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Gao D, Dou J, Hu C, Yu H, Chen C. Corrosion behaviour of micro-arc oxidation coatings on Mg–2Sr prepared in poly(ethylene glycol)-incorporated electrolytes. RSC Adv 2018; 8:3846-3857. [PMID: 35542914 PMCID: PMC9077788 DOI: 10.1039/c7ra12497j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 01/08/2018] [Indexed: 11/21/2022] Open
Abstract
The highest corrosion resistance and lowest biodegradation are observed on the ceramic coating prepared in electrolytes containing 8 g L−1 PEG1000.
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Affiliation(s)
- Dandan Gao
- Shenzhen Research Institute of Shandong University
- Shenzhen 518057
- P. R. China
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Shandong University)
- Ministry of Education
| | - Jinhe Dou
- Shenzhen Research Institute of Shandong University
- Shenzhen 518057
- P. R. China
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- (Ministry of Education)
| | - Cheng Hu
- Shenzhen Research Institute of Shandong University
- Shenzhen 518057
- P. R. China
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- (Ministry of Education)
| | - Huijun Yu
- Shenzhen Research Institute of Shandong University
- Shenzhen 518057
- P. R. China
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Shandong University)
- Ministry of Education
| | - Chuanzhong Chen
- Shenzhen Research Institute of Shandong University
- Shenzhen 518057
- P. R. China
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- (Ministry of Education)
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Moon JW, Sohn DS, Heo JU, Kim JS. Comparison of two kinds of bovine bone in maxillary sinus augmentation: a histomorphometric study. IMPLANT DENT 2016; 24:19-24. [PMID: 25621547 DOI: 10.1097/id.0000000000000187] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The purpose of this study was to compare the histomorphometric from sinus augmentation with calcium-phosphate nanocrystal-coated bovine bone (Biocera) and anorganic bovine bone matrix (Bio-Oss). MATERIALS AND METHODS Bilateral maxillary sinus augmentations were performed on 5 patients with delayed placement of implants. The lateral bony window was created using a piezoelectric saw, and the sinus membrane was elevated to make a new compartment. Bio-Oss was grafted in one sinus as the control group and Biocera was grafted in the opposite sinus as the test group. The bony window was repositioned over the bone graft. In all cases, samples were taken for biopsy at the time of implant placement, 6 to 8 months after the grafting procedure. Independent t tests were used to examine between-group differences. RESULTS None of the 5 patients had complications during healing period. Histomorphometrically, the Bio-Oss group showed 28.46% (±5.28%) of newly formed bone. Biocera group showed 29.94% (±8.72%) of newly formed bone. Newly formed bone along inner surface of repositioned bony window area showed more mature and dense bone structure than new bone formed along bone graft. CONCLUSIONS This study revealed that both bovine bone grafts were considered as suitable bone graft materials for maxillary sinus augmentation.
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Affiliation(s)
- Jee-Won Moon
- *Assistant Professor, Department of Dentistry and Oral and Maxillofacial Surgery, Catholic University Hospital of Daegu, Daegu, Korea. †Professor, Department of Dentistry and Oral and Maxillofacial Surgery, Catholic University Hospital of Daegu, Daegu, Korea. ‡Private Practice, Busan, Korea. §Private Practice, Jeonju, Korea
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Sculean A, Nikolidakis D, Nikou G, Ivanovic A, Chapple ILC, Stavropoulos A. Biomaterials for promoting periodontal regeneration in human intrabony defects: a systematic review. Periodontol 2000 2015; 68:182-216. [DOI: 10.1111/prd.12086] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2014] [Indexed: 11/29/2022]
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Pan Y, Chen C, Wang D, Zhao T. Improvement of corrosion and biological properties of microarc oxidized coatings on Mg–Zn–Zr alloy by optimizing negative power density parameters. Colloids Surf B Biointerfaces 2014; 113:421-8. [DOI: 10.1016/j.colsurfb.2013.09.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 09/17/2013] [Accepted: 09/19/2013] [Indexed: 11/26/2022]
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Pan Y, Chen C, Wang D, Zhao T. Effects of phosphates on microstructure and bioactivity of micro-arc oxidized calcium phosphate coatings on Mg–Zn–Zr magnesium alloy. Colloids Surf B Biointerfaces 2013; 109:1-9. [DOI: 10.1016/j.colsurfb.2013.03.026] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Revised: 03/10/2013] [Accepted: 03/19/2013] [Indexed: 10/27/2022]
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Okada M, Furuzono T. Hydroxylapatite nanoparticles: fabrication methods and medical applications. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2012; 13:064103. [PMID: 27877527 PMCID: PMC5099760 DOI: 10.1088/1468-6996/13/6/064103] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Accepted: 11/19/2012] [Indexed: 05/30/2023]
Abstract
Hydroxylapatite (or hydroxyapatite, HAp) exhibits excellent biocompatibility with various kinds of cells and tissues, making it an ideal candidate for tissue engineering, orthopedic and dental applications. Nanosized materials offer improved performances compared with conventional materials due to their large surface-to-volume ratios. This review summarizes existing knowledge and recent progress in fabrication methods of nanosized (or nanostructured) HAp particles, as well as their recent applications in medical and dental fields. In section 1, we provide a brief overview of HAp and nanoparticles. In section 2, fabrication methods of HAp nanoparticles are described based on the particle formation mechanisms. Recent applications of HAp nanoparticles are summarized in section 3. The future perspectives in this active research area are given in section 4.
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Affiliation(s)
- Masahiro Okada
- Department of Biomaterials, Osaka Dental University, 8-1 Kuzuha-Hanazono, Hirakata, Osaka, 573-1121, Japan
| | - Tsutomu Furuzono
- Department of Biomedical Engineering, School of Biology-Oriented Science and Technology, Kinki University, 930 Nishi-Mitani, Kinokawa, Wakayama, 649-6493, Japan
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7
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Clinical study on the influence of hydroxyapatite on apexogenesis in monkeys. ACTA VET-BEOGRAD 2008. [DOI: 10.2298/avb0804395p] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Hwang KS, Jeon KO, Jeon YS, Kim BH. Hydroxyapatite forming ability of electrostatic spray pyrolysis derived calcium phosphate nano powder. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2007; 18:619-22. [PMID: 17546422 DOI: 10.1007/s10856-007-2310-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2005] [Accepted: 10/21/2005] [Indexed: 05/15/2023]
Abstract
A novel fabrication technique, i.e., electrostatic spray pyrolysis (ESP), has been used in this study to prepare calcium phosphate nano powders. Final annealing was done at 400 degrees C for 30 min in air. The hydroxyapatite-forming ability of the annealed powder has been investigated in Eagle's minimum essential medium solution. X-ray diffracton, field emission scanning electron microscope, energy dispersive X-ray spectroscope, and Fourier transform infrared spectroscope were employed to characterize the annealed powders after immersion. The powder with an amorphous structure induced hydroxyapatite formation on their surfaces after immersion for 15 days.
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Affiliation(s)
- Kyu-Seog Hwang
- Department of Applied Optics and Institute of Photoelectronic Technology, Nambu University, 864-1 Wolgye-dong, Gwangsan-gu, Gwangju, 506-824, South Korea.
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Abstract
Over the past 30 years, an enormous array of biomaterials proposed as ideal scaffolds for cell growth have emerged, yet few have demonstrated clinical efficacy. Biomaterials, regardless of whether they are permanent or biodegradable, naturally occurring or synthetic, need to be biocompatible, ideally osteoinductive, osteoconductive, integrative, porous and mechanically compatible with native bone to fulfill their desired role in bone tissue engineering. These materials provide cell anchorage sites, mechanical stability and structural guidance and in vivo, provide the interface to respond to physiologic and biologic changes as well as to remodel the extracellular matrix in order to integrate with the surrounding native tissue. Calcium phosphate ceramics and bioactive glasses were introduced more than 30 years ago as bone substitutes. These materials are considered bioactive as they bond to bone and enhance bone tissue formation. The bioactivity property has been attributed to the similarity between the surface composition and structure of bioactive materials, and the mineral phase of bone. The drawback in using bioactive glasses and calcium phosphate ceramics is that close proximity to the host bone is necessary to achieve osteoconduction. Even when this is achieved, new bone growth is often strictly limited because these materials are not osteoinductive in nature. Bone has a vast capacity for regeneration from cells with stem cell characteristics. Moreover, a number of different growth factors including bone morphogenetic proteins, have been demonstrated to stimulate bone growth, collagen synthesis and fracture repair both in vitro and in vivo. Attempts to develop a tissue-engineering scaffold with both osteoconductivity and osteoinductivity have included loading osteoinductive proteins and/or osteogenic cells on the traditional bioactive materials. Yet issues that must be considered for the effective application of bioceramics in the field of tissue engineering are the degree of bioresorption and the poor mechanical strength. The synthesis of a new generation of biomaterials that can specifically serve as tissue engineering scaffolds for drug and cell delivery is needed. Nanotechnology can provide an alternative way of processing porous bioceramics with high mechanical strength and enhanced bioactivity and resorbability.
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Affiliation(s)
- Ahmed El-Ghannam
- Center for Biomedical Engineering, Graduate School and Center for Oral Health Research, University of Kentucky Dental School, Lexington, KY 40506, USA.
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Hong JY, Kim YJ, Lee HW, Lee WK, Ko JS, Kim HM. Osteoblastic cell response to thin film of poorly crystalline calcium phosphate apatite formed at low temperatures. Biomaterials 2003; 24:2977-84. [PMID: 12895569 DOI: 10.1016/s0142-9612(03)00121-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The response of osteoblastic cells to a thin film of poorly crystalline calcium phosphate apatite crystals (PCA) was examined in vitro. The PCA thin film was prepared on polystyrene culture dishes using highly metastable calcium phosphate ion solution at low temperatures. The PCA thin film was formed through fusion and transformation of granular calcium phosphate particles, which had initially formed on the surface, into a film of calcium phosphate apatite crystal. The PCA thin film was used for cell culture without additional surface treatment. The osteoblastic cell behaviors including adhesion, proliferation, expression of the marker genes, and calcified matrix formation were examined on the PCA thin film using primary osteoblasts or MC3T3-E1 cells. The cells were well attached and had spread in a slender shape over the PCA thin film. The extent of cell proliferation on the PCA thin film is as much as on the plain dishes. In addition, a much larger number of calcified nodules had formed on the PCA thin film than on the plain dish. The expression of the marker genes such as alkaline phosphatase, osteocalcin, osteopontin, osteonectin was apparent. These results demonstrate that the osteoblasts exhibit a full spectrum of cellular activity including the adequate differentiation on the PCA thin film. Therefore, a PCA thin film can be used as a coating material for biomaterials where the surface is not adequate for inducing the full activity of bone cells.
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Affiliation(s)
- Ji-Yeon Hong
- Laboratory for the Study of Molecular Biointerfaces, Department of Craniomaxillofacial Cell and Developmental Biology, College of Dentistry, South Korea
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Kim HM, Kim Y, Park SJ, Rey C, Lee HM, Glimcher MJ, Ko JS. Thin film of low-crystalline calcium phosphate apatite formed at low temperature. Biomaterials 2000; 21:1129-34. [PMID: 10817265 DOI: 10.1016/s0142-9612(99)00265-3] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Surface modification of biomaterials to improve biocompatibility without changing their bulk properties is desired for many clinical applications and has become an emerging technology in biomaterial research and industry. In the present study, a simple method of coating the solid surfaces of metals, organic tissue matrices, glasses, inorganic ceramics as well as organic polymers with a thin film of low-crystalline apatite crystals (LCA) was developed. Acidic solution containing calcium and phosphate ions was neutralized with alkaline solution to form calcium phosphate precipitates at low temperature. Precipitates of solid calcium phosphate particles were, then, removed by filtration. Concentration of free ions in the filtered ion solution which were not involved in the formation of calcium phosphate precipitate was high enough to induce the heterogeneous nucleation on the solid surfaces at low temperature. Thin layers of calcium phosphate crystals were formed on the surfaces of metals, glasses, inorganic ceramics, organic polymers including hydrophobic ones, and biological tissue matrices with this solution. The thin layer of crystals consisted of poorly crystalline calcium phosphate apatite crystals which contain high amount of labile ions like bone crystals and did not dissolve in the physiologic solutions. Various cells attached to this crystal layer and proliferated well.
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Affiliation(s)
- H M Kim
- Department of Oral Anatomy and Dental Research Institute, College of Dentistry, Seoul National University, South Korea
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Daculsi G, Bouler JM, LeGeros RZ. Adaptive crystal formation in normal and pathological calcifications in synthetic calcium phosphate and related biomaterials. INTERNATIONAL REVIEW OF CYTOLOGY 1997; 172:129-91. [PMID: 9102393 DOI: 10.1016/s0074-7696(08)62360-8] [Citation(s) in RCA: 137] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Mineralization and crystal deposition are natural phenomena widely distributed in biological systems from protozoa to mammals. In mammals, normal and pathological calcifications are observed in bones, teeth, and soft tissues or cartilage. We review studies on the adaptive apatite crystal formation in enamel compared with those in other calcified tissues (e.g., dentin, bone, and fish enameloids) and in pathological calcifications, demonstrating the adaptation of these crystals (in terms of crystallinity and orientation) to specific tissues that vary in functions or vary in normal or diseased conditions. The roles of minor elements, such as carbonate, magnesium, fluoride, hydrogen phosphate, pyrophosphate, and strontium ions, on the formation and transformation of biologically relevant calcium phosphates are summarized. Another adaptative process of crystals in biology concerns the recent development of calcium phosphate ceramics and other related biomaterials for bone graft. Bone graft materials are available as alternatives to autogeneous bone for repair, substitution, or augmentation. This paper discusses the adaptive crystal formation in mineralized tissues induced by calcium phosphate and related bone graft biomaterials during bone repair.
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Affiliation(s)
- G Daculsi
- Centre de Recherche Interdisciplinaire sur les Tissus Calcifiés et les Biomatériaux, Faculté de Chirurgie Dentaire, Nantes, France
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Vidal BDC. The Use of a Complex of Collagen Type I with Hydroxyapatite from Bone, as a Bone Implant Substitute: An Experimental Approach. ACTA ACUST UNITED AC 1996; 2:151-60. [DOI: 10.1089/ten.1996.2.151] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abramson S, Alexander H, Best S, Bokros J, Brunski JB, Colas A, Cooper SL, Curtis J, Haubold A, Hench LL, Hergenrother RW, Hoffman AS, Hubbell JA, Jansen JA, King MW, Kohn J, Lamba NM, Langer R, Migliaresi C, More RB, Peppas NA, Ratner BD, Visser SA, Recum AV, Weinberg S, Yannas IV. Classes of Materials Used in Medicine. Biomater Sci 1996. [DOI: 10.1016/b978-012582460-6/50005-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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15
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Galgut PN, Waite IM, Brookshaw JD, Kingston CP. A 4-year controlled clinical study into the use of a ceramic hydroxylapatite implant material for the treatment of periodontal bone defects. J Clin Periodontol 1992; 19:570-7. [PMID: 1332987 DOI: 10.1111/j.1600-051x.1992.tb00685.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
10 patients with chronic adult periodontitis who had greater than 1 tooth with infra-bony pockets were treated at the test defects by periodontal flap procedures with implantation of hydroxylapatite particles; the control defects were treated by the same surgical procedures but without the implant. A total of 58 test defects and 59 control defects were treated. Each defect had measurements carried out at given sites on the involved tooth surfaces, the sites being considered for subsequent tabulation purposes under the category of shallow (less than 3 mm) moderate (3-6 mm) and deep (greater than 6 mm) initial pocket depths. There were 146 and 152 shallow sites, 216 and 241 moderate sites and 140 and 133 deep sites, at test and control sites, respectively. Measurements of recession, probing pocket depths and probing attachment levels were made at 6 months and 1, 2, 3 and 4 years. At all sites over the period of the study, for the moderate and deep initial pockets there was a significant reduction in probing depths and an increase in the probing attachment levels. At the 4th year of assessment for the initially deep pockets, the reduction in probing depths was significantly greater for the sites treated with the implant material. In view of the difficult clinical problem posed by the treatment of teeth with deeper periodontal bone defects, further research using either this type of implant material or similar material should be considered.
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Affiliation(s)
- P N Galgut
- University College, Middlesex School of Dentistry, London, UK
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Galgut PN, Verrier J, Waite IM, Linney A, Cornick DE. Computerized densitometric analysis of interproximal bone levels in a controlled clinical study into the treatment of periodontal bone defects with ceramic hydroxyapatite implant material. J Periodontol 1991; 62:44-50. [PMID: 1848289 DOI: 10.1902/jop.1991.62.1.44] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The aim of this controlled clinical study was to utilize computer-assisted densitometric analysis of radiographs to assess the effectiveness of treating periodontal osseous defects with a sintered hydroxyapatite implant material. It was found that over the 2-year period of the study for the osseous defects treated by the implant material, there was a gain in the height of the hard tissue relative to the cemento-enamel junction; this gain was statistically significant compared with the results for the control sites.
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Affiliation(s)
- P N Galgut
- University College, London Dental School, UK
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