Electrophoretic deposition of hydroxyapatite/chitosan nanocomposites: the effect of dispersing agents on the coating properties

Gaafar, M S; Yakout, S.M.; Barakat, Yosry F.; Sharmoukh, Walid

doi:10.1039/d2ra03622c

Cited by 8 publications

(10 citation statements)

References 121 publications

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“…TEA is known, as a mild complexing agent, to increase the dispersibility of hydroxyapatite when forming coatings on metal substrates [ 50 , 51 ]. Figure 3 b clearly shows that the Optrode voltage increases in the presence of TEA.…”

Section: Resultsmentioning

confidence: 99%

Determination of Calcium in Meat Products by Automatic Titration with 1,2-Diaminocyclohexane-N,N,N’,N’-tetraacetic Acid

Shyichuk,

Kowalska,

Shyychuk

et al. 2023

Molecules

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Mechanically separated meat (MSM) is a by-product of the poultry industry that requires routine quality assessment. Calcium content is an indirect indicator of bone debris in MSM but is difficult to determine by EDTA titration due to the poor solubility of calcium phosphate. Therefore, 1,2-diaminocyclohexane-N,N,N’,N’-tetraacetic acid was used instead, which has two orders of magnitude higher affinity for calcium ions. In addition, the auxiliary complexing agents triethanolamine and Arsenazo III, an indicator that is sensitive to low calcium concentrations, were used. Automatic titration endpoint detection was performed using an immersion probe at 660 nm. It has been shown that the color change in Arsenazo III can also be read with an RGB camera. The CDTA titration procedure has been tested on commercial Bologna-type sausages and the results were in line with AAS and ICP reference data. The content of calcium in sausages turned out to be very diverse and weakly correlated with the content of MSM. The tested MSM samples had a wide range of calcium content: from 62 to 2833 ppm. Calcium-rich poultry by-products include fat and skin (115 to 412 ppm), articular cartilage (1069 to 1704 ppm), and tendons (532 to 34,539 ppm). The CDTA titration procedure is fully suitable for small meat processing plants due to its simplicity of use and low cost.

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Section: Resultsmentioning

confidence: 99%

Determination of Calcium in Meat Products by Automatic Titration with 1,2-Diaminocyclohexane-N,N,N’,N’-tetraacetic Acid

Shyichuk,

Kowalska,

Shyychuk

et al. 2023

Molecules

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“…EPD not only ensures a uniform coating but also controls the thickness of the coating [86]. Common coatings applied using EPD include HA, graphene oxide (GO), and Ag [87][88][89][90]. Juliadmi et al [91] used EPD to deposit HA coatings of natural origin onto implant surfaces, resulting in good surface coverage and improved coating performance.…”

Section: Chemical Modificationmentioning

confidence: 99%

Research Progress on the Preparation Process and Material Structure of 3D-Printed Dental Implants and Their Clinical Applications

Gao,

Pan,

Gao

et al. 2024

Coatings

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Additive manufacturing, commonly known as 3D printing technology, has become a prominent topic of research globally in recent years and is playing an increasingly important role in various industries. Particularly within the healthcare sector, the use of 3D printing technology is gaining prominence, with a special focus on the manufacturing and application of dental implants. As research in this field progresses, the preparation methods, material selection, and technological innovations for dental implants are evolving, promising a future where the manufacturing process of dental implants becomes even more refined and efficient. Through thorough research in materials science, it is possible to develop dental implant materials that have better biocompatibility with the human body and improved mechanical properties. Additionally, advancements in surface modification technology can further enhance the strength and stability of the bond between dental implants and bone tissue. These advancements not only expand treatment options for patients but also greatly improve the long-term success rate of dental implants. In the field of dental implants, the success of the implant depends on the interactions between the materials used, the cells involved, and the bone tissue. Therefore, there is an urgent need to explore the molecular mechanisms of such interactions in depth. In this study, we provide a comprehensive review of the application of 3D printing technology in the fabrication of dental implants. This includes an examination of the process methods, surface coating technology, and a comparison of the shapes and structures of different dental implants, along with their advantages and disadvantages. Furthermore, this paper analyzes the intrinsic mechanisms of successful dental implant placement in clinical practice, and it highlights the latest progress in the clinical application of 3D-printed dental implants. Undeniably, the use of 3D-printed dental implants not only offers patients more precise and personalized treatment plans but also brings revolutionary changes to the development of the medical industry.

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“…Coatings give the implant the photocatalytic antibacterial effect by modifying or loading novel semiconductor materials, such as graphene [61], molybdenum disulfide [62], black phosphorus [63], and molybdenum diselenide [64]. They also promote osteogenesis through loading drugs, (for example, pitavastatin [65] and quercetin [66]), active substances (insulin growth factor binding protein-3 [67] and BMP-2 [68]) and inorganic matter (HA [69,70] and bioactive glass [71]). In addition, chitosan combines with polyanions such as gelatin [72,73], hyaluronic acid [74], and sodium alginate [75,76] to form a polyelectrolyte complex, promoting the surface functionalization of titanium.…”

Section: Chitosan-based Hydrogel Coatingmentioning

confidence: 99%

Progress in Surface Modification of Titanium Implants by Hydrogel Coatings

Chen

Feng

Xia

et al. 2023

Gels

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Although titanium and titanium alloys have become the preferred materials for various medical implants, surface modification technology still needs to be strengthened in order to adapt to the complex physiological environment of the human body. Compared with physical or chemical modification methods, biochemical modification, such as the introduction of functional hydrogel coating on implants, can fix biomolecules such as proteins, peptides, growth factors, polysaccharides, or nucleotides on the surface of the implants, so that they can directly participate in biological processes; regulate cell adhesion, proliferation, migration, and differentiation; and improve the biological activity on the surface of the implants. This review begins with a look at common substrate materials for hydrogel coatings on implant surfaces, including natural polymers such as collagen, gelatin, chitosan, and alginate, and synthetic materials such as polyvinyl alcohol, polyacrylamide, polyethylene glycol, and polyacrylic acid. Then, the common construction methods of hydrogel coating (electrochemical method, sol–gel method and layer-by-layer self-assembly method) are introduced. Finally, five aspects of the enhancement effect of hydrogel coating on the surface bioactivity of titanium and titanium alloy implants are described: osseointegration, angiogenesis, macrophage polarization, antibacterial effects, and drug delivery. In this paper, we also summarize the latest research progress and point out the future research direction. After searching, no previous relevant literature reporting this information was found.

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Electrophoretic deposition of hydroxyapatite/chitosan nanocomposites: the effect of dispersing agents on the coating properties

Abstract: Electrophoretic deposition was used for coating of titanium substrate with a composite of hydroxyapatite (HA)-chitosan (CS) in the presence of polyvinyl butyral (PVB), polyethylene glycol (PEG), and triethanolamine (TEA).

Cited by 8 publications

References 121 publications

Determination of Calcium in Meat Products by Automatic Titration with 1,2-Diaminocyclohexane-N,N,N’,N’-tetraacetic Acid

Determination of Calcium in Meat Products by Automatic Titration with 1,2-Diaminocyclohexane-N,N,N’,N’-tetraacetic Acid

Research Progress on the Preparation Process and Material Structure of 3D-Printed Dental Implants and Their Clinical Applications

Progress in Surface Modification of Titanium Implants by Hydrogel Coatings

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