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Bandyopadhyay A, Mitra I, Goodman SB, Kumar M, Bose S. Improving Biocompatibility for Next Generation of Metallic Implants. PROGRESS IN MATERIALS SCIENCE 2023; 133:101053. [PMID: 36686623 PMCID: PMC9851385 DOI: 10.1016/j.pmatsci.2022.101053] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The increasing need for joint replacement surgeries, musculoskeletal repairs, and orthodontics worldwide prompts emerging technologies to evolve with healthcare's changing landscape. Metallic orthopaedic materials have a shared application history with the aerospace industry, making them only partly efficient in the biomedical domain. However, suitability of metallic materials in bone tissue replacements and regenerative therapies remains unchallenged due to their superior mechanical properties, eventhough they are not perfectly biocompatible. Therefore, exploring ways to improve biocompatibility is the most critical step toward designing the next generation of metallic biomaterials. This review discusses methods of improving biocompatibility of metals used in biomedical devices using surface modification, bulk modification, and incorporation of biologics. Our investigation spans multiple length scales, from bulk metals to the effect of microporosities, surface nanoarchitecture, and biomolecules such as DNA incorporation for enhanced biological response in metallic materials. We examine recent technologies such as 3D printing in alloy design and storing surface charge on nanoarchitecture surfaces, metal-on-metal, and ceramic-on-metal coatings to present a coherent and comprehensive understanding of the subject. Finally, we consider the advantages and challenges of metallic biomaterials and identify future directions.
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Affiliation(s)
- Amit Bandyopadhyay
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920
| | - Indranath Mitra
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920
| | - Stuart B. Goodman
- Department of Orthopedic Surgery, Stanford University Medical Center, Redwood City, CA 94063
| | | | - Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920
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Enax J, Meyer F, Schulze zur Wiesche E, Epple M. On the Application of Calcium Phosphate Micro- and Nanoparticles as Food Additive. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4075. [PMID: 36432359 PMCID: PMC9693044 DOI: 10.3390/nano12224075] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/12/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
The human body needs calcium and phosphate as essential nutrients to grow bones and teeth, but they are also necessary for many other biochemical purposes (e.g., the biosynthesis of phospholipids, adenosine triphosphate, ATP, or DNA). The use of solid calcium phosphate in particle form as a food additive is reviewed and discussed in terms of bioavailability and its safety after ingestion. The fact that all calcium phosphates, such as hydroxyapatite and tricalcium phosphate, are soluble in the acidic environment of the stomach, regardless of the particle size or phase, means that they are present as dissolved ions after passing through the stomach. These dissolved ions cannot be distinguished from a mixture of calcium and phosphate ions that were ingested separately, e.g., from cheese or milk together with soft drinks or meat. Milk, including human breast milk, is a natural source of calcium and phosphate in which calcium phosphate is present as nanoscopic clusters (nanoparticles) inside casein (protein) micelles. It is concluded that calcium phosphates are generally safe as food additives, also in baby formula.
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Affiliation(s)
- Joachim Enax
- Dr. Kurt Wolff GmbH & Co. KG, Research Department, Johanneswerkstr. 34-36, 33611 Bielefeld, Germany
| | - Frederic Meyer
- Dr. Kurt Wolff GmbH & Co. KG, Research Department, Johanneswerkstr. 34-36, 33611 Bielefeld, Germany
| | - Erik Schulze zur Wiesche
- Dr. Kurt Wolff GmbH & Co. KG, Research Department, Johanneswerkstr. 34-36, 33611 Bielefeld, Germany
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany
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Jansen ID, van Velzen T, de Vries TJ, Szulcek R, van Loon JJWA. Real-time quantification of osteoclastic resorptive activity by electric cell-substrate impedance sensing. Front Cell Dev Biol 2022; 10:921066. [PMID: 36060806 PMCID: PMC9437204 DOI: 10.3389/fcell.2022.921066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 07/13/2022] [Indexed: 11/13/2022] Open
Abstract
In several diseases, bone resorption by osteoclasts is dysregulated. Thus far, no simple technique for real-time measurement of resorption is available. Here, we introduce an impedimetric bioassay for real-time monitoring of resorption by making use of the electrical insulating properties of the resorbable substrate calcium phosphate. Different chemical stimuli were applied to (pre)osteoclasts cultured on a layer of calcium phosphate in multi-well plates containing electrodes. By this, osteoclast activity can be measured continuously over days, and the effects of stimulating or inhibiting factors can be quantified. When cells were cultured in the presence of an inflammatory factor such as IL-1β, the resorptive activity started earlier. The measured decline in resistance was higher at culture day 5 than at cultures with M-CSF or M-CSF + RANKL (M-CSF norm. Resistance = 1, M-CSF + RANKL = 0.7, M-CSF + RANKL + IL-1β = 0.5). However, at day 11, this difference had nearly disappeared. Likewise, bisphosphonates were shown to inhibit osteoclastic activity. Our findings illustrate the importance of real-time monitoring; wherefore, this method has high potential not only for the study of osteoclast resorptive activity in the context of osteoclast function and diseases but also could find application in high-throughput drug-testing studies.
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Affiliation(s)
- Ineke D.C. Jansen
- Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Thijs van Velzen
- Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Teun J. de Vries
- Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Robert Szulcek
- Department of Pulmonary Diseases, Amsterdam UMC, VU University Medical Center, Amsterdam Cardiovascular Sciences (ACS), Amsterdam, Netherlands
- Laboratory of in vitro Modeling Systems of Pulmonary and Thrombotic Diseases, Institute of Physiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- German Heart Center Berlin, Berlin, Germany
| | - Jack J. W. A. van Loon
- Life Support and Physical Sciences Section (TEC-MMG), European Space Agency—European Space Research and Technology Centre (ESA-ESTEC), Noordwijk, Netherlands
- DESC (Dutch Experiment Support Center), Amsterdam University Medical Center Location VUmc, Amsterdam, Netherlands
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam University Medical Center Amsterdam Bone Center (ABC), Amsterdam, Netherlands
- *Correspondence: Jack J. W. A. van Loon,
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Jia X, Zhou J, Ning J, Li M, Yao Y, Wang X, Jian Y, Zhao K. The polycaprolactone/silk fibroin/carbonate hydroxyapatite electrospun scaffold promotes bone reconstruction by regulating the polarization of macrophages. Regen Biomater 2022; 9:rbac035. [PMID: 35801011 PMCID: PMC9255275 DOI: 10.1093/rb/rbac035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 05/11/2022] [Accepted: 05/22/2022] [Indexed: 11/12/2022] Open
Abstract
Macrophages are known to modulate the osteogenic environment of bone regeneration elicited by biological bone grafts. Alteration in certain chemical components tends to affect macrophages polarization. Comparatively to hydroxyapatite (HAp), carbonate hydroxyapatite (CHA) consists of 7.4 (wt%) carbonate ions and more closely resembles the mineral content of bone. It remains unknown whether CHA scaffolds or HA scaffolds have better osteogenic properties. In this study, we fabricated PCL/SF scaffold, PCL/SF/HAp scaffold and PCL/SF/CHA scaffold using the electrospinning technique. Despite comparable mechanical properties, the PCL/SF/CHA scaffold exhibited better osteogenic properties than the PCL/SF/HAp scaffold. Although no significant differences were observed between the two scaffolds for promoting osteoblast differentiation in vitro, the PCL/SF/CHA group appeared to be more effective at promoting bone regeneration in cranial defects in vivo. The PCL/SF/CHA scaffold was found to promote macrophage polarization toward M2 via activating the JAK/STAT5 pathway which caused a pro-osteogenic microenvironment to facilitate osteoblast differentiation. The results of this study indicated a higher potential of CHA to substitute HAp in the production of bone scaffolds for better bone regeneration.
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Affiliation(s)
- Xiaoshi Jia
- Department of Prosthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Jing Zhou
- Department of Prosthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Jinqiu Ning
- Department of Prosthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Maoquan Li
- Department of Prosthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Yitong Yao
- Department of Prosthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Xiaodong Wang
- Department of Prosthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Yutao Jian
- Department of Prosthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Ke Zhao
- Department of Prosthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China
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Abdelmoneim D, Porter GC, Coates DE, Duncan WJ, Waddell JN, Hammer N, Li KC. The Effect of Low-Processing Temperature on the Physicochemical and Mechanical Properties of Bovine Hydroxyapatite Bone Substitutes. MATERIALS 2022; 15:ma15082798. [PMID: 35454491 PMCID: PMC9025514 DOI: 10.3390/ma15082798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/22/2022] [Accepted: 03/24/2022] [Indexed: 11/29/2022]
Abstract
Bovine bone grafts (BBX) require protein removal as part of the manufacturing process to reduce antigenicity and, in consequence, to be safely used in humans. Deproteinisation may have direct effects on the characteristics of the bone material and on in vivo material performance. This research aimed to comprehensively study the physicochemical and mechanical properties of BBX processed at low deproteinisation processing temperatures. Cubes of bovine bone (8 mm3) were treated with temperatures between 100 °C and 220 °C at 30 °C intervals and with pressures ranging from 1.01 to 24.58 Bar. The samples were characterised topographically and mechanically using scanning electron microscopy (SEM), atomic force microscopy (AFM), and uniaxial bending tests. The organic content and the chemical composition were determined using thermogravimetric analysis (TGA) and Fourier-transform infrared spectroscopy (FTIR). X-ray diffraction (XRD) and FTIR were also used to quantitatively determine the specimen crystallinity. Increasing temperature/pressure was associated with decreasing protein levels and compressive strength and increasing surface irregularities and crystallinity. The findings suggest that low-temperature processed bone is likely to exhibit a rapid in vivo degradation rate. The deproteinisation temperature can be adjusted to tailor the graft properties for specific applications.
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Affiliation(s)
- Dina Abdelmoneim
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New Zealand; (G.C.P.); (D.E.C.); (W.J.D.); (J.N.W.); (K.C.L.)
- Correspondence:
| | - Gemma Claire Porter
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New Zealand; (G.C.P.); (D.E.C.); (W.J.D.); (J.N.W.); (K.C.L.)
| | - Dawn Elizabeth Coates
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New Zealand; (G.C.P.); (D.E.C.); (W.J.D.); (J.N.W.); (K.C.L.)
| | - Warwick John Duncan
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New Zealand; (G.C.P.); (D.E.C.); (W.J.D.); (J.N.W.); (K.C.L.)
| | - John Neil Waddell
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New Zealand; (G.C.P.); (D.E.C.); (W.J.D.); (J.N.W.); (K.C.L.)
| | - Niels Hammer
- Division of Macroscopic and Clinical Anatomy, Gottfried Schatz Research Center, Medical University of Graz, 8010 Graz, Austria;
- Department of Orthopedic and Trauma Surgery, University of Leipzig, 04103 Leipzig, Germany
- Fraunhofer Fraunhofer Institute for Machine Tools and Forming Technology (IWU), Medical Branch, 01187 Dresden, Germany
| | - Kai Chun Li
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9016, New Zealand; (G.C.P.); (D.E.C.); (W.J.D.); (J.N.W.); (K.C.L.)
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Dorozhkin SV. Synthetic amorphous calcium phosphates (ACPs): preparation, structure, properties, and biomedical applications. Biomater Sci 2021; 9:7748-7798. [PMID: 34755730 DOI: 10.1039/d1bm01239h] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Amorphous calcium phosphates (ACPs) represent a metastable amorphous state of other calcium orthophosphates (abbreviated as CaPO4) possessing variable compositional but rather identical glass-like physical properties, in which there are neither translational nor orientational long-range orders of the atomic positions. In nature, ACPs of a biological origin are found in the calcified tissues of mammals, some parts of primitive organisms, as well as in the mammalian milk. Manmade ACPs can be synthesized in a laboratory by various methods including wet-chemical precipitation, in which they are the first solid phases, precipitated after a rapid mixing of aqueous solutions containing dissolved ions of Ca2+ and PO43- in sufficient amounts. Due to the amorphous nature, all types of synthetic ACPs appear to be thermodynamically unstable and, unless stored in dry conditions or doped by stabilizers, they tend to transform spontaneously to crystalline CaPO4, mainly to ones with an apatitic structure. This intrinsic metastability of the ACPs is of a great biological relevance. In particular, the initiating role that metastable ACPs play in matrix vesicle biomineralization raises their importance from a mere laboratory curiosity to that of a reasonable key intermediate in skeletal calcifications. In addition, synthetic ACPs appear to be very promising biomaterials both for manufacturing artificial bone grafts and for dental applications. In this review, the current knowledge on the occurrence, structural design, chemical composition, preparation, properties, and biomedical applications of the synthetic ACPs have been summarized.
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Su Y, Cockerill I, Zheng Y, Tang L, Qin YX, Zhu D. Biofunctionalization of metallic implants by calcium phosphate coatings. Bioact Mater 2019; 4:196-206. [PMID: 31193406 PMCID: PMC6529680 DOI: 10.1016/j.bioactmat.2019.05.001] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/26/2019] [Accepted: 05/14/2019] [Indexed: 01/07/2023] Open
Abstract
Metallic materials have been extensively applied in clinical practice due to their unique mechanical properties and durability. Recent years have witnessed broad interests and advances on surface functionalization of metallic implants for high-performance biofunctions. Calcium phosphates (CaPs) are the major inorganic component of bone tissues, and thus owning inherent biocompatibility and osseointegration properties. As such, they have been widely used in clinical orthopedics and dentistry. The new emergence of surface functionalization on metallic implants with CaP coatings shows promise for a combination of mechanical properties from metals and various biofunctions from CaPs. This review provides a brief summary of state-of-art of surface biofunctionalization on implantable metals by CaP coatings. We first glance over different types of CaPs with their coating methods and in vitro and in vivo performances, and then give insight into the representative biofunctions, i.e. osteointegration, corrosion resistance and biodegradation control, and antibacterial property, provided by CaP coatings for metallic implant materials.
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Affiliation(s)
- Yingchao Su
- Department of Biomedical Engineering, University of North Texas, Denton, TX, USA
| | - Irsalan Cockerill
- Department of Biomedical Engineering, University of North Texas, Denton, TX, USA
| | - Yufeng Zheng
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, China
| | - Liping Tang
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, USA
| | - Yi-Xian Qin
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Donghui Zhu
- Department of Biomedical Engineering, University of North Texas, Denton, TX, USA
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Uskoković V, Janković-Častvan I, Wu VM. Bone Mineral Crystallinity Governs the Orchestration of Ossification and Resorption during Bone Remodeling. ACS Biomater Sci Eng 2019; 5:3483-3498. [DOI: 10.1021/acsbiomaterials.9b00255] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Vuk Uskoković
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, Engineering Gateway 4200, Irvine, California 92697, United States
- Department of Bioengineering, University of Illinois, 851 South Morgan Street, Chicago, Illinois 60607-7052, United States
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, 1600 Fourth Street, San Francisco, California 94158, United States
| | - Ivona Janković-Častvan
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade 11000, Serbia
| | - Victoria M. Wu
- Department of Bioengineering, University of Illinois, 851 South Morgan Street, Chicago, Illinois 60607-7052, United States
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Diez-Escudero A, Torreggiani E, Di Pompo G, Espanol M, Persson C, Ciapetti G, Baldini N, Ginebra MP. Effect of calcium phosphate heparinization on the in vitro inflammatory response and osteoclastogenesis of human blood precursor cells. J Tissue Eng Regen Med 2019; 13:1217-1229. [PMID: 31050382 DOI: 10.1002/term.2872] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 03/12/2019] [Accepted: 04/29/2019] [Indexed: 12/27/2022]
Abstract
The immobilization of natural molecules on synthetic bone grafts stands as a strategy to enhance their biological interactions. During the early stages of healing, immune cells and osteoclasts (OC) modulate the inflammatory response and resorb the biomaterial, respectively. In this study, heparin, a naturally occurring molecule in the bone extracellular matrix, was covalently immobilized on biomimetic calcium-deficient hydroxyapatite (CDHA). The effect of heparin-functionalized CDHA on inflammation and osteoclastogenesis was investigated using primary human cells and compared with pristine CDHA and beta-tricalcium phosphate (β-TCP). Biomimetic substrates led to lower oxidative stresses by neutrophils and monocytes than sintered β-TCP, even though no further reduction was induced by the presence of heparin. In contrast, heparinized CDHA fostered osteoclastogenesis. Optical images of stained TRAP positive cells showed an earlier and higher presence of multinucleated cells, compatible with OC at 14 days, while pristine CDHA and β-TCP present OC at 21-28 days. Although no statistically significant differences were found in the OC activity, microscopy images evidenced early stages of degradation on heparinized CDHA, compatible with osteoclastic resorption. Overall, the results suggest that the functionalization with heparin fostered the formation and activity of OC, thus offering a promising strategy to integrate biomaterials in the bone remodelling cycle by increasing their OC-mediated resorption.
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Affiliation(s)
- Anna Diez-Escudero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, Spain
| | - Elena Torreggiani
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Gemma Di Pompo
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Montserrat Espanol
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, Spain
| | - Cecilia Persson
- Applied Material Science, Department of Engineering Sciences, The Ångstrom Laboratory, Uppsala University, Uppsala, Sweden
| | - Gabriela Ciapetti
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Nicola Baldini
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.,Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, Spain.,Institute for Bioengineering of Catalonia, Barcelona Institute of Science and Technology, Barcelona, Spain
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Zakaria MN, Cahyanto A, El-Ghannam A. Calcium release and physical properties of modified carbonate apatite cement as pulp capping agent in dental application. Biomater Res 2018; 22:35. [PMID: 30546914 PMCID: PMC6282351 DOI: 10.1186/s40824-018-0146-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 09/27/2018] [Indexed: 12/30/2022] Open
Abstract
Background Carbonate apatite (CO3Ap) and silica-calcium phosphate composite (SCPC) are bone substitutes with good prospect for dental application. SCPC creates a hydroxyapatite surface layer and stimulate bone cell function while, CO3Ap induce apatite crystal formation with good adaptation providing good seal between cement and the bone. Together, these materials will add favorable properties as a pulp capping material to stimulate mineral barrier and maintain pulp vitality. The aim of this study is to investigate modification of CO3Ap cement combined with SCPC, later term as CO3Ap-SCPC cement (CAS) in means of its chemical (Calcium release) and physical properties (setting time, DTS and pH value). Methods The study consist of three groups; group 1 (100% calcium hydroxide, group 2 CO3Ap (60% DCPA: 40% vaterite, and group 3 CAS (60% DCPA: 20% vaterite: 20% SCPC. Distilled water was employed as a solution for group 1, and 0.2 mol/L Na3PO4 used for group 2 and group 3. Samples were evaluated with respect to important properties for pulp capping application such as pH, setting time, mechanical strength and calcium release evaluation. Results The fastest setting time was in CO3Ap cement group without SCPC, while the addition of 20% SCPC slightly increase the pH value but did not improved the cement mechanical strength, however, the mechanical strength of both CO3Ap groups were significantly higher than calcium hydroxide. All three groups released calcium ions and had alkaline pH. Highest pH level, as well as calcium released level, was in the control group. Conclusion The CAS cement had good mechanical and acceptable chemical properties for pulp capping application compared to calcium hydroxide as a gold standard. However, improvements and in vivo studies are to be carried out with the further development of this material.
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Affiliation(s)
- Myrna Nurlatifah Zakaria
- 1Department of Endodontology and Operative Dentistry, Program Study of Dentistry, Faculty of Medicine, Universitas Jenderal Achmad Yani, Cimahi, Indonesia
| | - Arief Cahyanto
- 2Department of Dental Materials Science and Technology, Faculty of Dentistry, Universitas Padjadjaran, Sumedang-Jatinangor, Indonesia
| | - Ahmed El-Ghannam
- 3Department of Mechanical Engineering and Engineering Science, The University of North Carolina at Charlotte, Charlotte, NC USA
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Kelder C, Bakker AD, Klein-Nulend J, Wismeijer D. The 3D Printing of Calcium Phosphate with K-Carrageenan under Conditions Permitting the Incorporation of Biological Components-A Method. J Funct Biomater 2018; 9:E57. [PMID: 30336547 PMCID: PMC6306897 DOI: 10.3390/jfb9040057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/06/2018] [Accepted: 10/11/2018] [Indexed: 12/15/2022] Open
Abstract
Critical-size bone defects are a common clinical problem. The golden standard to treat these defects is autologous bone grafting. Besides the limitations of availability and co-morbidity, autografts have to be manually adapted to fit in the defect, which might result in a sub-optimal fit and impaired healing. Scaffolds with precise dimensions can be created using 3-dimensional (3D) printing, enabling the production of patient-specific, 'tailor-made' bone substitutes with an exact fit. Calcium phosphate (CaP) is a popular material for bone tissue engineering due to its biocompatibility, osteoconductivity, and biodegradable properties. To enhance bone formation, a bioactive 3D-printed CaP scaffold can be created by combining the printed CaP scaffold with biological components such as growth factors and cytokines, e.g., vascular endothelial growth factor (VEGF), bone morphogenetic protein-2 (BMP-2), and interleukin-6 (IL-6). However, the 3D-printing of CaP with a biological component is challenging since production techniques often use high temperatures or aggressive chemicals, which hinders/inactivates the bioactivity of the incorporated biological components. Therefore, in our laboratory, we routinely perform extrusion-based 3D-printing with a biological binder at room temperature to create porous scaffolds for bone healing. In this method paper, we describe in detail a 3D-printing procedure for CaP paste with K-carrageenan as a biological binder.
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Affiliation(s)
- Cindy Kelder
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands.
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands.
| | - Astrid Diana Bakker
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands.
| | - Jenneke Klein-Nulend
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands.
| | - Daniël Wismeijer
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands.
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12
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Rasouli R, Barhoum A, Uludag H. A review of nanostructured surfaces and materials for dental implants: surface coating, patterning and functionalization for improved performance. Biomater Sci 2018; 6:1312-1338. [PMID: 29744496 DOI: 10.1039/c8bm00021b] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The emerging field of nanostructured implants has enormous scope in the areas of medical science and dental implants. Surface nanofeatures provide significant potential solutions to medical problems by the introduction of better biomaterials, improved implant design, and surface engineering techniques such as coating, patterning, functionalization and molecular grafting at the nanoscale. This review is of an interdisciplinary nature, addressing the history and development of dental implants and the emerging area of nanotechnology in dental implants. After a brief introduction to nanotechnology in dental implants and the main classes of dental implants, an overview of different types of nanomaterials (i.e. metals, metal oxides, ceramics, polymers and hydrides) used in dental implant together with their unique properties, the influence of elemental compositions, and surface morphologies and possible applications are presented from a chemical point of view. In the core of this review, the dental implant materials, physical and chemical fabrication techniques and the role of nanotechnology in achieving ideal dental implants have been discussed. Finally, the critical parameters in dental implant design and available data on the current dental implant surfaces that use nanotopography in clinical dentistry have been discussed.
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Affiliation(s)
- Rahimeh Rasouli
- Department of Medical Nanotechnology, International Campus, Tehran University of Medical Sciences, Tehran, Iran.
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Yamada M, Egusa H. Current bone substitutes for implant dentistry. J Prosthodont Res 2017; 62:152-161. [PMID: 28927994 DOI: 10.1016/j.jpor.2017.08.010] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 08/07/2017] [Accepted: 08/29/2017] [Indexed: 01/08/2023]
Abstract
PURPOSE Alveolar ridge augmentation is essential for success in implant therapy and depends on the biological performance of bone graft materials. This literature review aims to comprehensively explain the clinically relevant capabilities and limitations of currently available bone substitutes for bone augmentation in light of biomaterial science. STUDY SELECTION The biological performance of calcium phosphate-based bone substitutes was categorized according to space-making capability, biocompatibility, bioabsorption, and volume maintenance over time. Each category was reviewed based on clinical studies, preclinical animal studies, and in vitro studies. RESULTS Currently available bone substitutes provide only osteoconduction as a scaffold but not osteoinduction. Particle size, sensitivity to enzymatic or chemical dissolution, and mechanical properties affect the space-making capability of bone substitutes. The nature of collagen fibers, particulate size, and release of calcium ions influence the biocompatibility of bone substitutes. Bioabsorption of bone substitutes is determined by water solubility (chemical composition) and acid resistance (integrity of apatite structure). Bioabsorption of remnant bone substitute material and volume maintenance of the augmented bone are inversely related. CONCLUSION It is necessary to improve the biocompatibility of currently available bone substitutes and to strike an appropriate balance between bioabsorption and volume maintenance to achieve ideal bone remodeling.
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Affiliation(s)
- Masahiro Yamada
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Japan
| | - Hiroshi Egusa
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Japan.
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Diez-Escudero A, Espanol M, Montufar EB, Di Pompo G, Ciapetti G, Baldini N, Ginebra MP. Focus Ion Beam/Scanning Electron Microscopy Characterization of Osteoclastic Resorption of Calcium Phosphate Substrates. Tissue Eng Part C Methods 2017; 23:118-124. [DOI: 10.1089/ten.tec.2016.0361] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Anna Diez-Escudero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain
- Center for Research in NanoEngineering (CRnE), UPC, Barcelona, Spain
| | - Montserrat Espanol
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain
- Center for Research in NanoEngineering (CRnE), UPC, Barcelona, Spain
| | - Edgar B. Montufar
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain
- Center for Research in NanoEngineering (CRnE), UPC, Barcelona, Spain
| | - Gemma Di Pompo
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IstitutoOrtopedico Rizzoli, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Gabriela Ciapetti
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IstitutoOrtopedico Rizzoli, Bologna, Italy
| | - Nicola Baldini
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IstitutoOrtopedico Rizzoli, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain
- Center for Research in NanoEngineering (CRnE), UPC, Barcelona, Spain
- Institute for Bioengineering of Catalonia, Barcelona, Spain
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Chiba S, Anada T, Suzuki K, Saito K, Shiwaku Y, Miyatake N, Baba K, Imaizumi H, Hosaka M, Itoi E, Suzuki O. Effect of resorption rate and osteoconductivity of biodegradable calcium phosphate materials on the acquisition of natural bone strength in the repaired bone. J Biomed Mater Res A 2016; 104:2833-42. [DOI: 10.1002/jbm.a.35828] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/24/2016] [Accepted: 07/06/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Shinpei Chiba
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
| | - Takahisa Anada
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
| | - Kentaro Suzuki
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
| | - Keisuke Saito
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
| | - Yukari Shiwaku
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
| | | | - Kazuyoshi Baba
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
| | - Hideki Imaizumi
- Department of Orthopedic Surgery; Osaki Citizen Hospital; Osaki 989-6183 Japan
| | - Masami Hosaka
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
| | - Eiji Itoi
- Department of Orthopaedic Surgery; Tohoku University School of Medicine; Sendai 980-8574 Japan
| | - Osamu Suzuki
- Division of Craniofacial Function Engineering; Tohoku University Graduate School of Dentistry; Sendai 980-8575 Japan
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Xiao W, Sonny Bal B, Rahaman MN. Preparation of resorbable carbonate-substituted hollow hydroxyapatite microspheres and their evaluation in osseous defects in vivo. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 60:324-332. [PMID: 26706537 PMCID: PMC4691531 DOI: 10.1016/j.msec.2015.11.039] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 10/27/2015] [Accepted: 11/13/2015] [Indexed: 11/16/2022]
Abstract
Hollow hydroxyapatite (HA) microspheres, with a high-surface-area mesoporous shell, can provide a unique bioactive and osteoconductive carrier for proteins to stimulate bone regeneration. However, synthetic HA has a slow resorption rate and a limited ability to remodel into bone. In the present study, hollow HA microspheres with controllable amounts of carbonate substitution (0-12 wt.%) were created using a novel glass conversion route and evaluated in vitro and in vivo. Hollow HA microspheres with ~12 wt.% of carbonate (designated CHA12) showed a higher surface area (236 m(2) g(-1)) than conventional hollow HA microspheres (179 m(2)g(-1)) and a faster degradation rate in a potassium acetate buffer solution. When implanted for 12 weeks in rat calvarial defects, the CHA12 and HA microspheres showed a limited capacity to regenerate bone but the CHA12 microspheres resorbed faster than the HA microspheres. Loading the microspheres with bone morphogenetic protein-2 (BMP2) (1 μg per defect) stimulated bone regeneration and accelerated resorption of the CHA12 microspheres. At 12 weeks, the amount of new bone in the defects implanted with the CHA12 microspheres (73±8%) was significantly higher than the HA microspheres (59±2%) while the amount of residual CHA12 microspheres (7±2% of the total defect area) was significantly lower than the HA microspheres (21±3%). The combination of these carbonate-substituted HA microspheres with clinically safe doses of BMP2 could provide promising implants for healing non-loaded bone defects.
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Affiliation(s)
- Wei Xiao
- Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, MO 65409, United States
| | - B Sonny Bal
- Department of Orthopaedic Surgery, University of Missouri, Columbia, MO 65212, United States
| | - Mohamed N Rahaman
- Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, MO 65409, United States.
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Kim BS, Choi MK, Yoon JH, Lee J. Evaluation of bone regeneration with biphasic calcium phosphate substitute implanted with bone morphogenetic protein 2 and mesenchymal stem cells in a rabbit calvarial defect model. Oral Surg Oral Med Oral Pathol Oral Radiol 2015; 120:2-9. [DOI: 10.1016/j.oooo.2015.02.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 02/12/2015] [Indexed: 12/28/2022]
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Cahyanto A, Maruta M, Tsuru K, Matsuya S, Ishikawa K. Fabrication of bone cement that fully transforms to carbonate apatite. Dent Mater J 2015; 34:394-401. [PMID: 25948145 DOI: 10.4012/dmj.2014-328] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The objective of this study was to fabricate a type of bone cement that could fully transform to carbonate apatite (CO3Ap) in physiological conditions. A combination of calcium carbonate (CaCO3) and dicalcium phosphate anhydrous was chosen as the powder phase and mixed with one of three kinds of sodium phosphate solutions: NaH2PO4, Na2HPO4, or Na3PO4. The cement that fully transformed to CO3Ap was fabricated using vaterite, instead of calcite, as a CaCO3 source. Their stability in aqueous solutions was different, regardless of the type of sodium phosphate solution. Rate of transformation to CO3Ap in descending order was Na3PO4>Na2HPO4>NaH2PO4. Transformation rate could be affected by the pH of solution. Results of this study showed that it was advantageous to use vaterite to fabricate CO3Ap-forming cement.
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Affiliation(s)
- Arief Cahyanto
- Department of Biomaterials, Faculty of Dental Science, Kyushu University
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Lin X, de Groot K, Wang D, Hu Q, Wismeijer D, Liu Y. A review paper on biomimetic calcium phosphate coatings. Open Biomed Eng J 2015; 9:56-64. [PMID: 25893016 PMCID: PMC4391212 DOI: 10.2174/1874120701509010056] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 05/31/2014] [Accepted: 08/30/2014] [Indexed: 12/14/2022] Open
Abstract
Biomimetic calcium phosphate coatings have been developed for bone regeneration and repair because of their biocompatibility, osteoconductivity, and easy preparation. They can be rendered osteoinductive by incorporating an osteogenic agent, such as bone morphogenetic protein 2 (BMP-2), into the crystalline lattice work in physiological situations. The biomimetic calcium phosphate coating enables a controlled, slow and local release of BMP-2 when it undergoes cell mediated coating degradation induced by multinuclear cells, such as osteoclasts and foreign body giant cells, which mimics a physiologically similar release mode, to achieve sustained ectopic or orthotopic bone formation. Therefore, biomimetic calcium phosphate coatings are considered to be a promising delivery vehicle for osteogenic agents. In this review, we present an overview of biomimetic calcium phosphate coatings including their preparation techniques, physico-chemical properties, potential as drug carrier, and their pre-clinical application both in ectopic and orthotopic animal models. We briefly review some features of hydroxyapatite coatings and their clinical applications to gain insight into the clinical applications of biomimetic calcium phosphate coatings in the near future.
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Affiliation(s)
- X Lin
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands ; Department of Orthodontics, Affiliated Stomatological Hospital of Medical School, Nanjing University, Nanjing, China
| | - K de Groot
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands
| | - D Wang
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands
| | - Q Hu
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Medical School, Nanjing University, Nanjing, China
| | - D Wismeijer
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands
| | - Y Liu
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands
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Walschot LHB, Aquarius R, Verdonschot N, Buma P, Schreurs BW. Porous titanium particles for acetabular reconstruction in total hip replacement show extensive bony armoring after 15 weeks. A loaded in vivo study in 10 goats. Acta Orthop 2014; 85:600-8. [PMID: 25238431 PMCID: PMC4259031 DOI: 10.3109/17453674.2014.960660] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND AND PURPOSE The bone impaction grafting technique restores bone defects in total hip replacement. Porous titanium particles (TiPs) are deformable, like bone particles, and offer better primary stability. We addressed the following questions in this animal study: are impacted TiPs osteoconductive under loaded conditions; do released micro-particles accelerate wear; and are systemic titanium blood levels elevated after implantation of TiPs? ANIMALS AND METHODS An AAOS type-III defect was created in the right acetabulum of 10 goats weighing 63 (SD 6) kg, and reconstructed with calcium phosphate-coated TiPs and a cemented polyethylene cup. A stem with a cobalt chrome head was cemented in the femur. The goats were killed after 15 weeks. Blood samples were taken pre- and postoperatively. RESULTS The TiP-graft layer measured 5.6 (SD 0.8) mm with a mean bone ingrowth distance of 2.8 (SD 0.8) mm. Cement penetrated 0.9 (0.3-1.9) mm into the TiPs. 1 reconstruction showed minimal cement penetration (0.3 mm) and failed at the cement-TiP interface. There were no signs of accelerated wear, metallic particle debris, or osteolysis. Median systemic titanium concentrations increased on a log-linear scale from 0.5 (0.3-1.1) parts per billion (ppb) to 0.9 (0.5-2.8) ppb (p=0.01). INTERPRETATION Adequate cement pressurization is advocated for impaction grafting with TiPs. After implantation, calcium phosphate-coated TiPs were osteoconductive under loaded conditions and caused an increase in systemic titanium concentrations. However, absolute levels remained low. There were no signs of accelerated wear. A clinical pilot study should be performed to prove that application in humans is safe in the long term.
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Affiliation(s)
| | - René Aquarius
- Department of Orthopaedics, Orthopaedic Research Laboratory, Radboud University Medical Centre, Nijmegen
| | - Nico Verdonschot
- Department of Orthopaedics, Orthopaedic Research Laboratory, Radboud University Medical Centre, Nijmegen,Laboratory of Biomechanical Engineering, University of Twente, Enschede, the Netherlands
| | - Pieter Buma
- Department of Orthopaedics, Orthopaedic Research Laboratory, Radboud University Medical Centre, Nijmegen
| | - B Willem Schreurs
- Department of Orthopaedics, Radboud University Medical Centre, Nijmegen
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Bae SY, Park JC, Shin HS, Lee YK, Choi SH, Jung UW. Tomographic and histometric analysis of autogenous bone block and synthetic hydroxyapatite block grafts without rigid fixation on rabbit calvaria. J Periodontal Implant Sci 2014; 44:251-8. [PMID: 25368814 PMCID: PMC4216402 DOI: 10.5051/jpis.2014.44.5.251] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 10/03/2014] [Indexed: 11/17/2022] Open
Affiliation(s)
- Soo-Yong Bae
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jung-Chul Park
- Department of Periodontology, Dankook University College of Dentistry, Cheonan, Korea
| | - Hyun-Seung Shin
- Department of Periodontology, Dankook University College of Dentistry, Cheonan, Korea
| | - Yong-Keun Lee
- Research Center for Oral Disease Regulation of the Aged, Chosun University School of Dentistry, Gwangju, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Ui-Won Jung
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
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Rozé J, Hoornaert A, Layrolle P. Correlation between primary stability and bone healing of surface treated titanium implants in the femoral epiphyses of rabbits. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1941-1951. [PMID: 24818874 DOI: 10.1007/s10856-014-5231-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 04/28/2014] [Indexed: 06/03/2023]
Abstract
The aim of this study was to analyse the stability and osseointegration of surface treated titanium implants in rabbit femurs. The implants were either grit-blasted and acid-etched (BE Group), calcium phosphate (CaP) coated by using the electrodeposition technique, or had bioactive molecules incorporated into the CaP coatings: either cyclic adenosine monophosphate (cAMP) or dexamethasone (Dex). Twenty four cylindrical titanium implants (n = 6/group) were inserted bilaterally into the femoral epiphyses of New Zealand White, female, adult rabbits for 4 weeks. Implant stability was measured by resonance frequency analysis (RFA) the day of implantation and 4 weeks later, and correlated to histomorphometric parameters, bone implant contact (BIC) and bone growth around the implants (BS/TS 0.5 mm). The BIC values for the four groups were not significantly different. That said, histology indicated that the CaP coatings improved bone growth around the implants. The incorporation of bioactive molecules (cAMP and Dex) into the CaP coatings did not improve bone growth compared to the BE group. Implant stability quotients (ISQ) increased in each group after 4 weeks of healing but were not significantly different between the groups. A good correlation was observed between ISQ and BS/TS 0.5 mm indicating that RFA is a non-invasive method that can be used to assess the osseointegration of implants. In conclusion, the CaP coating enhanced bone formation around the implants, which was correlated to stability measured by resonance frequency analysis. Furthers studies need to be conducted in order to explore the benefits of incorporating bioactive molecules into the coatings for peri-implant bone healing.
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Affiliation(s)
- Julie Rozé
- CHU Nantes, Faculty of Dental Surgery, University of Nantes, 1 Place Alexis Ricordeau, Nantes, 44042, France
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Tas AC. The use of physiological solutions or media in calcium phosphate synthesis and processing. Acta Biomater 2014; 10:1771-92. [PMID: 24389317 DOI: 10.1016/j.actbio.2013.12.047] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 12/02/2013] [Accepted: 12/17/2013] [Indexed: 11/29/2022]
Abstract
This review examined the literature to spot uses, if any, of physiological solutions/media for the in situ synthesis of calcium phosphates (CaP) under processing conditions (i.e. temperature, pH, concentration of inorganic ions present in media) mimicking those prevalent in the human hard tissue environments. There happens to be a variety of aqueous solutions or media developed for different purposes; sometimes they have been named as physiological saline, isotonic solution, cell culture solution, metastable CaP solution, supersaturated calcification solution, simulated body fluid or even dialysate solution (for dialysis patients). Most of the time such solutions were not used as the aqueous medium to perform the biomimetic synthesis of calcium phosphates, and their use was usually limited to the in vitro testing of synthetic biomaterials. This review illustrates that only a limited number of research studies used physiological solutions or media such as Earle's balanced salt solution, Bachra et al. solutions or Tris-buffered simulated body fluid solution containing 27mM HCO3(-) for synthesizing CaP, and these studies have consistently reported the formation of X-ray-amorphous CaP nanopowders instead of Ap-CaP or stoichiometric hydroxyapatite (HA, Ca10(PO4)6(OH)2) at 37°C and pH 7.4. By relying on the published articles, this review highlights the significance of the use of aqueous solutions containing 0.8-1.5 mMMg(2+), 22-27mM HCO3(-), 142-145mM Na(+), 5-5.8mM K(+), 103-133mM Cl(-), 1.8-3.75mM Ca(2+), and 0.8-1.67mM HPO4(2-), which essentially mimic the composition and the overall ionic strength of the human extracellular fluid (ECF), in forming the nanospheres of X-ray-amorphous CaP.
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Affiliation(s)
- A Cuneyt Tas
- Department of Materials Science and Engineering, University of Illinois, Urbana, IL 61801, USA.
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Detsch R, Boccaccini AR. The role of osteoclasts in bone tissue engineering. J Tissue Eng Regen Med 2014; 9:1133-49. [PMID: 24478169 DOI: 10.1002/term.1851] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 09/18/2013] [Accepted: 10/20/2013] [Indexed: 12/13/2022]
Abstract
The success of scaffold-based bone regeneration approaches strongly depends on the performance of the biomaterial utilized. Within the efforts of regenerative medicine towards a restitutio ad integrum (i.e. complete reconstruction of a diseased tissue), scaffolds should be completely degraded within an adequate period of time. The degradation of synthetic bone substitute materials involves both chemical dissolution (physicochemical degradation) and resorption (cellular degradation by osteoclasts). Responsible for bone resorption are osteoclasts, cells of haematopoietic origin. Osteoclasts play also a crucial role in bone remodelling, which is essential for the regeneration of bone defects. There is, however, surprisingly limited knowledge about the detailed effects of osteoclasts on biomaterials degradation behaviour. This review covers the relevant fundamental knowledge and progress made in the field of osteoclast activity related to biomaterials used for bone regeneration. In vitro studies with osteoclastic precursor cells on synthetic bone substitute materials show that there are specific parameters that inhibit or enhance resorption. Moreover, analyses of the bone-material interface reveal that biomaterials composition has a significant influence on their degradation in contact with osteoclasts. Crystallinity, grain size, surface bioactivity and density of the surface seem to have a less significant effect on osteoclastic activity. In addition, the topography of the scaffold surface can be tailored to affect the development and spreading of osteoclast cells. The present review also highlights possible areas on which future research is needed and which are relevant to enhance our understanding of the complex role of osteoclasts in bone tissue engineering.
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Affiliation(s)
- Rainer Detsch
- Institute of Biomaterials, University of Erlangen-Nuremberg, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, Germany
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KANEKO H, SASAKI H, HONMA S, HAYAKAWA T, SATO M, YAJIMA Y, YOSHINARI M. Influence of thin carbonate-containing apatite coating with molecular precursor method to zirconia on osteoblast-like cell response. Dent Mater J 2014; 33:39-47. [DOI: 10.4012/dmj.2013-122] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Liu T, Wu G, Zheng Y, Wismeijer D, Everts V, Liu Y. Cell-mediated BMP-2 release from a novel dual-drug delivery system promotes bone formation. Clin Oral Implants Res 2013; 25:1412-21. [DOI: 10.1111/clr.12283] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tie Liu
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
| | - Yuanna Zheng
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
- School of Stomatology/Dental Clinic; Zhejiang Chinese Medical University; Hangzhou China
| | - Daniel Wismeijer
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
| | - Vincent Everts
- Department of Oral Cell Biology; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
| | - Yuelian Liu
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
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Lin X, Tan L, Wang Q, Zhang G, Zhang B, Yang K. In vivo degradation and tissue compatibility of ZK60 magnesium alloy with micro-arc oxidation coating in a transcortical model. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3881-8. [DOI: 10.1016/j.msec.2013.05.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 04/03/2013] [Accepted: 05/10/2013] [Indexed: 01/08/2023]
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28
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Xiao W, Fu H, Rahaman MN, Liu Y, Bal BS. Hollow hydroxyapatite microspheres: a novel bioactive and osteoconductive carrier for controlled release of bone morphogenetic protein-2 in bone regeneration. Acta Biomater 2013; 9:8374-83. [PMID: 23747325 PMCID: PMC3732511 DOI: 10.1016/j.actbio.2013.05.029] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 05/22/2013] [Accepted: 05/27/2013] [Indexed: 12/20/2022]
Abstract
The regeneration of large bone defects is a common and significant clinical problem. Limitations associated with existing treatments such as autologous bone grafts and allografts have increased the need for synthetic bone graft substitutes. The objective of this study was to evaluate the capacity of novel hollow hydroxyapatite (HA) microspheres to serve as a carrier for controlled release of bone morphogenetic-2 (BMP2) in bone regeneration. Hollow HA microspheres (106-150 μm) with a high surface area (>100 m2 g(-1)) and a mesoporous shell wall (pore size 10-20 nm) were created using a glass conversion technique. The release of BMP2 from the microspheres into a medium composed of diluted fetal bovine serum in vitro was slow, but it occurred continuously for over 2 weeks. When implanted in rat calvarial defects for 3 or 6 weeks, the microspheres loaded with BMP2 (1 μg per defect) showed a significantly better capacity to regenerate bone than those without BMP2. The amount of new bone in the defects implanted with the BMP2-loaded microspheres was 40% and 43%, respectively, at 3 and 6 weeks, compared to 13% and 17%, respectively, for the microspheres without BMP2. Coating the BMP2-loaded microspheres with a biodegradable polymer, poly(lactic-co-glycolic acid), reduced the amount of BMP2 released in vitro and, above a certain coating thickness, significantly reduced bone regeneration in vivo. The results indicate that these hollow HA microspheres could provide a bioactive and osteoconductive carrier for growth factors in bone regeneration.
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Affiliation(s)
- Wei Xiao
- Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
| | - Hailuo Fu
- Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
| | - Mohamed N. Rahaman
- Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
| | - Yonxing Liu
- Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
| | - B. Sonny Bal
- Department of Orthopaedic Surgery, University of Missouri – Columbia, Columbia, Missouri 65212, USA
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Marei MK, Nagy NB, Saad MS, Zaky SH, Elbackly RM, Eweida AM, Alkhodary MA. Strategy for a Biomimetic Paradigm in Dental and Craniofacial Tissue Engineering. Biomimetics (Basel) 2013. [DOI: 10.1002/9781118810408.ch6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Costa DO, Prowse PDH, Chrones T, Sims SM, Hamilton DW, Rizkalla AS, Dixon SJ. The differential regulation of osteoblast and osteoclast activity by surface topography of hydroxyapatite coatings. Biomaterials 2013; 34:7215-26. [PMID: 23830579 DOI: 10.1016/j.biomaterials.2013.06.014] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2013] [Accepted: 06/10/2013] [Indexed: 11/19/2022]
Abstract
The behavior of bone cells is influenced by the surface chemistry and topography of implants and scaffolds. Our purpose was to investigate how the topography of biomimetic hydroxyapatite (HA) coatings influences the attachment and differentiation of osteoblasts, and the resorptive activity of osteoclasts. Using strategies reported previously, we directly controlled the surface topography of HA coatings on polycaprolactone discs. Osteoblasts and osteoclasts were incubated on HA coatings having distinct isotropic topographies with submicrometer and micro-scale features. Osteoblast attachment and differentiation were greater on more complex, micro-rough HA surfaces (Ra ~2 μm) than on smoother topographies (Ra ~1 μm). In contrast, activity of the osteoclast marker tartrate-resistant acid phosphatase was greater on smoother than on micro-rough surfaces. Furthermore, scanning electron microscopy revealed the presence of resorption lacunae exclusively on smoother HA coatings. Inhibition of resorption on micro-rough surfaces was associated with disruption of filamentous actin sealing zones. In conclusion, HA coatings can be prepared with distinct topographies, which differentially regulate responses of osteoblasts, as well as osteoclastic activity and hence susceptibility to resorption. Thus, it may be possible to design HA coatings that induce optimal rates of bone formation and degradation specifically tailored for different applications in orthopedics and dentistry.
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Affiliation(s)
- Daniel O Costa
- Department of Chemical and Biochemical Engineering, Faculty of Engineering, The University of Western Ontario, London, Ontario, Canada
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Moroni L, Nandakumar A, de Groot FB, van Blitterswijk CA, Habibovic P. Plug and play: combining materials and technologies to improve bone regenerative strategies. J Tissue Eng Regen Med 2013; 9:745-59. [PMID: 23671062 DOI: 10.1002/term.1762] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 02/12/2013] [Accepted: 04/04/2013] [Indexed: 11/11/2022]
Abstract
Despite recent advances in the development of biomaterials intended to replace natural bone grafts for the regeneration of large, clinically relevant defects, most synthetic solutions that are currently applied in the clinic are still inferior to natural bone grafts with regard to regenerative potential and are limited to non-weight-bearing applications. From a materials science perspective, we always face the conundrum of the preservation of bioactivity of calcium phosphate ceramics in spite of better mechanical and handling properties and processability of polymers. Composites have long been investigated as a method to marry these critical properties for the successful regeneration of bone and, indeed, have shown a significant improvement when used in combination with cells or growth factors. However, when looking at this approach from a clinical and regulatory perspective, the use of cells or biologicals prolongs the path of new treatments from the bench to the bedside. Applying 'smart' synthetic materials alone poses the fascinating challenge of instructing tissue regeneration in situ, thereby tremendously facilitating clinical translation. In the journey to make this possible, and with the aim of adding up the advantages of different biomaterials, combinations of fabrication technologies arise as a new strategy for generating instructive three-dimensional (3D) constructs for bone regeneration. Here we provide a review of recent technologies and approaches to create such constructs and give our perspective on how combinations of technologies and materials can help in obtaining more functional bone regeneration.
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Affiliation(s)
- Lorenzo Moroni
- Department of Tissue Regeneration, Institute for Biomedical Technology and Technical Medicine (MIRA), University of Twente, Enschede, The Netherlands
| | - Anandkumar Nandakumar
- Department of Tissue Regeneration, Institute for Biomedical Technology and Technical Medicine (MIRA), University of Twente, Enschede, The Netherlands
| | | | - Clemens A van Blitterswijk
- Department of Tissue Regeneration, Institute for Biomedical Technology and Technical Medicine (MIRA), University of Twente, Enschede, The Netherlands
| | - Pamela Habibovic
- Department of Tissue Regeneration, Institute for Biomedical Technology and Technical Medicine (MIRA), University of Twente, Enschede, The Netherlands
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Nandakumar A, Barradas A, de Boer J, Moroni L, van Blitterswijk C, Habibovic P. Combining technologies to create bioactive hybrid scaffolds for bone tissue engineering. BIOMATTER 2013; 3:23705. [PMID: 23507924 PMCID: PMC3749798 DOI: 10.4161/biom.23705] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Combining technologies to engineer scaffolds that can offer physical and chemical cues to cells is an attractive approach in tissue engineering and regenerative medicine. In this study, we have fabricated polymer-ceramic hybrid scaffolds for bone regeneration by combining rapid prototyping (RP), electrospinning (ESP) and a biomimetic coating method in order to provide mechanical support and a physico-chemical environment mimicking both the organic and inorganic phases of bone extracellular matrix (ECM). Poly(ethylene oxide terephthalate)-poly(buthylene terephthalate) (PEOT/PBT) block copolymer was used to produce three dimensional scaffolds by combining 3D fiber (3DF) deposition, and ESP, and these constructs were then coated with a Ca-P layer in a simulated physiological solution. Scaffold morphology and composition were studied using scanning electron microscopy (SEM) coupled to energy dispersive X-ray analyzer (EDX) and Fourier Tranform Infrared Spectroscopy (FTIR). Bone marrow derived human mesenchymal stromal cells (hMSCs) were cultured on coated and uncoated 3DF and 3DF + ESP scaffolds for up to 21 d in basic and mineralization medium and cell attachment, proliferation, and expression of genes related to osteogenesis were assessed. Cells attached, proliferated and secreted ECM on all the scaffolds. There were no significant differences in metabolic activity among the different groups on days 7 and 21. Coated 3DF scaffolds showed a significantly higher DNA amount in basic medium at 21 d compared with the coated 3DF + ESP scaffolds, whereas in mineralization medium, the presence of coating in 3DF+ESP scaffolds led to a significant decrease in the amount of DNA. An effect of combining different scaffolding technologies and material types on expression of a number of osteogenic markers (cbfa1, BMP-2, OP, OC and ON) was observed, suggesting the potential use of this approach in bone tissue engineering.
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Affiliation(s)
- Anandkumar Nandakumar
- Department of Tissue Regeneration; MIRA Institute for Biomedical Technology and Technical Medicine; University of Twente; Enschede, The Netherlands
| | - Ana Barradas
- Department of Tissue Regeneration; MIRA Institute for Biomedical Technology and Technical Medicine; University of Twente; Enschede, The Netherlands
| | - Jan de Boer
- Department of Tissue Regeneration; MIRA Institute for Biomedical Technology and Technical Medicine; University of Twente; Enschede, The Netherlands
| | - Lorenzo Moroni
- Department of Tissue Regeneration; MIRA Institute for Biomedical Technology and Technical Medicine; University of Twente; Enschede, The Netherlands
| | - Clemens van Blitterswijk
- Department of Tissue Regeneration; MIRA Institute for Biomedical Technology and Technical Medicine; University of Twente; Enschede, The Netherlands
| | - Pamela Habibovic
- Department of Tissue Regeneration; MIRA Institute for Biomedical Technology and Technical Medicine; University of Twente; Enschede, The Netherlands
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Walschot LHB, Aquarius R, Schreurs BW, Verdonschot N, Buma P. Osteoconduction of impacted porous titanium particles with a calcium-phosphate coating is comparable to osteoconduction of impacted allograft bone particles: in vivo study in a nonloaded goat model. J Biomed Mater Res B Appl Biomater 2012; 100:1483-9. [PMID: 22707449 DOI: 10.1002/jbm.b.32716] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Revised: 03/12/2012] [Accepted: 03/15/2012] [Indexed: 11/11/2022]
Abstract
AIMS Impaction grafting restores bone defects in hip arthroplasty. Defects are reconstructed with bone particles (BoP) as substitute materials with adequate mechanical and biological properties are not yet available. Ceramic particles (CeP) have mechanical drawbacks as opposed to porous titanium particles (TiP). In this in vivo study, bone ingrowth and bone volume in coated and noncoated TiP were compared to porous biphasic calcium-phospate CeP and allograft BoP. Coatings consisted of silicated calcium-phosphate and carbonated apatite. Materials were implanted in goats and impacted in cylindrical defects (diameter 8 mm) in the cancellous bone of the femur. On the basis of fluorochrome labeling and histology, bone ingrowth distance was measured at 4, 8, and 12 weeks. Cross-sectional bone area was measured at 12 weeks. FINDINGS TiP created a coherent matrix of entangled particles. CeP pulverized and were noncoherent. Bone ingrowth in TiP improved significantly by the coatings to levels comparable to BoP and CeP. Cross-sectional bone area was smaller in CeP and TiP compared to BoP. CONCLUSIONS The osteoconductive properties of impacted TiP with a calcium-phosphate coating are comparable to impacted allograft bone and impacted biphasic ceramics. A more realistic loaded in vivo study should prove that coated TiP is an attractive alternative to allograft bone.
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Affiliation(s)
- Lucas H B Walschot
- Department of Orthopedics, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
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Ajami E, Aguey-Zinsou KF. Calcium phosphate growth at electropolished titanium surfaces. J Funct Biomater 2012; 3:327-48. [PMID: 24955535 PMCID: PMC4047935 DOI: 10.3390/jfb3020327] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 03/21/2012] [Accepted: 04/11/2012] [Indexed: 11/16/2022] Open
Abstract
This work investigated the ability of electropolished Ti surface to induce Hydroxyapatite (HA) nucleation and growth in vitro via a biomimetic method in Simulated Body Fluid (SBF). The HA induction ability of Ti surface upon electropolishing was compared to that of Ti substrates modified with common chemical methods including alkali, acidic and hydrogen peroxide treatments. Our results revealed the excellent ability of electropolished Ti surfaces in inducing the formation of bone-like HA at the Ti/SBF interface. The chemical composition, crystallinity and thickness of the HA coating obtained on the electropolished Ti surface was found to be comparable to that achieved on the surface of alkali treated Ti substrate, one of the most effective and popular chemical treatments. The surface characteristics of electropolished Ti contributing to HA growth were discussed thoroughly.
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Affiliation(s)
- Elnaz Ajami
- School of Engineering and Materials Science, University of London, Queen Mary, London E1 4NS, UK.
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Jimbo R, Xue Y, Hayashi M, Schwartz-Filho HO, Andersson M, Mustafa K, Wennerberg A. Genetic responses to nanostructured calcium-phosphate-coated implants. J Dent Res 2011; 90:1422-7. [PMID: 21933935 DOI: 10.1177/0022034511422911] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Nanostructured calcium phosphate (CaP) has been histologically and biomechanically proven to enhance osseointegration of implants; however, conventional techniques were not sufficiently sensitive to capture its biological effects fully. Here, we compared the conventional removal torque (RTQ) evaluation and gene expression in tissues around nanostructured CaP-coated implants, using real-time RT-PCR, with those of uncoated implants, in a rabbit model. At 2 wks, RTQ values were significantly higher, alkaline phosphatase (ALP) expression was significantly higher, and runt-related transcription factor 2 and tumor necrosis factor-α expressions were significantly lower in the coated than in the uncoated implants. This indicates that inflammatory responses were suppressed and osteoprogenitor activity increased around the CaP-coated surface. At 4 wks, although RTQ values did not significantly differ between the 2 groups, ALP and osteocalcin (OCN) were significantly up-regulated in the coated group, indicating progressive mineralization of the bone around the implant. Moreover, an osteoclast marker, adenosine triphosphatase, which indicates acidification of the resorption lacunae, was significantly higher for the coated implants, suggesting gradual resorption of the CaP coating. This study reveals detailed genetic responses to nanostructured CaP-coated implants and provides evidence that the effect of nanotopography is significant during the osseointegration cascade.
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Affiliation(s)
- R Jimbo
- Surface Biology Group, Department of Prosthodontics, Faculty of Odontology, Malmö University, 205 06 Malmö, Sweden.
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ten Broeke RHM, Alves A, Baumann A, Arts JJC, Geesink RGT. Bone reaction to a biomimetic third-generation hydroxyapatite coating and new surface treatment for the Symax hip stem. ACTA ACUST UNITED AC 2011; 93:760-8. [PMID: 21586774 DOI: 10.1302/0301-620x.93b6.24986] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Four uncemented Symax hip stems were extracted at three weeks and nine, 13 and 32 months, respectively, for reasons other than loosening. The reasons for implant removal were infection in two cases, recurrent dislocation in one and acetabular fracture in one. They were analysed to assess the effect and behaviour of an electrochemically deposited, completely resorbable biomimetic BONIT-hydroxyapatite (HA) coating (proximal part) and a DOTIZE surface treatment (distal part) using qualitative histology, quantitative histomorphometry and scanning electron microscopy (SEM). Early and direct bone-implant bonding with signs of active remodelling of bone and the HA coating were demonstrated by histology and SEM. No loose BONIT-HA particles or delamination of the coating were observed, and there was no inflammation or fibrous interposition at the interface. Histomorphometry showed bone-implant contact varying between 26.5% at three weeks and 83.5% at 13 months at the HA-coated implant surface. The bone density in the area of investigation was between 24.6% at three weeks and 41.1% at 32 months. The DOTIZE surface treatment of the distal part of the stem completely prevented tissue and bone apposition in all cases, thereby optimising proximal stress transfer. The overall features of this implant, in terms of geometry and surface texture, suggest a mechanically stable design with a highly active biomimetic coating, resulting in rapid and extensive osseo-integration, exclusively in the metaphyseal part of the stem. Early remodelling of the HA coating does not seem to have a detrimental effect on short-term bone-implant coupling. There were no adverse effects identified from either the BONIT-HA coating or the DOTIZE surface treatment.
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Affiliation(s)
- R. H. M. ten Broeke
- Department of Orthopaedic Surgery, Maastricht University Medical Centre, P. O. Box 5800, 6202AZ Maastricht, The Netherlands
| | - A. Alves
- Biomatech - Namsa Company, Z. I. de L’Islon, 115 Rue Pasteur, 38670 Chasse-sur-Rhône, France
| | - A. Baumann
- DOT GmbH, Charles-Darwin-Ring 1a, D-18059 Rostock, Germany
| | - J. J. C. Arts
- Department of Orthopaedic Surgery, Maastricht University Medical Centre, P. O. Box 5800, 6202AZ Maastricht, The Netherlands
| | - R. G. T. Geesink
- Department of Orthopaedic Surgery, Maastricht University Medical Centre, P. O. Box 5800, 6202AZ Maastricht, The Netherlands
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Yu X, Wei M. Preparation and evaluation of parathyroid hormone incorporated CaP coating via a biomimetic method. J Biomed Mater Res B Appl Biomater 2011; 97:345-54. [PMID: 21432993 DOI: 10.1002/jbm.b.31820] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 12/07/2010] [Accepted: 12/29/2010] [Indexed: 11/11/2022]
Abstract
Parathyroid hormone (PTH) is a potent bone growth stimulator used for osteoporosis treatment. However, the inconvenience of daily administration and side effect of systemic exposure severely limit its use in clinical applications. Local, controlled delivery is a promising approach which can maintain therapeutic concentration locally for a long period. In this study, PTH was incorporated into a biomimetic calcium phosphate (CaP) coating via a coprecipitation process in a modified simulated body fluid (m-SBF). It was found that PTH was successfully incorporated into biomimetic CaP coating on titanium surface with a high incorporation efficiency. The incorporation of PTH into coatings had significantly changed the coating morphology, but the composition of the coating remained unchanged. Localized release of PTH had occurred in vitro, and was accompanied with partial dissolution of CaP coatings. Cell culture study demonstrated that the PTH released from CaP coatings fully retained its bioactivity. It had improved substantially MC3T3-E1 cell proliferation but slightly delayed the expression of alkaline phosphatase (ALP) of the cells. In summary, our results have shown that CaP coatings incorporated with PTH may be a promising approach for osteoporosis and other bone-related disease treatment in the future.
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Affiliation(s)
- Xiaohua Yu
- Department of Chemical, Materials and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, USA
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Hägi TT, Enggist L, Michel D, Ferguson SJ, Liu Y, Hunziker EB. Mechanical insertion properties of calcium-phosphate implant coatings. Clin Oral Implants Res 2011; 21:1214-22. [PMID: 20546252 DOI: 10.1111/j.1600-0501.2010.01916.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To investigate the influence of protein incorporation on the resistance of biomimetic calcium-phosphate coatings to the shear forces that are generated during implant insertion. MATERIALS AND METHODS Thirty-eight standard (5 × 13 mm) Osseotite® implants were coated biomimetically with a layer of calcium phosphate, which either lacked or bore a co-precipitated (incorporated) depot of the model protein bovine serum albumin (BSA). The coated implants were inserted into either artificial bone (n=18) or the explanted mandibles of adult pigs (n=12). The former set-up was established for the measurement of torque and of coating losses during the insertion process. The latter set-up was established for the histological and histomorphometric analysis of the fate of the coatings after implantation. RESULTS BSA-bearing coatings had higher mean torque values than did those that bore no protein depot. During the insertion process, less material was lost from the former than from the latter type of coating. The histological and histomorphometric analysis revealed fragments of material to be sheared off from both types of coating at vulnerable points, namely, at the tips of the threads. The sheared-off fragments were retained within the peri-implant space. CONCLUSION The incorporation of a protein into a biomimetically prepared calcium-phosphate coating increases its resistance to the shear forces that are generated during implant insertion. In a clinical setting, the incorporated protein would be an osteogenic agent, whose osteoinductive potential would not be compromised by the shearing off of coating material, and the osteoconductivity of an exposed implant surface would not be less than that of a coated one.
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Affiliation(s)
- Tobias T Hägi
- Center of Regenerative Medicine for Skeletal Tissues, Department of Clinical Research, University of Bern, Bern, Switzerland
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Abstract
The long-term clinical success of dental implants is related to their early osseointegration. This paper reviews the different steps of the interactions between biological fluids, cells, tissues, and surfaces of implants. Immediately following implantation, implants are in contact with proteins and platelets from blood. The differentiation of mesenchymal stem cells will then condition the peri-implant tissue healing. Direct bone-to-implant contact is desired for a biomechanical anchoring of implants to bone rather than fibrous tissue encapsulation. Surfaces properties such as chemistry and roughness play a determinant role in these biological interactions. Physicochemical features in the nanometer range may ultimately control the adsorption of proteins as well as the adhesion and differentiation of cells. Nanotechnologies are increasingly used for surface modifications of dental implants. Another approach to enhance osseointegration is the application of thin calcium phosphate (CaP) coatings. Bioactive CaP nanocrystals deposited on titanium implants are resorbable and stimulate bone apposition and healing. Future nanometer-controlled surfaces may ultimately direct the nature of peri-implant tissues and improve their clinical success rate.
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40
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Winkler T, Hoenig E, Gildenhaar R, Berger G, Fritsch D, Janssen R, Morlock M, Schilling A. Volumetric analysis of osteoclastic bioresorption of calcium phosphate ceramics with different solubilities. Acta Biomater 2010; 6:4127-35. [PMID: 20451677 DOI: 10.1016/j.actbio.2010.04.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Revised: 03/18/2010] [Accepted: 04/20/2010] [Indexed: 10/19/2022]
Abstract
Commonly, to determine osteoclastic resorption of biomaterials only the resorbed area is measured. The depth of the resorption pit, however, may also be important for the performance of a material. To generate such data we used two calcium phosphate ceramics (Ca(10) and Ca(2)). The solubility of the materials was determined according to DIN EN ISO 10993-14. They were scanned three-dimensionally using infinite focus microscopy and subsequently cultivated for 4 weeks in simulated body fluid without (control) or with human osteoclasts. After this cultivation period osteoclasts number was determined and surface changes were evaluated two- and three-dimensionally. Ca(10) and Ca(2) showed solubilities of 11.0+/-0.5 and 23.0+/-2.2 mgg(-1), respectively. Both materials induced a significant increase in osteoclast number. While Ca(10) did not show osteoclastic resorption, Ca(2) showed an increased pit area and pit volume due to osteoclastic action. This was caused by an increased average pit depth and an increased number of pits, while the average area of single pits did not change significantly. The deduced volumetric osteoclastic resorption rate (vORR) of Ca(2) (0.01-0.02 microm(3)microm(-2)day(-1)) was lower than the remodelling speed observed in vivo (0.08 microm(3)microm(-2)day(-1)), which is in line with the observation that implanted resorbable materials remain in the body longer than originally expected. Determination of volumetric indices of osteoclastic resorption might be valuable in obtaining additional information about cellular resorption of bone substitute materials. This may help facilitate the development of novel materials for bone substitution.
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Combes C, Rey C. Amorphous calcium phosphates: synthesis, properties and uses in biomaterials. Acta Biomater 2010; 6:3362-78. [PMID: 20167295 DOI: 10.1016/j.actbio.2010.02.017] [Citation(s) in RCA: 336] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Revised: 02/07/2010] [Accepted: 02/10/2010] [Indexed: 10/19/2022]
Abstract
This review paper on amorphous calcium phosphates (ACPs) provides an update on several aspects of these compounds which have led to many studies and some controversy since the 1970s, particularly because of the lack of irrefutable proof of the occurrence of an ACP phase in mineralised tissues of vertebrates. The various synthesis routes of ACPs with different compositions are reported and the techniques used to characterise this phase are reviewed. We focus on the various physico-chemical properties of ACPs, especially the reactivity in aqueous media, which have been exploited to prepare bioactive bone substitutes, particularly in the form of coatings and cements for orthopaedic applications and composites for dental applications.
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Suzuki O. Octacalcium phosphate: osteoconductivity and crystal chemistry. Acta Biomater 2010; 6:3379-87. [PMID: 20371385 DOI: 10.1016/j.actbio.2010.04.002] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Revised: 03/31/2010] [Accepted: 04/01/2010] [Indexed: 12/20/2022]
Abstract
Octacalcium phosphate (OCP), which is structurally similar to hydroxyapatite (HA), is a possible precursor of bone apatite crystals. Although disagreement remains as to whether OCP comprises the initial mineral crystals in the early stage of bone mineralization, the results of recent biomaterial studies using synthetic OCP indicate the potential role of OCP as a bone substitute material, owing to its highly osteoconductive and biodegradable characteristics. OCP tends to convert to HA not only in an in vitro environment, but also as an implant in bone defects. Several lines of evidence from both in vivo and in vitro studies suggest that the conversion process could be involved in the stimulatory capacity of OCP for osteoblastic differentiation and osteoclast formation. However, the osteoconductivity of OCP cannot always be secured if an OCP with distinct crystal characteristics is used, because the stoichiometry and microstructure of OCP crystals greatly affect bone-regenerative properties. Osteoconductivity and stimulatory capabilities may be caused by the chemical characteristics of OCP, which allows the release or exchange of calcium and phosphate ions with the surrounding of this salt, and its tendency to grow towards specific crystal faces, which could be a variable of the synthesis condition. This paper reviews the effect of calcium phosphates on osteoblastic activity and bone regeneration, with a special emphasis on OCP, since OCP seems to be performing better than other calcium phosphates in vivo.
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Affiliation(s)
- O Suzuki
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, 4-1, Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.
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Nijhuis AWG, Leeuwenburgh SCG, Jansen JA. Wet-Chemical Deposition of Functional Coatings for Bone Implantology. Macromol Biosci 2010; 10:1316-29. [DOI: 10.1002/mabi.201000142] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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44
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Se-Ho P, Bin SW, Ho KK, Ju SD, Sung-Am C. The effect of water pyrolysis on the removal torque of titanium implant inserted in rabbit tibias. Clin Oral Implants Res 2010; 22:157-64. [PMID: 20678134 DOI: 10.1111/j.1600-0501.2010.01971.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The aim of this study is to examine the effect of oxidation with water pyrolysis (OWP) method on titanium (Ti) implants by comparing the bonding strength between bone and Ti implants that were inserted in the proximal tibia metaphysic of a rabbit for 12 weeks. The removal torque was measured to evaluate the bonding strength for different Ti implants with and without the OWP method. MATERIAL AND METHODS Nine sets of threaded Ti implants (ASTM grade 2) of diameter 3.75 mm and length 5 mm were prepared for the experiment. Each set was composed of four specimens; one was machine-prepared (group D) and the other three were threaded followed by the OWP method at 300°C (group A), 600°C (group B), and 800°C (group C) for 10 min, respectively. Each set was used for each adult rabbit. To eliminate the effect of the sites or the legs, each rabbit received all four implants, two in the left and two in the right leg, inserted in the proximal tibia metaphyses of the left leg, using a fixed block randomization. After 12 weeks, removal torque tests were carried out. RESULTS The mean removal torque for the control group D was 16.19 N cm, while the mean removal torque values for the OWP groups A, B, and C were 26.75, 31.51, and 41.05 N cm, respectively. The removal torques obtained from the OWP groups B and C (showing the rutile oxide structure) were significantly greater than that for the control group by Bonferroni's-corrected Wilcoxon's signed-rank test (P<0.05). CONCLUSION The strongest bonding between bone and group C (OWP method at 800°C) was confirmed by the comparison of removal torques.
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Affiliation(s)
- Park Se-Ho
- Department of Prosthodontics, College of Dentistry, Kyungpook National University, 188-1 Samduck 2-Ga, Daegu, South Korea
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Detsch R, Hagmeyer D, Neumann M, Schaefer S, Vortkamp A, Wuelling M, Ziegler G, Epple M. The resorption of nanocrystalline calcium phosphates by osteoclast-like cells. Acta Biomater 2010; 6:3223-33. [PMID: 20206720 DOI: 10.1016/j.actbio.2010.03.003] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Revised: 02/24/2010] [Accepted: 03/01/2010] [Indexed: 12/30/2022]
Abstract
Nanocrystalline calcium phosphates containing carbonate have a high similarity to bone mineral. The reactions of bone cells (primary osteoblasts and osteoclast-like cells) on these materials as well as on sintered beta-tricalcium phosphate and hydroxyapatite (HA) confirmed a good biocompatibility of the nanocrystalline samples. However, osteoclastic differentiation was constrained on the carbonate-rich samples, leading to a small number of osteoclast-like cells on the materials and few resorption pits. The grain size of the calcium phosphate ceramics (nano vs. micro) was less important than expected from to physico-chemical considerations. When comparing the nanocrystalline samples, the highest resorption rate was found for nano-HA with a low carbonate content, which strongly stimulated the differentiation of osteoclast-like cells on its surface.
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Affiliation(s)
- R Detsch
- BioCer EntwicklungsGmbH, Ludwig-Thoma-Str. 36c, 95447 Bayreuth, Germany.
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Abstract
Bone resorption by osteoclasts depends on the assembly of a specialized, actin-rich adhesive 'sealing zone' that delimits the area designed for degradation. In this study, we show that the level of roughness of the underlying adhesive surface has a profound effect on the formation and stability of the sealing zone and the associated F-actin. As our primary model substrate, we use 'smooth' and 'rough' calcite crystals with average topography values of 12 nm and 530 nm, respectively. We show that the smooth surfaces induce the formation of small and unstable actin rings with a typical lifespan of approximately 8 minutes, whereas the sealing zones formed on the rough calcite surfaces are considerably larger, and remain stable for more than 6 hours. It was further observed that steps or sub-micrometer cracks on the smooth surface stimulate local ring formation, raising the possibility that similar imperfections on bone surfaces may stimulate local osteoclast resorptive activity. The mechanisms whereby the physical properties of the substrate influence osteoclast behavior and their involvement in osteoclast function are discussed.
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Affiliation(s)
- Dafna Geblinger
- Department of Structural Biology, Weizmann Institute of Science, Rehovot 76100, Israel
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Yang L, Perez-Amodio S, Barrère-de Groot FYF, Everts V, van Blitterswijk CA, Habibovic P. The effects of inorganic additives to calcium phosphate on in vitro behavior of osteoblasts and osteoclasts. Biomaterials 2010; 31:2976-89. [PMID: 20122718 DOI: 10.1016/j.biomaterials.2010.01.002] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Accepted: 01/03/2010] [Indexed: 11/19/2022]
Abstract
This study describes a medium-throughput system based on deposition of calcium phosphate films in multi-well tissue culture plates that can be used to study the effect of inorganic additives on the behavior of osteoblasts and osteoclasts in a standardized manner. All tested elements, copper, zinc, strontium, fluoride and carbonate were homogenously deposited into calcium phosphate films in varying concentrations by using a biomimetic approach. The additives affected morphology and composition of calcium phosphate films to different extent, depending on the concentration used. The effect on proliferation and differentiation of MC3T3-E1 osteoblasts depended on the compound and concentration tested. In general, copper and zinc ions showed an inhibitory effect on osteoblast proliferation, the effect of strontium was concentration dependent, whereas films containing fluoride and carbonate, respectively, augmented osteoblast proliferation. Copper and zinc had no effect or were mild inhibitory on osteoblast differentiation, while strontium, fluoride and carbonate ions demonstrated a clear decrease in differentiation in comparison to the control films without additives. Primary osteoclasts cultured on calcium phosphate films containing additives showed a significantly decreased resorptive activity as compared to the control, independent on the element incorporated. No cytotoxic effect of the elements in the concentrations tested was observed. The system presented in this study mimics bone mineral containing trace elements, making it useful for studying fundamental processes of bone formation and turnover. The present results can be used for modifying bone graft substitutes by addition of inorganic additives in order to affect their performance in bone repair and regeneration.
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Affiliation(s)
- Liang Yang
- Department of Tissue Regeneration, University of Twente, Enschede, The Netherlands
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Chrzanowski W, Valappil SP, Dunnill CW, Abou Neel EA, Lee K, Parkin IP, Wilson M, Armitage DA, Knowles JC. Impaired bacterial attachment to light activated Ni–Ti alloy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2010; 30:225-234. [DOI: 10.1016/j.msec.2009.10.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Revised: 09/28/2009] [Accepted: 10/13/2009] [Indexed: 11/26/2022]
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Matsui A, Anada T, Masuda T, Honda Y, Miyatake N, Kawai T, Kamakura S, Echigo S, Suzuki O. Mechanical Stress-Related Calvaria Bone Augmentation by Onlayed Octacalcium Phosphate–Collagen Implant. Tissue Eng Part A 2010; 16:139-51. [DOI: 10.1089/ten.tea.2009.0284] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Aritsune Matsui
- Division of Oral Surgery, Tohoku University Graduate of Dentistry, Sendai, Japan
- Division of Craniofacial Function Engineering, Tohoku University Graduate of Dentistry, Sendai, Japan
| | - Takahisa Anada
- Division of Craniofacial Function Engineering, Tohoku University Graduate of Dentistry, Sendai, Japan
| | - Taisuke Masuda
- Division of Craniofacial Function Engineering, Tohoku University Graduate of Dentistry, Sendai, Japan
| | - Yoshitomo Honda
- Division of Craniofacial Function Engineering, Tohoku University Graduate of Dentistry, Sendai, Japan
| | - Naohisa Miyatake
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tadashi Kawai
- Division of Oral Surgery, Tohoku University Graduate of Dentistry, Sendai, Japan
- Division of Craniofacial Function Engineering, Tohoku University Graduate of Dentistry, Sendai, Japan
| | - Shinji Kamakura
- Bone Regenerative Engineering Laboratory, Tohoku University Graduate School of Biomedical Engineering, Sendai, Japan
| | - Seishi Echigo
- Division of Oral Surgery, Tohoku University Graduate of Dentistry, Sendai, Japan
| | - Osamu Suzuki
- Division of Craniofacial Function Engineering, Tohoku University Graduate of Dentistry, Sendai, Japan
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50
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Singhatanadgit W. Biological Responses to New Advanced Surface Modifications of Endosseous Medical Implants. ACTA ACUST UNITED AC 2009. [DOI: 10.4137/btri.s3150] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Implantable medical devices are increasingly important in the practice of modern medicine. However, patients with severely poor bone quality and quantity require highest implant osseointegration for the long-term success. A number of newly-developed advanced surface modifications of medical implants have recently been introduced to the medical implant system. Understanding the mechanisms by which osteogenic cells respond to such materials is therefore of major importance in developing the most effective materials to promote functional osseointegration. Diverse studies using materials with a wide range of new surface modification techniques have demonstrated the pivotal role of surface treatments in cell adhesion, proliferation and lineage specific differentiation. These events underlie the tissue responses required for bone healing following implant placement, with the interaction between adsorbed proteins on the implant surface and surrounding cells eliciting body responses to the treated implant surface. This review illustrates tissue responses to the implant material following implant placement and highlights cellular responses to new advanced implant surface modifications. Such information is of utmost importance to further develop several new advanced surface modifications to be used in the new era medical implantable devices.
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Affiliation(s)
- Weerachai Singhatanadgit
- Faculty of Dentistry, Thammasat University, 99 Moo 18, Paholyothin Rd., Klong-Luang, Pathum-Thani, Thailand
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