Calcium phosphate coatings elaborated by the soaking process on titanium dental implants: Surface preparation, processing and physical–chemical characterization

Pierre, Camille; Bertrand, Ghislaine; Rey, Christian; Benhamou, Olivier; Combes, Christèle

doi:10.1016/j.dental.2018.10.005

Cited by 44 publications

(35 citation statements)

References 31 publications

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“…However, the bio-inertness of Ti alloys leads to an extended osseointegration time with bone. In order to overcome this limitation, surface treatment technologies can be used to attain bioactive surfaces on Ti substrates [ 40 , 41 , 42 , 43 ]. The macro-scale, micro-scale, and nano-scale morphology of the implant surfaces have a crucial influence on the early bone formation and fixation [ 16 , 44 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

Multi-Scale Surface Treatments of Titanium Implants for Rapid Osseointegration: A Review

et al. 2020

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The propose of this review was to summarize the advances in multi-scale surface technology of titanium implants to accelerate the osseointegration process. The several multi-scaled methods used for improving wettability, roughness, and bioactivity of implant surfaces are reviewed. In addition, macro-scale methods (e.g., 3D printing (3DP) and laser surface texturing (LST)), micro-scale (e.g., grit-blasting, acid-etching, and Sand-blasted, Large-grit, and Acid-etching (SLA)) and nano-scale methods (e.g., plasma-spraying and anodization) are also discussed, and these surfaces are known to have favorable properties in clinical applications. Functionalized coatings with organic and non-organic loadings suggest good prospects for the future of modern biotechnology. Nevertheless, because of high cost and low clinical validation, these partial coatings have not been commercially available so far. A large number of in vitro and in vivo investigations are necessary in order to obtain in-depth exploration about the efficiency of functional implant surfaces. The prospective titanium implants should possess the optimum chemistry, bionic characteristics, and standardized modern topographies to achieve rapid osseointegration.

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Section: Introductionmentioning

confidence: 99%

Multi-Scale Surface Treatments of Titanium Implants for Rapid Osseointegration: A Review

et al. 2020

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“…In connection with the above disadvantages of titanium alloys and the increasing necessity for the quality of implant materials, there is a need for improving the tribological characteristics, as well as the degree of osseointegration of orthopedic products made from this material. One of the possible ways in which to solve the problems mentioned above is the formation on the surface of a titanium implant of a functional coating possessing a required set of characteristics [11][12][13][14][15][16]. Today, there are several ways to form biocompatible and/or bioactive coatings on implants by deposition of the hydroxyapatite or other calcium phosphates on their surface.…”

Section: Introductionmentioning

confidence: 99%

“…However, taking into account the composition of the thermal oxide layer, the biocompatibility of this coating remains in question. In this regard, considerable attention is currently being paid to methods for forming coatings containing calcium phosphate compounds [12,[23][24][25]. Among these methods, plasma electrolytic oxidation (PEO) can be distinguished, which allows one, due to varying the electrolyte composition and formation modes, to significantly change the composition and structure of the synthesized surface layer [26][27][28][29][30][31][32][33][34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Bioactive Coatings Formed on Titanium by Plasma Electrolytic Oxidation: Composition and Properties

et al. 2020

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Bioactive coatings on VT1-0 commercially pure titanium were formed by the plasma electrolytic oxidation (PEO). A study of the morphological features of coatings was carried out using scanning electron microscopy. A composition of formed coatings was investigated using energy-dispersive spectroscopy and X-ray diffractometry analysis. It was shown that PEO-coatings have calcium phosphate in their composition, which increases the bioactivity of the surface layer. Electrochemical properties of the samples were studied by potentiondynamic polarization and electrochemical impedance spectroscopy in different physiological media: simulated body fluid and minimum essential medium. The data of electrochemical studies indicate more than 15 times decrease in the corrosion current density for the sample with coating (5.0 × 10−9 A/cm2) as compared to the bare titanium (7.7 × 10−8 A/cm2). The formed PEO-layers have elastoplastic properties close to human bone (12–30 GPa) and a lower friction coefficient in comparison with bare metal. The wettability of PEO-layers increased. The contact angle for formed coatings reduced by more than 60° in comparison with bare metal (from 73° for titanium to 8° for PEO-coating). Such an increase in surface hydrophilicity contributes to the greater biocompatibility of the formed coating in comparison with commercially pure titanium. PEO can be prospective as a method for improving titanium surface bioactivity.

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“…These bands described above for PCL have greater intensity for the sample PCL/CP/CNT 0.0 g/L, intensity that decreases as the amount of carbon nanotubes increases. The bands at 956 cm −1 and 590 cm −1 are related with stretching (v 1 P-O) and the vibration of O-P-O(H) bending mode of the calcium phosphates respectively [24][25][26][27][28][29] . The band at 956 cm −1 is also related with stretching ν − ( C COO) of PCL.…”

Section: Characterization Of Mwcnt/cp Powdersmentioning

confidence: 99%

Functional evaluation and testing of a newly developed Teleost’s Fish Otolith derived biocomposite coating for healthcare

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et al. 2020

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Polymers such as polycaprolactone (PCL) possess biodegradability, biocompatibility and affinitywith other organic media that makes them suitable for biomedical applications. in this work, a novel biocomposite coating was synthesised by mixing pcL with layers of calcium phosphate (hydroxyapatite, brushite and monetite) from a biomineral called otolith extracted from Teleost fish (Plagioscion Squamosissimus) and multiwalled carbon nanotubes in different concentrations (0.5, 1.0 and 1.5 g/L). The biocomposite coating was deposited on an osteosynthesis material Ti6Al4V by spin coating and various tests such as fourier transformation infrared spectroscopy (ftiR), Raman spectroscopy, scanning electron microscopy (SeM), transmission electron microscopy (teM), scratch tests, Mtt reduction cytotoxicity, HoS cell bioactivity (human osteosarcoma) by alkaline phosphatase (ALP) and fluorescence microscopy were performed to comprehensively evaluate the newly developed biocoating. it was found that an increase in the concentration of carbon nanotube induced microstructural phase changes of calcium phosphate (cp) leading to the formation of brushite, monetite and hydroxyapatite. While we discovered that an increase in the concentration of carbon nanotube generally improves the adhesion of the coating with the substrate, a certain threshold exists such that the best deposition surfaces were obtained as PCL/CP/CNT 0.0 g/L and PCL/CP/CNT 0.5 g/L.Metallic biomaterials used in implantology are usually inert, since there is no ion active exchange. This property allows the cells to recognize the microenvironment, proliferate and differentiate in a better way. For this reason, biocompatible materials in coatings such as calcium ceramics with a chemical nature like bone, or natural or synthetic polymers allows easy incorporation of bioactive materials or active ingredients making the recovery of hard tissue faster.One of the widely used polymers in tissue engineering is polycaprolactone (PCL -poly ε-caprolactone). It possesses semi-crystalline state, hydrophobic character, good solubility, low melting point, adequate degradation rate and excellent compatibility 1-3 , making it a good candidate for use as a biocoating material. One drawback as with many other polymers that the PCL has is its low mechanical strength which is proposed to be modified in this paper via addition of functionalised multiwalled carbon nanotubes (MWCNT) (Fig. 1). Recently, it has been shown that PCL and carbon nanotubes can forms an interface that improves certain properties in the composite 4 . Besides, carbon nanotubes can be functionalized, allowing other molecules to be adhered to the walls and ends, improving the properties of the materials. This strategy has been widely used to incorporate calcium phosphates (CP) like hydroxyapatite 5-7 , CaCO 3 2 or polymers for applications such as cancer treatment, drug transport, biotechnological applications and energy [8][9][10] . As Surmenev et al. indicate, much of the in vitro results of inorganic Ca-P coatings show...

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Calcium phosphate coatings elaborated by the soaking process on titanium dental implants: Surface preparation, processing and physical–chemical characterization

Cited by 44 publications

References 31 publications

Multi-Scale Surface Treatments of Titanium Implants for Rapid Osseointegration: A Review

Multi-Scale Surface Treatments of Titanium Implants for Rapid Osseointegration: A Review

Bioactive Coatings Formed on Titanium by Plasma Electrolytic Oxidation: Composition and Properties

Functional evaluation and testing of a newly developed Teleost’s Fish Otolith derived biocomposite coating for healthcare

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