method could induce a denser, thicker and better crystallized HA/COL coating. The cell culture test indicated that the BG coating presented better cell biocompatibility.

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Cathodic reactions of electrolytic hydroxyapatite coating on pure titanium

Cited by 113 publications

References 15 publications

Electrochemical surface modification of titanium in dentistry

Electrochemical surface modification of titanium in dentistry

Biomimetic Hydroxyapatite Deposition on Titanium Oxide Surfaces for Biomedical Application

Comparison of physical characteristics and cell culture test of hydroxyapatite/collagen composite coating on NiTi SMA: electrochemical deposition and chemically biomimetic growth

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