1
|
Alfotawi R, Premnath S, El-Ghannam A, Alsafadi M, Mahmood A. In Vivo Analysis of Porous Bioactive Silicon Carbide Scaffold for Craniofacial Bone Augmentation. J Craniofac Surg 2023:00001665-990000000-01252. [PMID: 38014939 DOI: 10.1097/scs.0000000000009864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 10/09/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Bone augmentation is a vital area of research because of its high clinical demand and the reported complications associated with the available biomaterials. Purpose: The study assess the role of decellurized skeletal muscle (DSM) when combined with synthesized porous bioactive silicon carbide (SiC) ceramic and evaluated its ability to augment bone calvaria in a rat model. MATERIAL AND METHODS Eighteen rats were divided into 2 groups; group 1 (n=9), SiC discs (10 × 0.2 mm) pre-treated with 20% NaOH were placed as an onlay grafts on calvarial bone. Meanwhile, in group 2 (n=9), SiC discs pre-treated with 20% NaOH (10 × 0.2 mm) were covered with DSM. After 12 weeks, the grafted tissues were harvested and examined using cone-beam computed tomography, mechanical testing, and histologic analysis. RESULTS Cone-beam computed tomography for group 2 showed more radio-opacity for the remnant of SiC compared with native bone. The surface area and volume of radio-opacity were 2.48 mm2 ± 1.6 and 14.9 ± 7.8 mm3, respectively. The estimated quantitative average surface area of the radio-opacity for group 1 and volume were 2.55 mm2 ± (Sd=3.7) and 11.25 ± (Sd=8.9), respectively. Mechanically, comparable values of the flexural strength and statistically significant higher modulus of elasticity of calvaria in group 1 compared with group 2 and control (P<0.001). Histologically, group 2 region of woven bone was seen close to the lamellar bone (native bone), and there was immature bone present near the implanted SiC. CONCLUSION The tested construct made of SiC/DSM has potential to osteointegrate into native bone, making it a suitable material for bone augmentation.
Collapse
Affiliation(s)
- Randa Alfotawi
- Department of Oral and Maxillofacial Surgery, Dental Faculty, King Saud University, Riyadh, Saudi Arabia
| | - Sangeetha Premnath
- Department of Oral and Maxillofacial Surgery, Dental Faculty, King Saud University, Riyadh, Saudi Arabia
| | - Ahmad El-Ghannam
- Department of Mechanical Engineering and Engineering Science, University of North Carolina, Charlotte, NC
| | - Mona Alsafadi
- Stem Cell Unit, Department of Anatomy, College of Medicine, King Saud University, Riyadh, Saudi Arabi
| | - Amer Mahmood
- Stem Cell Unit, Department of Anatomy, College of Medicine, King Saud University, Riyadh, Saudi Arabi
| |
Collapse
|
2
|
Jiang S, Zhang W, Li X, Xu Z, Liu J, Liu S. Discrete element simulation of compression failure mechanism of SiC ceramic considering collinear flaws. J Mech Behav Biomed Mater 2023; 142:105849. [PMID: 37116310 DOI: 10.1016/j.jmbbm.2023.105849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/09/2023] [Accepted: 04/10/2023] [Indexed: 04/30/2023]
Abstract
A particle-based numerical simulation model was established for SiC ceramics, and a method of deleting the particles along the specified direction was chosen to produce a pair of pre-existing collinear flaws. A serial of simulations were carried out to investigate the effects of inclination angle and ligament length on the failure mechanism under uniaxial compression. The laws of crack initiation and propagation as well as the distribution laws of the stress field and displacement field around the pre-existing flaws were analyzed. The results showed that the influence of inclination angle θ on micro-crack initiation, propagation and coalescence was more significant than that of ligament length L for pre-existing collinear flaws. Meanwhile, three coalescence models can be found with the increase of the inclination angle. By analyzing the evolution process of the displacement and stress fields during the loading process, it was clearly that the first crack was induced by the tensile stress concentration, and the secondary crack was initiated and propagated with tensile and shear stress. Moreover, the propagation mechanism of the micro-crack was closely related to the evolution behaviours of the stress and displacement fields.
Collapse
Affiliation(s)
- Shengqiang Jiang
- School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan, 411105, China; Engineering Research Center of Complex Tracks Processing Technology and Equipment of Ministry of Education, Xiangtan, 411105, China.
| | - Wei Zhang
- School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan, 411105, China; Engineering Research Center of Complex Tracks Processing Technology and Equipment of Ministry of Education, Xiangtan, 411105, China
| | - Xu Li
- School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan, 411105, China; Engineering Research Center of Complex Tracks Processing Technology and Equipment of Ministry of Education, Xiangtan, 411105, China
| | - Zhiqiang Xu
- School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan, 411105, China; Engineering Research Center of Complex Tracks Processing Technology and Equipment of Ministry of Education, Xiangtan, 411105, China
| | - Jingang Liu
- School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan, 411105, China; Engineering Research Center of Complex Tracks Processing Technology and Equipment of Ministry of Education, Xiangtan, 411105, China.
| | - Sisi Liu
- School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan, 411105, China; Engineering Research Center of Complex Tracks Processing Technology and Equipment of Ministry of Education, Xiangtan, 411105, China
| |
Collapse
|
3
|
Fathi F, Sueoka B, Zhao F, Zeng X. Nitrogen-Doped 4H Silicon Carbide Single-Crystal Electrode for Selective Electrochemical Sensing of Dopamine. Anal Chem 2023; 95:4855-4862. [PMID: 36893723 DOI: 10.1021/acs.analchem.2c03609] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
In this work, we designed, fabricated, and characterized the first nitrogen (N)-doped single-crystalline 4H silicon carbide (4H-SiC) electrode for sensing the neurotransmitter dopamine. This N-doped 4H-SiC electrode showed good selectivity for redox reactions of dopamine in comparison with uric acid (UA), ascorbic acid (AA), and common cationic ([Ru(NH3)6]3+), anionic ([Fe(CN)6]3-), and organic (methylene blue) redox molecules. The mechanisms of this unique selectivity are rationalized by the unique negative Si valency and adsorption properties of the analytes on the N-doped 4H-SiC surface. Quantitative electrochemical detection of dopamine by the 4H-SiC electrode was achieved in the linear range from 50 nM to 10 μM with a detection limit of 0.05 μM and a sensitivity of 3.2 nA.μM-1 in a pH = 7.4 phosphate buffer solution. In addition, the N-doped 4H-SiC electrode demonstrated excellent electrochemical stability. This work forms the foundation for developing 4H-SiC as the next-generation robust and biocompatible neurointerface material for a broad range of applications such as the in vivo sensing of neurotransmitters.
Collapse
Affiliation(s)
- Fatemeh Fathi
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, United States
| | - Brandon Sueoka
- Micro/Nanoelectronics and Energy Laboratory, School of Engineering and Computer Science, Washington State University, Vancouver, Washington 98686, United States
| | - Feng Zhao
- Micro/Nanoelectronics and Energy Laboratory, School of Engineering and Computer Science, Washington State University, Vancouver, Washington 98686, United States
| | - Xiangqun Zeng
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, United States
| |
Collapse
|
4
|
Hsu SM, Fares C, Xia X, Rasel MAJ, Ketter J, Afonso Camargo SE, Haque MA, Ren F, Esquivel-Upshaw JF. In Vitro Corrosion of SiC-Coated Anodized Ti Nano-Tubular Surfaces. J Funct Biomater 2021; 12:52. [PMID: 34564201 PMCID: PMC8482235 DOI: 10.3390/jfb12030052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/01/2021] [Accepted: 09/12/2021] [Indexed: 11/16/2022] Open
Abstract
Peri-implantitis leads to implant failure and decreases long-term survival and success rates of implant-supported prostheses. The pathogenesis of this disease is complex but implant corrosion is believed to be one of the many factors which contributes to progression of this disease. A nanostructured titanium dioxide layer was introduced using anodization to improve the functionality of dental implants. In the present study, we evaluated the corrosion performance of silicon carbide (SiC) on anodized titanium dioxide nanotubes (ATO) using plasma-enhanced chemical vapor deposition (PECVD). This was investigated through a potentiodynamic polarization test and bacterial incubation for 30 days. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to analyze surface morphologies of non-coated and SiC-coated nanotubes. Energy dispersive X-ray (EDX) was used to analyze the surface composition. In conclusion, SiC-coated ATO exhibited improved corrosion resistance and holds promise as an implant coating material.
Collapse
Affiliation(s)
- Shu-Min Hsu
- Department of Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (S.-M.H.); (S.E.A.C.)
| | - Chaker Fares
- Department of Chemical Engineering, University of Florida, Gainesville, FL 32610, USA; (C.F.); (X.X.); (F.R.)
| | - Xinyi Xia
- Department of Chemical Engineering, University of Florida, Gainesville, FL 32610, USA; (C.F.); (X.X.); (F.R.)
| | - Md Abu Jafar Rasel
- Department of Mechanical Engineering, Penn State University, University Park, PA 16802, USA; (M.A.J.R.); (M.A.H.)
| | | | - Samira Esteves Afonso Camargo
- Department of Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (S.-M.H.); (S.E.A.C.)
| | - Md Amanul Haque
- Department of Mechanical Engineering, Penn State University, University Park, PA 16802, USA; (M.A.J.R.); (M.A.H.)
| | - Fan Ren
- Department of Chemical Engineering, University of Florida, Gainesville, FL 32610, USA; (C.F.); (X.X.); (F.R.)
| | - Josephine F. Esquivel-Upshaw
- Department of Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (S.-M.H.); (S.E.A.C.)
| |
Collapse
|
5
|
Ma Z, Liu R, Cao F, Li J, Yang J, Kang K, Gao Z, Zhao D. Bone screws of porous silicon carbide coated with tantalum improve osseointegration and osteogenesis in goat femoral neck fractures. Biomed Mater 2021; 16. [PMID: 34192669 DOI: 10.1088/1748-605x/ac103b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/30/2021] [Indexed: 11/11/2022]
Abstract
Traditional metal materials, such as stainless steel and titanium (Ti) alloys, are still the gold standards for fracture fixation. However, the elastic moduli of these materials differ from that of human cortical bone, and the stress shielding effect affects fracture healing, leading to secondary fractures. Herein, a new porous Ta coated SiC (pTa-SiC) scaffold using in internal fixation devices with good mechanical and biological properties was prepared based on porous silicon carbide (SiC) scaffold and tantalum (Ta) metal. The osteogenic and osseointegration properties of the pTa-SiC scaffold were investigated by bothin vitroandin vivotests. The results showed that compared with porous titanium (pTi), the pTa-SiC promoted the proliferation, migration, and osteogenic differentiation of human bone marrow-derived mesenchymal stem cells. Moreover, the internal fixation tests were carried out in a goat load-bearing femoral neck fracture model. Histological results showed good osseointegration around the pTa-SiC screws. And the acid etching results showed that bone cells grew tightly on the pTa-SiC throughout bone canaliculi, and the growth mode was contact osteogenesis, which indicated good biological fixation effects. Therefore, it is reasonable to be expected that the new pTa-SiC scaffold with excellent mechanical and biological properties could be a promising candidate for bone implant field.
Collapse
Affiliation(s)
- Zhijie Ma
- School of Biomedical Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Rong Liu
- School of Biomedical Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Fang Cao
- School of Biomedical Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Jingyu Li
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| | - Jiahui Yang
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| | - Kai Kang
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| | - Ziqi Gao
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| | - Dewei Zhao
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| |
Collapse
|
6
|
Substituted Hydroxyapatite, Glass, and Glass-Ceramic Thin Films Deposited by Nanosecond Pulsed Laser Deposition (PLD) for Biomedical Applications: A Systematic Review. COATINGS 2021. [DOI: 10.3390/coatings11070811] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The deposition of thin films of bioactive materials is the most common approach to improve the bone bonding ability of an implant surface. With this purpose, several wet and plasma assisted deposition methods were proposed in the scientific literature. In this review, we considered films obtained by nanosecond Pulsed Laser Deposition (PLD). Since hydroxyapatite (HA) has composition and structure similar to that of the mineral component of the bone, the initial studies focused on the selection of experimental conditions that would allow the deposition of films that retain HA stoichiometry and crystallinity. However, biological apatite was found to be a poorly crystalline and multi-substituted mineral; consequently, the attention of researchers was oriented towards the deposition of substituted HA, glass (BG), and glass-ceramic (BGC) bioactive materials to exploit the biological relevance of foreign ions and crystallinity. In this work, after a description of the nanosecond ablation and film growth of ceramic materials, we reported studies on the mechanism of HA ablation and deposition, evidencing the peculiarities of PLD. The literature concerning the PLD of ion substituted HA, BG, and BGC was then reviewed and the performances of the coatings were discussed. We concluded by describing the advantages, limitations, and perspectives of PLD for biomedical applications.
Collapse
|
7
|
Bakytkarim Y, Tursynbolat S, Huang J, Wang L. Free‐enzymatic Indirect Detection of Malathion by SiC@CuO‐NPs Composite Nanomaterial Modified Glassy Carbon Electrode. ChemistrySelect 2021. [DOI: 10.1002/slct.202100904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yrysgul Bakytkarim
- JCS«A.B.Bekturov Institute of chemical sciences» Almaty Republic of Kazakhstan
| | - Satar Tursynbolat
- School of Chemistry and Chemical Engineering South China University of Technology Guangdong Province P.R. China
| | - Jianzhi Huang
- School of Environment and Civil Engineering Dongguan University of Technology Dongguan Guangdong 523808 P.R.China
| | - Lishi Wang
- School of Chemistry and Chemical Engineering South China University of Technology Guangdong Province P.R. China
| |
Collapse
|
8
|
Siddiqui HA, Pickering KL, Mucalo MR. Study of biomorphic calcium deficient hydroxyapatite fibres derived from a natural Harakeke( Phormium tenax) leaf fibre template. BIOINSPIRATION & BIOMIMETICS 2020; 16:016015. [PMID: 32987371 DOI: 10.1088/1748-3190/abbc64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 09/28/2020] [Indexed: 06/11/2023]
Abstract
The complex structure of natural bio-organic matter has inspired scientists to utilise these as templates to design 'biomorphic materials', which retain the intricate architecture of the materials while acting as a useful bioactive material. Biomorphic hydroxyapatite-based fibres were synthesised usingHarakekeleaf fibre as a template, which constitutes a powerful method for manufacturing bioactive ceramic fibres. Furthermore, in creating the hydroxyapatite-based fibres, a natural source of calcium and phosphate ions (from bovine bone) was utilised to create the digest solution in which the leaf fibres were immersed prior to their calcination to form the inorganic fibres. Chemical, thermogravimetric and microscopic characterisation confirmed that the final product was able to successfully replicate the shape of the fibres and furthermore be transformed into calcium deficient, bone-like hydroxyapatite.
Collapse
Affiliation(s)
- Humair A Siddiqui
- School of Engineering, University of Waikato, Hamilton 3240, New Zealand
- Department of Materials Engineering, Faculty of Chemical & Process Engineering, NED University of Engineering & Technology, Karachi 75270, Pakistan
| | - Kim L Pickering
- School of Engineering, University of Waikato, Hamilton 3240, New Zealand
| | - Michael R Mucalo
- School of Science, University of Waikato, Hamilton 3240, New Zealand
| |
Collapse
|
9
|
Demonstration of a SiC Protective Coating for Titanium Implants. MATERIALS 2020; 13:ma13153321. [PMID: 32722625 PMCID: PMC7435394 DOI: 10.3390/ma13153321] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/16/2020] [Accepted: 07/23/2020] [Indexed: 12/02/2022]
Abstract
To mitigate the corrosion of titanium implants and improve implant longevity, we investigated the capability to coat titanium implants with SiC and determined if the coating could remain intact after simulated implant placement. Titanium disks and titanium implants were coated with SiC using plasma-enhanced chemical vapor deposition (PECVD) and were examined for interface quality, chemical composition, and coating robustness. SiC-coated titanium implants were torqued into a Poly(methyl methacrylate) (PMMA) block to simulate clinical implant placement followed by energy dispersive spectroscopy to determine if the coating remained intact. After torquing, the atomic concentration of the detectable elements (silicon, carbon, oxygen, titanium, and aluminum) remained relatively unchanged, with the variation staying within the detection limits of the Energy Dispersive Spectroscopy (EDS) tool. In conclusion, plasma-enhanced chemical vapor deposited SiC was shown to conformably coat titanium implant surfaces and remain intact after torquing the coated implants into a material with a similar hardness to human bone mass.
Collapse
|
10
|
Ma Z, Li J, Cao F, Yang J, Liu R, Zhao D. Porous silicon carbide coated with tantalum as potential material for bone implants. Regen Biomater 2020; 7:453-459. [PMID: 33149934 PMCID: PMC7597802 DOI: 10.1093/rb/rbaa021] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/02/2020] [Accepted: 04/12/2020] [Indexed: 01/22/2023] Open
Abstract
Porous silicon carbide (SiC) has a specific biomorphous microstructure similar to the trabecular microstructure of human bone. Compared with that of bioactive ceramics, such as calcium phosphate, SiC does not induce spontaneous interface bonding to living bone. In this study, bioactive tantalum (Ta) metal deposited on porous SiC scaffolds by chemical vapour deposition was investigated to accelerate osseointegration and improve the bonding to bones. Scanning electron microscopy indicated that the Ta coating evenly covered the entire scaffold structure. Energy-dispersive spectroscopy and X-ray diffraction analysis showed that the coating consisted of Ta phases. The bonding strength between the Ta coating and the SiC substrate is 88.4 MPa. The yield strength of porous SiC with a Ta coating (pTa) was 45.8 ± 2.9 MPa, the compressive strength was 61.4 ± 3.2 MPa and the elastic modulus was ∼4.8 GPa. When MG-63 human osteoblasts were co-cultured with pTa, osteoblasts showed good adhesion and spreading on the surface of the pTa and its porous structure, which showed that it has excellent bioactivity and cyto-compatibility. To further study the osseointegration properties of pTa. PTa and porous titanium (pTi) were implanted into the femoral neck of goats for 12 weeks, respectively. The Van-Gieson staining of histological sections results that the pTa group had better osseointegration than the pTi group. These results indicate that coating bioactive Ta metal on porous SiC scaffolds could be a potential material for bone substitutes.
Collapse
Affiliation(s)
- Zhijie Ma
- Faculty of Electronic Information and Electrical Engineering, School of Biomedical Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian, Liaoning 116024, China.,Orthopaedic Department Affiliated ZhongShan Hospital of Dalian University, No. 6 Jiefang Street, Zhongshan District, Dalian, Liaoning 116001, China
| | - Jingyu Li
- Orthopaedic Department Affiliated ZhongShan Hospital of Dalian University, No. 6 Jiefang Street, Zhongshan District, Dalian, Liaoning 116001, China
| | - Fang Cao
- Faculty of Electronic Information and Electrical Engineering, School of Biomedical Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian, Liaoning 116024, China
| | - Jiahui Yang
- Orthopaedic Department Affiliated ZhongShan Hospital of Dalian University, No. 6 Jiefang Street, Zhongshan District, Dalian, Liaoning 116001, China
| | - Rong Liu
- Faculty of Electronic Information and Electrical Engineering, School of Biomedical Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian, Liaoning 116024, China
| | - Dewei Zhao
- Orthopaedic Department Affiliated ZhongShan Hospital of Dalian University, No. 6 Jiefang Street, Zhongshan District, Dalian, Liaoning 116001, China
| |
Collapse
|
11
|
Fares C, Elhassani R, Partain J, Hsu SM, Craciun V, Ren F, Esquivel-Upshaw JF. Annealing and N 2 Plasma Treatment to Minimize Corrosion of SiC-Coated Glass-Ceramics. MATERIALS 2020; 13:ma13102375. [PMID: 32455653 PMCID: PMC7287612 DOI: 10.3390/ma13102375] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/09/2020] [Accepted: 05/19/2020] [Indexed: 01/25/2023]
Abstract
To improve the chemical durability of SiC-based coatings on glass-ceramics, the effects of annealing and N2 plasma treatment were investigated. Fluorapatite glass-ceramic disks were coated with SiC via plasma-enhanced chemical vapor deposition (PECVD), treated with N2 plasma followed by an annealing step, characterized, and then immersed in a pH 10 buffer solution for 30 days to study coating delamination. Post-deposition annealing was found to densify the deposited SiC and lessen SiC delamination during the pH 10 immersion. When the SiC was treated with a N2 plasma for 10 min, the bulk properties of the SiC coating were not affected but surface pores were sealed, slightly improving the SiC’s chemical durability. By combining N2 plasma-treatment with a post-deposition annealing step, film delamination was reduced from 94% to 2.9% after immersion in a pH 10 solution for 30 days. X-ray Photoelectron spectroscopy (XPS) detected a higher concentration of oxygen on the surface of the plasma treated films, indicating a thin SiO2 layer was formed and could have assisted in pore sealing. In conclusion, post-deposition annealing and N2 plasma treatment where shown to significantly improve the chemical durability of PECVD deposited SiC films used as a coating for glass-ceramics.
Collapse
Affiliation(s)
- Chaker Fares
- Chemical Engineering Department, University of Florida College of Engineering, Gainesville, FL 32611, USA; (C.F.); (R.E.); (J.P.); (F.R.)
| | - Randy Elhassani
- Chemical Engineering Department, University of Florida College of Engineering, Gainesville, FL 32611, USA; (C.F.); (R.E.); (J.P.); (F.R.)
| | - Jessica Partain
- Chemical Engineering Department, University of Florida College of Engineering, Gainesville, FL 32611, USA; (C.F.); (R.E.); (J.P.); (F.R.)
| | - Shu-Min Hsu
- Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, FL 32610, USA;
| | - Valentin Craciun
- Plasma and Radiation Physics, National Institute for Laser, Laser Department, RO-077125 Bucharest, Romania;
| | - Fan Ren
- Chemical Engineering Department, University of Florida College of Engineering, Gainesville, FL 32611, USA; (C.F.); (R.E.); (J.P.); (F.R.)
| | - Josephine F. Esquivel-Upshaw
- Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, FL 32610, USA;
- Correspondence:
| |
Collapse
|
12
|
El-Ghannam A, Greenier M, Johnson M, Marriott I. Synthesis and characterization of porous bioactive SiC tissue engineering scaffold. J Biomed Mater Res A 2020; 108:2162-2174. [PMID: 32319213 DOI: 10.1002/jbm.a.36973] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 03/25/2020] [Accepted: 04/04/2020] [Indexed: 12/17/2022]
Abstract
Silicon carbide (SiC) is an inert material with excellent biocompatibility properties. A major issue that limits its use as a medical device is the difficult processing technique that requires hot pressing at a temperature (>2,000o C) and pressure (1,000-2,000 atm). In the present study, we developed a protocol to synthesize a porous SiC scaffold by pressing the powder at 50 MPa and heating at 900o C/2 hr. The surface of SiC was chemically modified by NaOH to facilitate sintering and induce bioactivity. Porous discs with 51.51 ± 3.17% porosity and interconnected pores in the size range from 1 to 1,000 μm were prepared using 40% PEG. The average compressive strength and Young's modulus of the scaffolds were 1.94 ± 0.70 and 169.2 ± 0.08 MPa, respectively. FTIR analysis confirmed the formation of biomimetic hydroxyapatite layer after 2 hr of immersion in simulated body fluid. The Ca/P ratio was dependent on the concentration of the silanol groups created on the material surface. Increasing the atomic % of silicon on the SiC surface from 33.27 ± 9.53% to 45.13 ± 4.74% resulted in a 76% increase in the osteocalcin expression by MC3T3-E1 cells seeded on the material after 7 days. The cells colonized the entire thickness of the template and filled the pores with mineralized extracellular matrix after 14 days. Taken all together, the porous SiC scaffolds can serve as a bone graft for tissue reconstruction and cell delivery in trauma surgery.
Collapse
Affiliation(s)
- Ahmed El-Ghannam
- Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, North Carolina, USA
| | - Madeline Greenier
- Department of Chemistry Nanoscale Science Program, University of North Carolina at Charlotte, Charlotte, North Carolina, USA
| | - Morgan Johnson
- Department of Biological Science, University of North Carolina at Charlotte, Charlotte, North Carolina, USA
| | - Ian Marriott
- Department of Biological Science, University of North Carolina at Charlotte, Charlotte, North Carolina, USA
| |
Collapse
|
13
|
Hsu SM, Ren F, Chen Z, Kim M, Fares C, Clark AE, Neal D, Esquivel-Upshaw JF. Novel Coating to Minimize Corrosion of Glass-Ceramics for Dental Applications. MATERIALS 2020; 13:ma13051215. [PMID: 32182716 PMCID: PMC7085065 DOI: 10.3390/ma13051215] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/20/2020] [Accepted: 03/06/2020] [Indexed: 11/19/2022]
Abstract
The effect of a novel silicon carbide (SiC) coating on the chemical durability of a fluorapatite glass-ceramic veneer was investigated by examining weight loss and ion release levels. The hypothesis that this novel coating will exhibit significant corrosion resistance was tested. Inductively coupled plasma atomic emission spectrometer (ICP) was used for ion concentration determination and scanning electron microscopy (SEM) for surface morphology analyses. Samples were immersed in pH 10 and pH 2 buffer solutions to represent extreme conditions in the oral cavity. Analyses were done at 15 and 30 days. The SiC coated group demonstrated significant reduction in weight loss across all solutions and time points (p < 0.0001). Ion release analyses demonstrated either a marginally lower or a significantly lower release of ions for the SiC-coated disks. SEM analysis reveals planarization of surfaces by the SiC-coated group. The surfaces of coated samples were not as corroded as the non-coated samples, which is indicative of the protective nature of these coatings. In conclusion, SiC is a novel coating that holds promise for improving the performance of ceramic materials used for dental applications.
Collapse
Affiliation(s)
- Shu-Min Hsu
- Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (M.K.); (A.E.C.); (J.F.E.-U.)
- Correspondence:
| | - Fan Ren
- Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA; (F.R.); (Z.C.); (C.F.)
| | - Zhiting Chen
- Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA; (F.R.); (Z.C.); (C.F.)
| | - Mijin Kim
- Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (M.K.); (A.E.C.); (J.F.E.-U.)
| | - Chaker Fares
- Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA; (F.R.); (Z.C.); (C.F.)
| | - Arthur E. Clark
- Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (M.K.); (A.E.C.); (J.F.E.-U.)
| | - Dan Neal
- Department of Neurosurgery, University of Florida College of Medicine, Gainesville, FL 32610, USA;
| | - Josephine F. Esquivel-Upshaw
- Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (M.K.); (A.E.C.); (J.F.E.-U.)
| |
Collapse
|
14
|
|
15
|
Filardo G, Roffi A, Fey T, Fini M, Giavaresi G, Marcacci M, Martínez-Fernández J, Martini L, Ramírez-Rico J, Salamanna F, Sandri M, Sprio S, Tampieri A, Kon E. Vegetable hierarchical structures as template for bone regeneration: New bio-ceramization process for the development of a bone scaffold applied to an experimental sheep model. J Biomed Mater Res B Appl Biomater 2019; 108:600-611. [PMID: 31095882 DOI: 10.1002/jbm.b.34414] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 04/18/2019] [Accepted: 04/25/2019] [Indexed: 12/19/2022]
Abstract
Long bone defects still represent a major clinical challenge in orthopedics, with the inherent loss of function considerably impairing the quality of life of the affected patients. Thus, the purpose of this study was to assess the safety and potential of bone regeneration offered by a load-bearing scaffold characterized by unique hierarchical architecture and high strength, with active surface facilitating new bone penetration and osseointegration in critical size bone defects. The results of this study showed the potential of bio-ceramization processes applied to vegetable hierarchical structures for the production of new wood-derived bone scaffolds, further improved by surface functionalization, with good biological and mechanical properties leading to successful treatment of critical size bone defects in the sheep model. Future studies are needed to evaluate if these scaffolds prototypes, as either biomaterial alone or in combination with augmentation strategies, may represent an optimal solution to enhance bone regeneration in humans.
Collapse
Affiliation(s)
- Giuseppe Filardo
- Applied Translational Research Center (ATR), IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Alice Roffi
- Applied Translational Research Center (ATR), IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Tobias Fey
- Department of Materials Science and Engineering, Institute of Glass and Ceramics, University of Erlangen-Nuernberg, Erlangen, Germany
| | - Milena Fini
- Preclinical and Surgical Studies Laboratory, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Gianluca Giavaresi
- Preclinical and Surgical Studies Laboratory, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Maurilio Marcacci
- Department of Biomedical Sciences, Humanitas University, Milan, Italy.,Knee Joint Reconstruction Center-3rd Orthopedic Division, Humanitas Clinical and Research Center, Milan, Italy
| | | | - Lucia Martini
- Preclinical and Surgical Studies Laboratory, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Joaquin Ramírez-Rico
- Department of Physics of the Condensed Matter, ICMS, University of Sevilla, CSIC, Seville, Spain
| | - Francesca Salamanna
- Preclinical and Surgical Studies Laboratory, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Monica Sandri
- Institute of Science and Technology for Ceramics, National Research Council, Faenza, Italy
| | - Simone Sprio
- Institute of Science and Technology for Ceramics, National Research Council, Faenza, Italy
| | - Anna Tampieri
- Institute of Science and Technology for Ceramics, National Research Council, Faenza, Italy
| | - Elizaveta Kon
- Department of Biomedical Sciences, Humanitas University, Milan, Italy.,Knee Joint Reconstruction Center-3rd Orthopedic Division, Humanitas Clinical and Research Center, Milan, Italy
| |
Collapse
|
16
|
Bakytkarim Y, Tursynbolat S, Zeng Q, Huang J, Wang L. A Highly Sensitive Determination of Parathion Pesticide by Solid-Phase Extraction on a Silicon Carbide Nanoparticles Modified Electrode. ChemistrySelect 2018. [DOI: 10.1002/slct.201802161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yrysgul Bakytkarim
- School of Chemistry and Chemical Engineering; South China University of Technology, Guangdong Province; P.R. China
| | - Satar Tursynbolat
- School of Chemistry and Chemical Engineering; South China University of Technology, Guangdong Province; P.R. China
| | - Qiang Zeng
- School of Chemistry and Chemical Engineering; South China University of Technology, Guangdong Province; P.R. China
| | - Jianzhi Huang
- School of Chemistry and Chemical Engineering; South China University of Technology, Guangdong Province; P.R. China
| | - Lishi Wang
- School of Chemistry and Chemical Engineering; South China University of Technology, Guangdong Province; P.R. China
| |
Collapse
|
17
|
Roushani M, Nezhadali A, Jalilian Z, Azadbakht A. Development of novel electrochemical sensor on the base of molecular imprinted polymer decorated on SiC nanoparticles modified glassy carbon electrode for selective determination of loratadine. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:1106-1114. [DOI: 10.1016/j.msec.2016.11.079] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 11/11/2016] [Accepted: 11/15/2016] [Indexed: 10/20/2022]
|
18
|
Fradetal L, Bano E, Attolini G, Rossi F, Stambouli V. A silicon carbide nanowire field effect transistor for DNA detection. NANOTECHNOLOGY 2016; 27:235501. [PMID: 27120971 DOI: 10.1088/0957-4484/27/23/235501] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This work reports on the label-free electrical detection of DNA molecules for the first time, using silicon carbide (SiC) as a novel material for the realization of nanowire field effect transistors (NWFETs). SiC is a promising semiconductor for this application due to its specific characteristics such as chemical inertness and biocompatibility. Non-intentionally n-doped SiC NWs are first grown using a bottom-up vapor-liquid-solid (VLS) mechanism, leading to the NWs exhibiting needle-shaped morphology, with a length of approximately 2 μm and a diameter ranging from 25 to 60 nm. Then, the SiC NWFETs are fabricated and functionalized with DNA molecule probes via covalent coupling using an amino-terminated organosilane. The drain current versus drain voltage (I d-V d) characteristics obtained after the DNA grafting and hybridization are reported from the comparative and simultaneous measurements carried out on the SiC NWFETs, used either as sensors or references. As a representative result, the current of the sensor is lowered by 22% after probe DNA grafting and by 7% after target DNA hybridization, while the current of the reference does not vary by more than ±0.6%. The current decrease confirms the field effect induced by the negative charges of the DNA molecules. Moreover, the selectivity, reproducibility, reversibility and stability of the studied devices are emphasized by de-hybridization, non-complementary hybridization and re-hybridization experiments. This first proof of concept opens the way for future developments using SiC-NW-based sensors.
Collapse
Affiliation(s)
- L Fradetal
- IMEP-LAHC, Grenoble INP-Minatec, 3 Parvis Louis Néel, 38016 Grenoble Cedex 1, France. LMGP, Grenoble INP-Minatec, 3 Parvis Louis Néel, 38016 Grenoble Cedex 1, France
| | | | | | | | | |
Collapse
|
19
|
Gryshkov O, Klyui NI, Temchenko VP, Kyselov VS, Chatterjee A, Belyaev AE, Lauterboeck L, Iarmolenko D, Glasmacher B. Porous biomorphic silicon carbide ceramics coated with hydroxyapatite as prospective materials for bone implants. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:143-152. [PMID: 27524006 DOI: 10.1016/j.msec.2016.05.113] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 04/18/2016] [Accepted: 05/24/2016] [Indexed: 02/03/2023]
Abstract
Porous and cytocompatible silicon carbide (SiC) ceramics derived from wood precursors and coated with bioactive hydroxyapatite (HA) and HA-zirconium dioxide (HA/ZrO2) composite are materials with promising application in engineering of bone implants due to their excellent mechanical and structural properties. Biomorphic SiC ceramics have been synthesized from wood (Hornbeam, Sapele, Tilia and Pear) using a forced impregnation method. The SiC ceramics have been coated with bioactive HA and HA/ZrO2 using effective gas detonation deposition approach (GDD). The surface morphology and cytotoxicity of SiC ceramics as well as phase composition and crystallinity of deposited coatings were analyzed. It has been shown that the porosity and pore size of SiC ceramics depend on initial wood source. The XRD and FTIR studies revealed the preservation of crystal structure and phase composition of in the HA coating, while addition of ZrO2 to the initial HA powder resulted in significant decomposition of the final HA/ZrO2 coating and formation of other calcium phosphate phases. In turn, NIH 3T3 cells cultured in medium exposed to coated and uncoated SiC ceramics showed high re-cultivation efficiency as well as metabolic activity. The recultivation efficiency of cells was the highest for HA-coated ceramics, whereas HA/ZrO2 coating improved the recultivation efficiency of cells as compared to uncoated SiC ceramics. The GDD method allowed generating homogeneous HA coatings with no change in calcium to phosphorus ratio. In summary, porous and cytocompatible bio-SiC ceramics with bioactive coatings show a great promise in construction of light, robust, inexpensive and patient-specific bone implants for clinical application.
Collapse
Affiliation(s)
- Oleksandr Gryshkov
- Institute for Multiphase Processes, Leibniz Universität Hannover, 30167 Hannover, Germany.
| | - Nickolai I Klyui
- College of Physics, Jilin University, 130012 Changchun, PR China; V. Lashkaryov Institute of Semiconductor Physics, National Academy of Science of Ukraine, 03028 Kyiv, Ukraine.
| | - Volodymyr P Temchenko
- V. Lashkaryov Institute of Semiconductor Physics, National Academy of Science of Ukraine, 03028 Kyiv, Ukraine.
| | - Vitalii S Kyselov
- V. Lashkaryov Institute of Semiconductor Physics, National Academy of Science of Ukraine, 03028 Kyiv, Ukraine.
| | - Anamika Chatterjee
- Institute for Multiphase Processes, Leibniz Universität Hannover, 30167 Hannover, Germany.
| | - Alexander E Belyaev
- V. Lashkaryov Institute of Semiconductor Physics, National Academy of Science of Ukraine, 03028 Kyiv, Ukraine.
| | - Lothar Lauterboeck
- Institute for Multiphase Processes, Leibniz Universität Hannover, 30167 Hannover, Germany.
| | - Dmytro Iarmolenko
- V. Lashkaryov Institute of Semiconductor Physics, National Academy of Science of Ukraine, 03028 Kyiv, Ukraine.
| | - Birgit Glasmacher
- Institute for Multiphase Processes, Leibniz Universität Hannover, 30167 Hannover, Germany.
| |
Collapse
|
20
|
Chemistry of one dimensional silicon carbide materials: Principle, production, application and future prospects. PROG SOLID STATE CH 2015. [DOI: 10.1016/j.progsolidstchem.2015.06.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
21
|
|
22
|
Yang P, Tong X, Wang G, Gao Z, Guo X, Qin Y. NiO/SiC nanocomposite prepared by atomic layer deposition used as a novel electrocatalyst for nonenzymatic glucose sensing. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4772-4777. [PMID: 25664816 DOI: 10.1021/am508508m] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
NiO nanoparticles are deposited onto SiC particles by atomic layer deposition (ALD). The structure of the NiO/SiC hybrid material is investigated by inductively coupled plasma atomic emission spectrometry (ICP-AES), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The size of the NiO nanoparticles is flexible and can be adjusted by altering the cycle number of the NiO ALD. Electrochemical measurements illustrate that NiO/SiC prepared with 600 cycles for NiO ALD exhibits the highest glucose sensing ability in alkaline electrolytes with a low detection limit of 0.32 μM (S/N = 3), high sensitivity of 2.037 mA mM(-1) cm(-2), a linear detection range from approximately 4 μM to 7.5 mM, and good stability. Its sensitivity is about 6 times of that for commercial NiO nanoparticles and NiO/SiC nanocomposites prepared by a traditional incipient wetness impregnation method. It is revealed that the superior electrochemical ability of ALD NiO/SiC is ascribed to the strong interaction between NiO and the SiC substrate and the high dispersity of NiO nanoparticles on the SiC surface. These results suggest that ALD is an effective way to deposit NiO on SiC for nonenzymatic glucose sensing.
Collapse
Affiliation(s)
- Peng Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Science , Taiyuan 030001, China
| | | | | | | | | | | |
Collapse
|
23
|
Wu L, Yuan Y, Hao F, Yang Z, Zhang J, Yu M. The Effects of SiC Foams on Cell Proliferation and Differentiation in Primary Osteoblasts. J HARD TISSUE BIOL 2015. [DOI: 10.2485/jhtb.24.37] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Lin Wu
- Department of Prosthodontics, School of Stomatology, China Medical University
| | - Yue Yuan
- Department of Prosthodontics, School of Stomatology, China Medical University
| | - Fengyu Hao
- Department of Prosthodontics, School of Stomatology, China Medical University
| | - Zhenming Yang
- Materials Fabrication and Processing Division, Institute of Metal Research, Chinese Academy of Sciences
| | - Jinsong Zhang
- Materials Fabrication and Processing Division, Institute of Metal Research, Chinese Academy of Sciences
| | - Meng Yu
- Key Laboratory of Transgenetic Animal Research, Liaoning Province, Department of Laboratory Animal of China Medical University, China Medical University
| |
Collapse
|
24
|
Kargupta R, Bok S, Darr CM, Crist BD, Gangopadhyay K, Gangopadhyay S, Sengupta S. Coatings and surface modifications imparting antimicrobial activity to orthopedic implants. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 6:475-95. [PMID: 24867883 DOI: 10.1002/wnan.1273] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 03/23/2014] [Accepted: 04/06/2014] [Indexed: 12/24/2022]
Abstract
Bacterial colonization and biofilm formation on an orthopedic implant surface is one of the worst possible outcomes of orthopedic intervention in terms of both patient prognosis and healthcare costs. Making the problem even more vexing is the fact that infections are often caused by events beyond the control of the operating surgeon and may manifest weeks to months after the initial surgery. Herein, we review the costs and consequences of implant infection as well as the methods of prevention and management. In particular, we focus on coatings and other forms of implant surface modification in a manner that imparts some antimicrobial benefit to the implant device. Such coatings can be classified generally based on their mode of action: surface adhesion prevention, bactericidal, antimicrobial-eluting, osseointegration promotion, and combinations of the above. Despite several advances in the efficacy of these antimicrobial methods, a remaining major challenge is ensuring retention of the antimicrobial activity over a period of months to years postoperation, an issue that has so far been inadequately addressed. Finally, we provide an overview of additional figures of merit that will determine whether a given antimicrobial surface modification warrants adoption for clinical use.
Collapse
Affiliation(s)
- Roli Kargupta
- Department of Bioengineering, University of Missouri, Columbia, MO, USA
| | | | | | | | | | | | | |
Collapse
|
25
|
Filardo G, Kon E, Tampieri A, Cabezas-Rodríguez R, Di Martino A, Fini M, Giavaresi G, Lelli M, Martínez-Fernández J, Martini L, Ramírez-Rico J, Salamanna F, Sandri M, Sprio S, Marcacci M. New bio-ceramization processes applied to vegetable hierarchical structures for bone regeneration: an experimental model in sheep. Tissue Eng Part A 2013; 20:763-73. [PMID: 24099033 DOI: 10.1089/ten.tea.2013.0108] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Bone loss is still a major problem in orthopedics. The purpose of this experimental study is to evaluate the safety and regenerative potential of a new scaffold based on a bio-ceramization process for bone regeneration in long diaphyseal defects in a sheep model. The scaffold was obtained by transformation of wood pieces into porous biomorphic silicon carbide (BioSiC®). The process enabled the maintenance of the original wood microstructure, thus exhibiting hierarchically organized porosity and high mechanical strength. To improve cell adhesion and osseointegration, the external surface of the hollow cylinder was made more bioactive by electrodeposition of a uniform layer of collagen fibers that were mineralized with biomimetic hydroxyapatite, whereas the internal part was filled with a bio-hybrid HA/collagen composite. The final scaffold was then implanted in the metatarsus of 15 crossbred (Merinos-Sarda) adult sheep, divided into 3 groups: scaffold alone, scaffold with platelet-rich plasma (PRP) augmentation, and scaffold with bone marrow stromal cells (BMSCs) added during implantation. Radiological analysis was performed at 4, 8, 12 weeks, and 4 months, when animals were sacrificed for the final radiological, histological, and histomorphometric evaluation. In all tested treatments, these analyses highlighted the presence of newly formed bone at the bone scaffolds' interface. Although a lack of substantial effect of PRP was demonstrated, the scaffold+BMSC augmentation showed the highest value of bone-to-implant contact and new bone growth inside the scaffold. The findings of this study suggest the potential of bio-ceramization processes applied to vegetable hierarchical structures for the production of wood-derived bone scaffolds, and document a suitable augmentation procedure in enhancing bone regeneration, particularly when combined with BMSCs.
Collapse
Affiliation(s)
- Giuseppe Filardo
- 1 Laboratory of Biomechanics, Rizzoli Orthopaedic Institute , Bologna, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Qian J, Suo A, Jin X, Xu W, Xu M. Preparation andin vitrocharacterization of biomorphic silk fibroin scaffolds for bone tissue engineering. J Biomed Mater Res A 2013; 102:2961-71. [DOI: 10.1002/jbm.a.34964] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 09/12/2013] [Accepted: 09/16/2013] [Indexed: 12/13/2022]
Affiliation(s)
- Junmin Qian
- State Key Laboratory for Mechanical Behaviors of Materials; Xi'an Jiaotong University; Xi'an 710049 China
| | - Aili Suo
- First Affiliated Hospital of Medical College of Xi'an Jiaotong University; Xi'an 710061 China
| | - Xinxia Jin
- State Key Laboratory for Mechanical Behaviors of Materials; Xi'an Jiaotong University; Xi'an 710049 China
| | - Weijun Xu
- State Key Laboratory for Mechanical Behaviors of Materials; Xi'an Jiaotong University; Xi'an 710049 China
| | - Minghui Xu
- State Key Laboratory for Mechanical Behaviors of Materials; Xi'an Jiaotong University; Xi'an 710049 China
| |
Collapse
|
27
|
Fernandes EM, Pires RA, Mano JF, Reis RL. Bionanocomposites from lignocellulosic resources: Properties, applications and future trends for their use in the biomedical field. Prog Polym Sci 2013. [DOI: 10.1016/j.progpolymsci.2013.05.013] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
28
|
Qian J, Yong X, Xu W, Jin X. Preparation and characterization of bimodal porous poly(γ-benzyl-L-glutamate) scaffolds for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4587-93. [PMID: 24094164 DOI: 10.1016/j.msec.2013.07.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 06/06/2013] [Accepted: 07/13/2013] [Indexed: 12/31/2022]
Abstract
An ideal scaffold in bone tissue-engineering strategy should provide biomimetic extracellular matrix-like architecture and biological properties. Poly(γ-benzyl-L-glutamate) (PBLG) has been a popular model polypeptide for various potential biomedical applications due to its good biocompatibility and biodegradability. This study developed novel bimodal porous PBLG polypeptide scaffolds via a combination of biotemplating method and in situ ring-opening polymerization of γ-benzyl-L-gIutamate N-carboxyanhydride (BLG-NCA). The PBLG scaffolds were characterized by proton nuclear magnetic resonance spectroscopy, X-ray diffraction, differential scanning calorimetry, scanning electron microscope (SEM) and mechanical test. The results showed that the semi-crystalline PBLG scaffolds exhibited an anisotropic porous structure composed of honeycomb-like channels (100-200 μm in diameter) and micropores (5-20 μm), with a very high porosity of 97.4±1.6%. The compressive modulus and glass transition temperature were 402.8±20.6 kPa and 20.2°C, respectively. The in vitro biocompatibility evaluation with MC3T3-E1 cells using SEM, fluorescent staining and MTT assay revealed that the PBLG scaffolds had good biocompatibility and favored cell attachment, spread and proliferation. Therefore, the bimodal porous polypeptide scaffolds are promising for bone tissue engineering.
Collapse
Affiliation(s)
- Junmin Qian
- State Key Laboratory for Mechanical Behaviors of Materials, Xi'an Jiaotong University, Xi'an 710049, China.
| | | | | | | |
Collapse
|
29
|
Schoell SJ, Sachsenhauser M, Oliveros A, Howgate J, Stutzmann M, Brandt MS, Frewin CL, Saddow SE, Sharp ID. Organic functionalization of 3C-SiC surfaces. ACS APPLIED MATERIALS & INTERFACES 2013; 5:1393-1399. [PMID: 23357505 DOI: 10.1021/am302786n] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We demonstrate the functionalization of n-type (100) and (111) 3C-SiC surfaces with organosilanes. Self-assembled monolayers (SAMs) of amino-propyldiethoxymethylsilane (APDEMS) and octadecyltrimethoxysilane (ODTMS) are formed via wet chemical processing techniques. Their structural, chemical, and electrical properties are investigated using static water contact angle measurements, atomic force microscopy, and X-ray photoelectron spectroscopy, revealing that the organic layers are smooth and densely packed. Furthermore, combined contact potential difference and surface photovoltage measurements demonstrate that the heterostructure functionality and surface potential can be tuned by utilizing different organosilane precursor molecules. Molecular dipoles are observed to significantly affect the work functions of the modified surfaces. Furthermore, the magnitude of the surface band bending is reduced following reaction of the hydroxylated surfaces with organosilanes, indicating that partial passivation of electrically active surface states is achieved. Micropatterning of organic layers is demonstrated by lithographically defined oxidation of organosilane-derived monolayers in an oxygen plasma, followed by visualization of resulting changes of the local wettability, as well as fluorescence microscopy following immobilization of fluorescently labeled BSA protein.
Collapse
Affiliation(s)
- Sebastian J Schoell
- Walter Schottky Institut and Physik-Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
30
|
López-Álvarez M, Rodríguez-Valencia C, Serra J, González P. Bio-inspired Ceramics: Promising Scaffolds for Bone Tissue Engineering. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.proeng.2013.05.093] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
31
|
Dey A, van den Hoogen CJ, Rosso M, Lousberg N, Hendrix MMRM, Friedrich H, Ramírez-Rico J, Zuilhof H, de With G, Sommerdijk NAJM. Biomimetic Mineralization of Calcium Phosphate on a Functionalized Porous Silicon Carbide Biomaterial. Chempluschem 2012. [DOI: 10.1002/cplu.201200118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
32
|
Frewin CL, Locke C, Saddow SE, Weeber EJ. Single-crystal cubic silicon carbide: an in vivo biocompatible semiconductor for brain machine interface devices. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2012; 2011:2957-60. [PMID: 22254961 DOI: 10.1109/iembs.2011.6090582] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Single crystal silicon carbide (SiC) is a wide band-gap semiconductor which has shown both bio- and hemo-compatibility [1-5]. Although single crystalline SiC has appealing bio-sensing potential, the material has not been extensively characterized. Cubic silicon carbide (3C-SiC) has superior in vitro biocompatibility compared to its hexagonal counterparts [3, 5]. Brain machine interface (BMI) systems using implantable neuronal prosthetics offer the possibility of bi-directional signaling, which allow sensory feedback and closed loop control. Existing implantable neural interfaces have limited long-term reliability, and 3C-SiC may be a material that may improve that reliability. In the present study, we investigated in vivo 3C-SiC biocompatibility in the CNS of C56BL/6 mice. 3C-SiC was compared against the known immunoreactive response of silicon (Si) at 5, 10, and 35 days. The material was examined to detect CD45, a protein tyrosine phosphatase (PTP) expressed by activated microglia and macrophages. The 3C-SiC surface revealed limited immunoresponse and significantly reduced microglia compared to Si substrate.
Collapse
Affiliation(s)
- Christopher L Frewin
- Electrical Engineering and Molecular Pharmacology and Physiology department, University of South Florida, Tampa, Florida 33613, USA.
| | | | | | | |
Collapse
|
33
|
Jiang J, Wang J, Zhang X, Huo K, Wong HM, Yeung KW, Zhang W, Hu T, Chu PK. Activation of mitogen-activated protein kinases cellular signal transduction pathway in mammalian cells induced by silicon carbide nanowires. Biomaterials 2010; 31:7856-62. [DOI: 10.1016/j.biomaterials.2010.07.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Accepted: 07/04/2010] [Indexed: 12/31/2022]
|
34
|
Fan J, Chu PK. Group IV nanoparticles: synthesis, properties, and biological applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:2080-98. [PMID: 20730824 DOI: 10.1002/smll.201000543] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this review, the emerging roles of group IV nanoparticles including silicon, diamond, silicon carbide, and germanium are summarized and discussed from the perspective of biologists, engineers, and medical practitioners. The synthesis, properties, and biological applications of these new nanomaterials have attracted great interest in the past few years. They have gradually evolved into promising biomaterials due to their innate biocompatibility; toxic ions are not released when they are used in vitro or in vivo, and their wide fluorescence spectral regions span the near-infrared, visible, and near-ultraviolet ranges. Additionally, they generally have good resistance against photobleaching and have lifetimes on the order of nanoseconds to microseconds, which are suitable for bioimaging. Some of the materials possess unique mechanical, chemical, or physical properties, such as ultrachemical and thermal stability, high hardness, high photostability, and no blinking. Recent data have revealed the superiority of these nanoparticles in biological imaging and drug delivery.
Collapse
Affiliation(s)
- Jiyang Fan
- Department of Physics, Southeast University, Nanjing 211189, PR China.
| | | |
Collapse
|
35
|
Vörös M, Deák P, Frauenheim T, Gali A. The absorption of oxygenated silicon carbide nanoparticles. J Chem Phys 2010; 133:064705. [DOI: 10.1063/1.3464482] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
36
|
Rekola J, Lassila LVJ, Hirvonen J, Lahdenperä M, Grenman R, Aho AJ, Vallittu PK. Effects of heat treatment of wood on hydroxylapatite type mineral precipitation and biomechanical properties in vitro. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:2345-2354. [PMID: 20464458 DOI: 10.1007/s10856-010-4087-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Accepted: 04/26/2010] [Indexed: 05/29/2023]
Abstract
Wood is a natural fiber reinforced composite. It structurally resembles bone tissue to some extent. Specially heat-treated birch wood has been used as a model material for further development of synthetic fiber reinforced composites (FRC) for medical and dental use. In previous studies it has been shown, that heat treatment has a positive effect on the osteoconductivity of an implanted wood. In this study the effects of two different heat treatment temperatures (140 and 200 degrees C) on wood were studied in vitro. Untreated wood was used as a control material. Heat treatment induced biomechanical changes were studied with flexural and compressive tests on dry birch wood as well as on wood after 63 days of simulated body fluid (SBF) immersion. Dimensional changes, SBF sorption and hydroxylapatite type mineral formation were also assessed. The results showed that SBF immersion decreases the biomechanical performance of wood and that the heat treatment diminishes the effect of SBF immersion on biomechanical properties. With scanning electron microscopy and energy dispersive X-ray analysis it was shown that hydroxylapatite type mineral precipitation formed on the 200 degrees C heat-treated wood. An increased weight gain of the same material during SBF immersion supported this finding. The results of this study give more detailed insight of the biologically relevant changes that heat treatment induces in wood material. Furthermore the findings in this study are in line with previous in vivo studies.
Collapse
Affiliation(s)
- J Rekola
- Department of Biomaterials Science, University of Turku, Turku, Finland.
| | | | | | | | | | | | | |
Collapse
|
37
|
Kalmodia S, Molla AR, Basu B. In vitro cellular adhesion and antimicrobial property of SiO2-MgO-Al2O3-K2O-B2O3-F glass ceramic. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:1297-1309. [PMID: 19936888 DOI: 10.1007/s10856-009-3942-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Accepted: 11/10/2009] [Indexed: 05/28/2023]
Abstract
The aim of the present study was to examine the cellular functionality and antimicrobial properties of SiO(2)-MgO-Al(2)O(3)-K(2)O-B(2)O(3)-F glass ceramics (GC) containing fluorophlogopite as major crystalline phase. The cellular morphology and cell adhesion study using human osteoblast-like Saos-2 cells and mouse fibroblast L929 cells reveals good in vitro cytocompatibility of GC. The potential use of the GC for biomedical application was also assessed by in vitro synthesis of the alkaline phosphatase (ALP) activity of Saos-2 cells. It is proposed that B(2)O(3) actively enhances the cell adhesion and supports osteoconduction process, whereas, fluorine component significantly influences cell viability. The Saos-2 and L929 cells on GC shows extensive multidirectional network of actin cytoskeleton. The in vitro results of this study illustrate how small variation in fluorine and boron in base glass composition influences significantly the biocompatibility and antimicrobial bactericidal property, as evaluated using a range of biochemical assays. Importantly, it shows that the cell viability and osteoconduction can be promoted in glass ceramics with lower fluorine content. The underlying reasons for difference in biological properties are analyzed and reported. It is suggested that oriented crystalline morphology in the lowest fluorine containing glass ceramic enhanced cellular spreading. Overall, the in vitro cell adhesion, cell flattening, cytocompatibility and antimicrobial study of the three different compositions of glass ceramic clearly reveals that microstructure and base glass composition play an important role in enhancing the cellular functionality and antimicrobial property.
Collapse
Affiliation(s)
- Sushma Kalmodia
- Department of Materials and Metallurgical Engineering, Indian Institute of Technology Kanpur, Kanpur, India
| | | | | |
Collapse
|
38
|
The effect of heat treatment of wood on osteoconductivity. Acta Biomater 2009; 5:1596-604. [PMID: 19231305 DOI: 10.1016/j.actbio.2009.01.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2008] [Revised: 12/09/2008] [Accepted: 01/13/2009] [Indexed: 11/22/2022]
Abstract
Wood is a natural porous fibre composite, which has some structural similarities to bone. Recently, it has been used as a modelling material in developing synthetic fibre-reinforced composite to be used as load-bearing non-metallic artificial bone material. In this study, the behaviour of wood implanted into bone was studied in vivo in the femur bone of the rabbit. Wood was pre-treated by heat, which altered its chemical composition and structure, as well as the biomechanical properties. In the heat treatment, wood's dimensional stability is enhanced, equilibrium moisture content reduces and the biological durability increases. Cone-shaped implants were manufactured from heat-treated (at 200 and 140 degrees C) birch wood (Betula pubescens) and from untreated birch. A total of 62 implants were placed in the distal femur of 50 white New Zealand rabbits. The behaviour of the implants was studied at 4, 8 and 20 weeks with histological and histometrical analysis. Osteoconductive contact line and the presence of fibrous tissue and foreign body reaction were determined. The amount of fibrous tissue diminished with time, and the absence of foreign body reaction was found to be in correlation to the amount of heat treatment. Histologically found contact between the implant and the host bone at the interface was significantly more abundant in the 200 degrees C group (avg. 12.8%) vs. the 140 degrees C (avg. 2.7%) and the untreated groups (avg. 0.6%). It was observed that the heat treatment significantly modified the biological behaviour of the implanted wood. The changes of the wood by heat treatment showed a positive outcome concerning osteoconductivity of the material.
Collapse
|
39
|
Luo M, Hou GY, Yang JF, Fang JZ, Gao JQ, Zhao L, Li X. Manufacture of fibrous β-Si3N4-reinforced biomorphic SiC matrix composites for bioceramic scaffold applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2008.11.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
40
|
Qian J, Kang Y, Wei Z, Zhang W. Fabrication and characterization of biomorphic 45S5 bioglass scaffold from sugarcane. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2008.11.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
41
|
González P, Borrajo JP, Serra J, Chiussi S, León B, Martínez-Fernández J, Varela-Feria FM, de Arellano-López AR, de Carlos A, Muñoz FM, López M, Singh M. A new generation of bio-derived ceramic materials for medical applications. J Biomed Mater Res A 2009; 88:807-13. [PMID: 18384165 DOI: 10.1002/jbm.a.31951] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A new generation of bio-derived ceramics can be developed as a base material for medical implants. Specific plant species are used as templates on which innovative transformation processes can modify the chemical composition maintaining the original biostructure. Building on the outstanding mechanical properties of the starting lignocellulosic templates, it is possible to develop lightweight and high-strength scaffolds for bone substitution. In vitro and in vivo experiments demonstrate the excellent biocompatibility of this new silicon carbide material (bioSiC) and how it gets colonized by the hosting bone tissue because of its unique interconnected hierarchic porosity, which opens the door to new biomedical applications.
Collapse
Affiliation(s)
- P González
- Departamento de Física Aplicada, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Qian J, Kang Y, Zhang W, Li Z. Fabrication, chemical composition change and phase evolution of biomorphic hydroxyapatite. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:3373-3383. [PMID: 18545942 DOI: 10.1007/s10856-008-3475-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2008] [Accepted: 05/15/2008] [Indexed: 05/26/2023]
Abstract
Biomorphous, highly porous hydroxyapatite (HA) ceramics have been prepared by a combination of a novel biotemplating process and a sol-gel method, using natural plants like cane and pine as biotemplates. A HA sol was first synthesized from triethylphosphate and calcium nitrate used as the phosphorus and calcium precursors, respectively, and infiltrated into the biotemplates, and subsequently they were sintered at elevated temperatures to obtain porous HA ceramics. The microstructural changes, phase and chemical composition evolutions during the biotemplate-to-HA conversion were investigated by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and Fourier-transform infrared (FT-IR) spectroscopy. The XRD and FT-IR analysis revealed that the dominant phase of the product was HA, which contained a small amount of mixed A/B-type carbonated HA, closely resembling that of human bone apatite. Moreover, the appearance of a small amount of secondary phase CaCO(3) seemed unavoidable. The HA was not transformed to the other calcium phosphate phases up to 1400 degrees C, but it contained a trace amount of CaO when sintered at above 1100 degrees C. The possible transformation mechanism was proposed. The SEM observation and mechanical property test showed that as-produced HA ceramics retained the macro-/micro-porous structures of the biotemplates with high precision, and possessed acceptable mechanical strength, which is suggested to be potential scaffolds for bone tissue engineering.
Collapse
Affiliation(s)
- Junmin Qian
- Xi'an Jiaotong University, Xi'an, 710049, China.
| | | | | | | |
Collapse
|
43
|
Abstract
SiC is a biocompatible material and a candidate as a transducer for biosensors. Here we
have investigated the possibility to functionalize SiC with biomolecules. We have also processed
very simple devices and performed electrical characterization. Double polished SiC samples with a
C-face substrate and Si-face low doped epilayer have been functionalized on both sides. The SiC
was first treated by HF in order to remove the native oxide, partly successful on the Si-face side but
probably not on the C-face side. MPTMS, 3-mercaptopropyl trimethoxysilane, was chosen as the
biomolecule since it has both a silanol group to be used as an anchoring group to the substrate and a
thiol group available for further linking possibilities. The functionalization was evaluated by XPS,
contact angle experiments, AFM and electrical measurements. The MPTMS molecules attached
with the thiol (or sulphur containing) group pointing out from the surface on both faces of the SiC.
Interesting differences between the two faces are however revealed by the analysis.
Collapse
|
44
|
Yakimova R, Steinhoff G, Petoral RM, Vahlberg C, Khranovskyy V, Yazdi GR, Uvdal K, Lloyd Spetz A. Novel material concepts of transducers for chemical and biosensors. Biosens Bioelectron 2007; 22:2780-5. [PMID: 17289367 DOI: 10.1016/j.bios.2006.12.032] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2006] [Revised: 12/19/2006] [Accepted: 12/20/2006] [Indexed: 11/16/2022]
Abstract
The objectives of this work are to contribute to the knowledge about physical and chemical properties of WBG semiconductors, such as ZnO and GaN towards development of advanced bio- and chemical sensors. For the semiconductors, growth techniques typically yielding single crystal material are applied. Thin epitaxial quality films of ZnO and GaN are fabricated on SiC or sapphire substrates. An emphasis is given to ZnO due to the interesting combination of the semiconductor and oxide properties. Surface bio-functionalization of ZnO is performed by APTES, MPA or MP-TMS molecules. We have compared some of the results to (hydroxylated) GaN surfaces functionalized by MP-TMS. The covalent attachment of the self-assembled biomolecular layers has been proven by XPS analysis. For complementary electrical characterization impedance spectroscopy measurements were performed. The results are intended to serve the realization of bioelectronic transducer devices based on SiC or GaN transistors with a ZnO gate layer. To take advantage of the catalytic properties of ZnO, initial prototypes of chemical sensors for gas sensing are processed on ZnO deposited either on SiC or on sapphire and they are further tested for the response to reducing or oxidizing gas ambient. The sensor devices show sensitivity to oxygen in the surface resistivity mode while a Pt Schottky contact ZnO/SiC device responds to reducing gases. These results are compared to published results on Pt/GaN Schottky diodes.
Collapse
Affiliation(s)
- R Yakimova
- Linköping University, Department of Physics, Chemistry and Biology, SE-58183 Linköping, Sweden.
| | | | | | | | | | | | | | | |
Collapse
|
45
|
de Carlos A, Borrajo JP, Serra J, González P, León B. Behaviour of MG-63 osteoblast-like cells on wood-based biomorphic SiC ceramics coated with bioactive glass. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2006; 17:523-9. [PMID: 16691350 DOI: 10.1007/s10856-006-8935-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2005] [Accepted: 08/09/2005] [Indexed: 05/09/2023]
Abstract
The aim of this study was to test the in vitro cytotoxicity of wood-based biomorphic Silicon Carbide (SiC) ceramics coated with bioactive glass, using MG-63 human osteoblast-like cells, with a view to their application in bone implantology. To better understand the scope of this study, it should be taken into account that biomorphic SiC ceramics have only recently been developed and this innovative product has important properties such as interconnected porosity, high strength and toughness, and easy shaping. In the solvent extraction test, all the extracts had almost no effect on cellular activity even at 100% concentration, and cells incubated in the bioactive glass-coated SiC ceramics extracts showed a proliferation rate similar to that of the Thermanox control. There were no significant differences when the cellular attachment response of the cells on the wood-based biomorphic SiC ceramics, uncoated or coated with bioactive glass, was compared to the one exhibited by reference materials like Ti6Al4V and bulk bioactive glass. This fact looks very promising for biomedical applications.
Collapse
Affiliation(s)
- A de Carlos
- Dpto. Bioquímica, Genética e Inmunología, University of Vigo, 36200, Vigo, Spain
| | | | | | | | | |
Collapse
|
46
|
Abstract
The aim of this study was to test the in vitro cytotoxicity of wood-based
biomorphic Silicon Carbide (SiC) ceramics, using MG-63 human osteoblast-like cells. This innovative material has been recently developed and it exhibits unique mechanical properties towards their application in biomedical technology. In the solvent extraction test the SiC ceramic extracts had almost no effect on cellular activity even at 100% concentration. A similar behaviour was found for Ti6Al4V and bioactive glass, used as reference materials. The results of the cell morphology and the cellular attachment response have also demonstrated that the in vitro performance of these biomorphic SiC ceramics is qualitatively comparable to that produced by titanium alloy and bioactive glass, which seems very promising.
Collapse
|
47
|
Borrajo J, González P, Liste S, Serra J, Chiussi S, León B, Pérez-Amor M. The role of the thickness and the substrate on the in vitro bioactivity of silica-based glass coatings. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2005. [DOI: 10.1016/j.msec.2005.01.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
48
|
Cicero G, Galli G, Catellani A. Interaction of Water Molecules with SiC(001) Surfaces. J Phys Chem B 2004. [DOI: 10.1021/jp0471599] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giancarlo Cicero
- Lawrence Livermore National Laboratory, Post Office Box 808, Livermore, California 94550
| | - Giulia Galli
- Lawrence Livermore National Laboratory, Post Office Box 808, Livermore, California 94550
| | | |
Collapse
|