Bioceramic Coatings for Metallic Implants

Vlădescu, Alina; Surmeneva, Maria A.; Cotruț, Cosmin M.; Surmenev, Roman A.; Antoniac, Iulian Vasile

doi:10.1007/978-3-319-12460-5_31

Cited by 10 publications

(6 citation statements)

References 127 publications

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“…The ceramic hydroxyapatite [Ca 10 (PO 4 ) 6 (OH) 2 , HA], known for its bioactive nature, is the most stable calcium phosphate (CaP) mineral in the human body . It is often applied as a coating on a metallic substrate for enhancing the bone formation process around an implant . The most commonly used substrates for HA coating deposition are titanium (Ti) and its alloys, which are clinically used as metal implants due to their good mechanical properties and high corrosion resistance. − HA-coated Ti alloy biocomposite implants show excellent biocompatibility and satisfactory mechanical properties during short-term implant-to-bone fixation. , However, a drawback of this coating/substrate system is its poor adhesion at the interface, which limits the long-term performance of the implants by its influence on the mechanical, anticorrosive, and tribological characteristics as well as its integrity.…”

Section: Introductionmentioning

confidence: 99%

Density Functional Theory Study of Interface Interactions in Hydroxyapatite/Rutile Composites for Biomedical Applications

et al. 2017

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To gain insight into the nature of the adhesion mechanism between hydroxyapatite (HA) and rutile (rTiO 2 ), the mutual affinity between their surfaces was systematically studied using density functional theory (DFT). We calculated both bulk and surface properties of HA and rTiO 2 , and explored the interfacial bonding mechanism of amorphous HA (aHA) surface onto amorphous as well as stoichiometric and nonstoichiometric crystalline rTiO 2 . Formation energies of bridging and subbridging oxygen vacancies considered in the rTiO 2 (110) surface were evaluated and compared with other theoretical and experimental results. The interfacial interaction was evaluated through the work of adhesion. For the aHA/rTiO 2 (110) interfaces, the work of adhesion is found to depend strongly on the chemical environment of the rTiO 2 (110) surface. Electronic analysis indicates that the charge transfer is very small in the case of interface formation between aHA and crystalline rTiO 2 (110). In contrast, significant charge transfer occurs between aHA and amorphous rTiO 2 (aTiO 2 ) slabs during the formation of the interface. Charge density difference (CDD) analysis indicates that the dominant interactions in the interface have significant covalent character, and in particular the Ti−O and Ca−O bonds. Thus, the obtained results reveal that the aHA/aTiO 2 interface shows a more preferable interaction and is thermodynamically more stable than other interfaces. These results are particularly important for improving the long-term stability of HA-based implants.

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Section: Introductionmentioning

confidence: 99%

Density Functional Theory Study of Interface Interactions in Hydroxyapatite/Rutile Composites for Biomedical Applications

et al. 2017

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“…[ 20 ] By maintaining mechanical properties and improving the problem of biointerface incompatibility, bioceramic materials are a common type of surface functionalized coating for biomedical applications. [ 22 ] For instance, hydroxyapatite (HAp) coatings have been used extensively in orthopedics over the last few decades. The coatings are used on metal implants in clinical applications to accelerate and enhance fixation for bone growth; however, there are some problems with the long‐term stability of HAp coatings.…”

Section: Biointerface Coating Technologiesmentioning

confidence: 99%

Biointerface Coatings With Structural and Biochemical Properties Modifications of Biomaterials

Lee

Christy

et al. 2023

Adv Materials Inter

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fundamental properties from the physical perspective (e.g., surface roughness, hydrophobicity, elasticity, surface structure/ geometry, and mechanical strength) and the chemical perspective (e.g., bio and/or chemical functionality) can affect cellular responses, including cell attachment, proliferation, migration, differentiation, and apoptosis. [1][2][3][4] For instance, cells respond extensively to synthetic extracellular matrix (ECM) on substrates with multiple features, such as chemical composition, geometry and topological features, ligand organization, and substrate stiffness. [5][6][7][8]

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“…Bio-ceramic coatings are frequently used for modifying the surface of metallic biomaterial to obtain acceptable corrosion resistance because the chemical structure of metal oxides is more stable than that of pure metals and their hydroxides. Layered double hydroxide (LDH), oxides (such as ZrO 2 , TiO 2 , SiO 2 , Al 2 O 3 , and CeO 2 ), silicates, carbon, and calcium phosphate (CaP) salts make up the majority of ceramic and inorganic coatings [107]. Bioactive and bioinert coatings, in particular, are the two primary categories of bio-ceramic coatings.…”

Section: Bio-ceramic Coatingmentioning

confidence: 99%

Surface modification during hydroxyapatite powder mixed electric discharge machining of metallic biomaterials: a review

Bisaria

Patra

Mohanty

2022

Surface Engineering

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Surface modifications play a vital role in the performance of bio-implants. Powder mixed electric discharge machining (PM-EDM), a recently developed advanced machining method, can machine and coat the surface of conductive materials at the same time. Hydroxyapatite is a bio-ceramic with a bone-like composition and excellent biocompatibility. Several coating techniques are used to deposit a bio-ceramic layer on the implant surface; however, hydroxyapatite powder mixed-EDM (HAp-EDM) is an electro-thermal process that can be used for surface coating as well as machining of metallic biomaterials. In this review article, surface characteristics such as surface morphology/topography, micro-hardness, phase analysis, recast layer, elemental composition, corrosion/wear resistance, and biocompatibility of the coated surface of an implant after HAp-EDM have been meticulously reviewed. This review also looks at future research opportunities for the HAp-EDM process to meet the high standards required for biomedical materials and their applications in bio-implant manufacturing.

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Bioceramic Coatings for Metallic Implants

Cited by 10 publications

References 127 publications

Density Functional Theory Study of Interface Interactions in Hydroxyapatite/Rutile Composites for Biomedical Applications

Density Functional Theory Study of Interface Interactions in Hydroxyapatite/Rutile Composites for Biomedical Applications

Biointerface Coatings With Structural and Biochemical Properties Modifications of Biomaterials

Surface modification during hydroxyapatite powder mixed electric discharge machining of metallic biomaterials: a review

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