Characteristics and biological responses of novel coatings containing strontium by micro-arc oxidation

Kung, Kuan Chen; Lee, Tzer Min; Chen, Jia Lin; Lui, Truan-Sheng

doi:10.1016/j.surfcoat.2010.05.018

Cited by 31 publications

(21 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Cellular behavior is greatly influenced by surface properties such as hydrophobicity, roughness, texture, and morphology. Specifically in the case of bone tissue, several studies using in vitro and in vivo assays, showed that rough surfaces produce better bone fixation than smooth surfaces, indicating that surface roughness has a direct effect on osteoblast attachment, proliferation and differentiation [44,45].…”

Section: Discussionmentioning

confidence: 99%

Osseointegration improvement by plasma electrolytic oxidation of modified titanium alloys surfaces

Echeverry‐Rendón

Galvis

Giraldo

et al. 2015

J Mater Sci: Mater Med

View full text Add to dashboard Cite

Titanium (Ti) is a material frequently used in orthopedic applications, due to its good mechanical properties and high corrosion resistance. However, formation of a non-adherent fibrous tissue between material and bone drastically could affect the osseointegration process and, therefore, the mechanical stability of the implant. Modifications of topography and configuration of the tissue/ material interface is one of the mechanisms to improve that process by manipulating parameters such as morphology and roughness. There are different techniques that can be used to modify the titanium surface; plasma electrolytic oxidation (PEO) is one of those alternatives, which consists of obtaining porous anodic coatings by controlling parameters such as voltage, current, anodizing solution and time of the reaction. From all of the above factors, and based on previous studies that demonstrated that bone cells sense substrates features to grow new tissue, in this work commercially pure Ti (c.p Ti) and Ti6Al4V alloy samples were modified at their surface by PEO in different anodizing solutions composed of H2SO4 and H3PO4 mixtures. Treated surfaces were characterized and used as platforms to grow osteoblasts; subsequently, cell behavior parameters like adhesion, proliferation and differentiation were also studied. Although the results showed no significant differences in proliferation, differentiation and cell biological activity, overall results showed an important influence of topography of the modified surfaces compared with polished untreated surfaces. Finally, this study offers an alternative protocol to modify surfaces of Ti and their alloys in a controlled and reproducible way in which biocompatibility of the material is not compromised and osseointegration would be improved.

show abstract

Section: Discussionmentioning

confidence: 99%

Osseointegration improvement by plasma electrolytic oxidation of modified titanium alloys surfaces

Echeverry‐Rendón

Galvis

Giraldo

et al. 2015

J Mater Sci: Mater Med

View full text Add to dashboard Cite

show abstract

“…As shown in Table 1, the MAO specimens are denoted as CP, CPS1, CPS5, and CPS10 in accordance with the preparation of experimental materials formed by strontium content in electrolyte, respectively. The characteristics of the MAO coatings are summarized in Table 2 [7]. For heat treatment, the specimens were heated at temperatures of 400-800 • C, respectively with a heating rate of 5 • C min −1 and then held for 2 h.…”

Section: Preparation Of Specimens and Post-heat Treatmentmentioning

confidence: 99%

“…Besides, an advantage of MAO method is to form uniformly porous oxide coatings on implant surfaces with complex geometries. However, it has been recognized that MAO coatings containing strontium have an amorphous phase [7]. An appropriate thermal treatment could enhance crystallization because amorphous calcium phosphate is thermodynamically metastable [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on microstructures and mechanical behavior of porous Sr–Ca–P coatings on titanium

Kung

Yuan

Lee

et al. 2012

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

“…The MAO coatings firmly bond to the substrate and exhibit a superior adaptability to the complex shape surfaces [20]. Besides, it is a simple, environmental friendly and controllable method used at room temperature compared with other techniques [18,20]. Furthermore, MAO provides an effective method to form coatings on the surface of substrates with desirable properties by adjusting the electrolytic compositions and synthesis parameters, namely anodic voltage (V anodic ), cathodic voltage (V cathodic ), frequency, time, and electrolyte concentration.…”

Section: Introductionmentioning

confidence: 99%

Characterization of ZrO2 ceramic coatings on ZrH1.8 prepared in different electrolytes by micro-arc oxidation

et al. 2015

View full text Add to dashboard Cite

ZrO 2 ceramic coatings were directly prepared on the surface of ZrH 1.8 in silicate and phosphate electrolytes by micro-arc oxidation (MAO) technique, respectively. The microstructure, chemical composition and phase composition of ZrO 2 ceramic coatings were investigated by X-ray diffraction (XRD), energy-dispersive spectrometry (EDS) and scanning electron microscopy (SEM). The anti-permeation effect was measured by means of vacuum dehydrogenation experiment. It is found that the coating fabricated in phosphate electrolyte is more compact than that in silicate electrolyte. The coatings fabricated on the surface of ZrH 1.8 are composed of M-ZrO 2 , T-ZrO 2 and C-ZrO 2 . EDS analysis indicates that the coatings are mainly composed of O and Zr. Vacuum dehydrogenation experiment shows that the permeation reduction factor (PRF) of coating prepared in phosphate electrolyte is superior to that in the silicate electrolyte, and the PRF value reaches up to 11.2, which can enhance the resistance effect of hydrogen significantly.

show abstract

Characteristics and biological responses of novel coatings containing strontium by micro-arc oxidation

Cited by 31 publications

References 32 publications

Osseointegration improvement by plasma electrolytic oxidation of modified titanium alloys surfaces

Osseointegration improvement by plasma electrolytic oxidation of modified titanium alloys surfaces

Effect of heat treatment on microstructures and mechanical behavior of porous Sr–Ca–P coatings on titanium

Characterization of ZrO2 ceramic coatings on ZrH1.8 prepared in different electrolytes by micro-arc oxidation

Contact Info

Product

Resources

About