



@article {2321,
	title = {Cytotoxicity evaluation of nanocrystalline diamond coatings by fibroblast cell cultures},
	journal = {Acta BiomaterialiaActa Biomater.},
	volume = {5},
	year = {2009},
	note = {Cited By (since 1996): 8Export Date: 21 November 2012Source: Scopusdoi: 10.1016/j.actbio.2008.08.015PubMed ID: 18819854Language of Original Document: EnglishCorrespondence Address: Amaral, M.; CICECO, Department of Ceramics and Glass Engineering, University of Aveiro, 3810-193 Aveiro, Portugal; email: margarida.amaral@ua.ptChemicals/CAS: 3 (4,5 dimethyl 2 thiazolyl) 2,5 diphenyltetrazolium bromide, 298-93-1; diamond, 7782-40-3; polystyrene, 9003-53-6; silicon nitride, 12033-89-5; Culture Media; Diamond, 7782-40-3References: Griffin, J., Ray, P.C., Role of inert gas in the low-temperature nano-diamond chemical vapour deposition process (2006) Nanotechnology, 17, pp. 1225-1229;Mitura, S., Mitura, K., Niedzielski, P., Louda, P., Danilenko, V., Nanocrystalline diamond, its synthesis, properties and applications (2006) J Achievements Mater Manuf Eng, 16, pp. 9-16; 
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},
	month = {2009///},
	pages = {755 - 763},
	abstract = {The cytotoxicity profile of nanocrystalline diamond (NCD) coatings on a Si                        3N
                        4 ceramic was investigated. This material is envisaged to have biomedical dental applications such as burrs and surgical instruments. Two fibroblast cell culture systems were used to address the cytotoxicity of NCD-coated samples: L929 cells (a mouse permanent cell line) and human gingival fibroblasts. Cell behavior was evaluated in terms of cell adhesion, cell viability/proliferation (mitochondrial function, MTT assay) and the pattern of cell growth. Fibroblast cell behavior on standard polystyrene culture plates was used as control, as Si
                        3N
                        4 substrates have previously been shown to be biocompatible. NCD coatings provided a suitable surface for cell attachment, spreading and proliferation. Human gingival cells showed a homogeneous cytoplasm spreading, a flattened elongated morphology and a typical parallel alignment on confluent cultures. In comparison, L929 cells denoted a lower cytoplasm expansion, a heterogeneous spreading but a higher proliferation rate. For both cells, after few days, the NCD coating was completely covered with continuous cell layers. As compared to standard polystyrene culture plates, no deleterious or cytotoxic responses were observed with L929 and human fibroblast cell cultures, and in both a slight enhancement in cell proliferation was observed. In addition, the seeded NCD film allowed reproduction of the typical features of the two cell culture systems tested, further suggesting the lack of cytotoxicity of this coating. {\textcopyright} 2008 Acta Materialia Inc.
},
	keywords = {3 (4,5 dimethyl 2 thiazolyl) 2,5 diphenyltetrazolium bromide, animal cell, Animals, article, Biocompatibility, Biomedical dental applications, biomedicine, cell adhesion, Cell Division, cell function, cell growth, Cell Line, cell proliferation, cell spreading, cell structure, cell surface, cell survival, cell viability, ceramics, controlled study, Culture Media, cytoplasm, Cytotoxicity, dentistry, diamond, Fibroblast cell cultures, fibroblast culture, Fibroblasts, gingiva, human, human cell, Humans, material coating, Mice, Microscopy, Electron, Scanning, mitochondrial respiration, mouse, nanocrystal, Nanocrystalline diamond coating, Nanostructures, nonhuman, polystyrene, priority journal, Silicon nitride, Surgical instrument},
	isbn = {17427061 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-58049191417\&partnerID=40\&md5=f75616146e61ce84434c5481a2b8eec3},
	author = {Amaral, M. and Gomes, P.S. and Lopes, M.A. and Santos, J.D. and Silva, R.F. and Fernandes, M.H.}
}
@article {2341,
	title = {Nanocrystalline diamond as a coating for joint implants: Cytotoxicity and biocompatibility assessment},
	journal = {Journal of NanomaterialsJ. Nanomater.},
	volume = {2008},
	year = {2008},
	note = {Cited By (since 1996): 6Export Date: 21 November 2012Source: ScopusArt. No.: 894352doi: 10.1155/2008/894352Language of Original Document: EnglishCorrespondence Address: Silva, R. F.; Departamento de Engenharia Cer{\^a}mica e Vidro, Centro de Investiga{\c c}{\~a}o em Materiais Cer{\^a}micos e Comp{\'o}sitos (CICECO), Universidade de Aveiro, 3810-193 Aveiro, Portugal; email: rsilva@ua.ptReferences: Grabarczyk, J., Batory, D., Louda, P., Couvrat, P., Kotela, I., Bakowicz Mitura, K., Carbon coatings for medical implants (2007) Journal of Achievements in Materials and Manufacturing Engineering, 20 (20), pp. 107-110;Jakubowski, W., Bartosz, G., Niedzielski, P., Szymanski, W., Walkowiak, B., Nanocrystalline diamond surface is resistant to bacterial colonization (2004) Diamond and Related Materials, 13 (10), pp. 1761-1763; 
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},
	month = {2008///},
	abstract = {Nanocrystalline diamond (NCD) coatings combine a very low surface roughness with the outstanding diamond properties, such as superlative hardness, low self-friction coefficient, high wear and corrosion resistance, and biotolerance, which are ideal features for applications in medicine (knee and hip replacement) and surgical tools. The present work presents a comprehensive study of the cytotoxicity and biocompatibility of NCD films grown by hot-filament chemical vapour deposition (HFCVD) technique, aiming such future applications. Cytotoxicity was evaluated in vitro by seeding human gingival fibroblasts on the NCD surface for 14 days, while specific biocompatibility was assessed on samples seeded with human bone marrow-derived osteoblasts during 21 days. The NCD coatings proved to be noncytotoxic in the preliminary human gingival fibroblast cell cultures, as denoted by a notable sequence of cell attachment, spreading, and proliferation events. In the specific biocompatibility assay envisaging bone tissue applications, NCD coatings induced human osteoblast proliferation and the stimulation of differentiation markers, compared to standard polystyrene tissue culture plates. Copyright {\textcopyright} 2008.},
	isbn = {16874110 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-49749138226\&partnerID=40\&md5=4ff56cef8d03fc8708bd965fe1b64ee0},
	author = {Amaral, M. and Gomes, P.S. and Lopes, M.A. and Santos, J.D. and Silva, R.F. and Fernandes, M.H.}
}
@article {2337,
	title = {Nanocrystalline diamond: In vitro biocompatibility assessment by MG63 and human bone marrow cells cultures},
	journal = {Journal of Biomedical Materials Research - Part AJ. Biomed. Mater. Res. Part A},
	volume = {87},
	year = {2008},
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},
	month = {2008///},
	pages = {91 - 99},
	abstract = {Nanocrystalline diamond (NCD) has a great potential for prosthetic implants coating. Nevertheless, its biocompatibility still has to be better understood. To do so, we employed several materials characterization techniques (SEM, AFM, micro-Raman spectroscopy) and cell culture assays using MG63 osteoblast-like and human bone marrow cells. Biochemical routines (MTT assays, Lowry{\textquoteright}s method, ALP activity) supported by SEM and confocal microscopy characterization were carried out. We used silicon nitride (Si                        3N
                        4) substrates for NCD coatings based on a previous demonstration of the superior adhesion and tribological performance of these NCD coated ceramics. Results demonstrate an improved human osteoblast proliferation and the stimulation of differentiated markers, like ALP activity and matrix mineralization, compared with standard polystyrene tissue culture plates. The nanometric featuring of NCD, associated to its chemical affinity are key points for bone regeneration purposes. {\textcopyright} 2007 Wiley Periodicals, Inc.
},
	keywords = {adult, alkaline phosphatase, ALP activity, Animal cell culture, Architectural acoustics, article, Atomic force microscopy, Biocompatibility, Bone, bone marrow cell, Bone Marrow Cells, Bone Regeneration, Cell culture, cell proliferation, cell survival, Cells, Cells, Cultured, ceramics, Cladding (coating), Coated Materials, Biocompatible, confocal microscopy, controlled study, diamond, Diamonds, enzyme activity, extracellular matrix, human, Human bone marrow cells, human cell, Humans, Imaging techniques, Implants (surgical), In vitro biocompatibility, in vitro selection, Joint replacement, male, Materials characterization, materials testing, Micro-Raman spectroscopy, Microscopic examination, Microscopy, Atomic Force, Microscopy, Confocal, Microscopy, Electron, Scanning, mineralization, MTT assaying, Nano-crystalline diamond, nanocrystal, Nanocrystalline alloys, Nanocrystalline materials, nanoparticles, Nanostructured materials, Nitrides, Nonmetals, osteoblast, Osteoblasts, polystyrene, Prostheses and Implants, Raman spectrometry, Scanning electron microscopy, Secondary emission, Silicon, Silicon compounds, Silicon nitride, Spectrum Analysis, Raman, Surface Properties, Tissue engineering},
	isbn = {15493296 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-51849084188\&partnerID=40\&md5=a41a73f23c0c63950b4613f44d51bd23},
	author = {Amaral, M. and Dias, A.G. and Gomes, P.S. and Lopes, M.A. and Silva, R.F. and Santos, J.D. and Fernandes, M.H.}
}
@article {2535,
	title = {Densification route and mechanical properties of Si                    3N
                    4-bioglass biocomposites
},
	journal = {BiomaterialsBiomaterials},
	volume = {23},
	year = {2002},
	note = {Cited By (since 1996): 33Export Date: 21 November 2012Source: ScopusCODEN: BIMADdoi: 10.1016/S0142-9612(01)00194-6PubMed ID: 11771704Language of Original Document: EnglishCorrespondence Address: Santos, J.D.; Sec{\c c}{\~a}o de Materiais, Fac. Eng. da Univ. do Porto (FEUP), Universidade do Porto, Rua Roberto Frias, 4200-465 Porto Cedex, Portugal; email: jdsantos@fe.up.ptChemicals/CAS: Biocompatible Materials; Bioglass; Ceramics; Composite Resins; Silicon Compounds; silicon nitride, 12033-89-5Tradenames: BioglassReferences: Kue, R., Sohrabi, A., Nagle, D., Frondonza, C., Hungerford, D., Enhanced proliferation and osteacalcin production by human osteablast-like cells on silicon nitride ceramic discs (1999) Biomaterials, 20, pp. 1195-1201;Howlett, C., McCartney, E., Ching, W., The effects of silicon nitride ceramic on rabbit skeletal cells and tissues (1989) Clin Orthop, 244, pp. 296-301; 
Hench, L.L., Biomaterials: A forecast for the future (1998) Biomaterials, 19, pp. 1419-1423; 
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},
	month = {2002///},
	pages = {857 - 862},
	abstract = {The processing route and the final microstructural and mechanical characteristics of a novel biomaterial composite are described. This new material is composed of 70 wt\% Si                        3N
                        4 ceramic phase and 30 wt\% bioglass, the later performing as a liquid sintering aid system and simultaneously providing bioactivity characteristics to the composite. The conditions for fabrication of an almost fully dense material (\~{}98\% of relative density) were pursued. Optimised parameters were 1350{\textdegree}C-40min-30 MPa by hot-pressing technique. The very fast densification rate of the process avoided the crystallisation of the bioglass intergranular phase and therefore its intrinsic properties were maintained. Also, the large amount of glassy phase assured the densification by liquid phase assisted grain rearrangement without Si
                        3N
                        4 phase transformation. The final mechanical properties of the Si
                        3N
                        4-bioglass were as follows: fracture toughness, K
                        IC = 4.4 MPa m
                        1/2; Vickers hardness, H
                        V = 10.3 GPa; Young{\textquoteright}s modulus, E = 197 GPa; bending strength, σ
                        R = 383 MPa; Weibull modulus, m = 8.3. These values provide an attractive set of properties among other bioactive materials, namely by upgrading the main drawback of bioceramics and bioglasses for high-load medical applications, which is the lack of satisfactory fracture toughness. {\textcopyright} 2001 Elsevier Science Ltd. All rights reserved.
},
	keywords = {3N, 4-bioglass composites, article, Bending strength, Biocompatible Materials, biomaterial, Biomaterial composites, Biomaterials, Ceramic materials, ceramics, Composite Resins, Crystallization, Densification, Densification behaviour, density, Elastic moduli, Fracture toughness, glass, hardness, heat, Hot pressing, Hot-pressing, Kinetics, Mechanical properties, phase transition, Phase transitions, priority journal, Si, Silicon compounds, silicon derivative, Sintering, strength, Stress, Mechanical, technique, Thermodynamics, Vickers hardness testing, X-Ray Diffraction, young modulus},
	isbn = {01429612 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0036132099\&partnerID=40\&md5=e7c2bb690245a7c1d0c856ec1e6f7fb0},
	author = {Amaral, M. and Lopes, M.A. and Silva, R.F. and Santos, J.D.}
}
@article {2524,
	title = {Si                    3N
                    4-bioglass composites stimulate the proliferation of MG63 osteoblast-like cells and support the osteogenic differentiation of human bone marrow cells
},
	journal = {BiomaterialsBiomaterials},
	volume = {23},
	year = {2002},
	note = {Cited By (since 1996): 31Export Date: 21 November 2012Source: ScopusCODEN: BIMADdoi: 10.1016/S0142-9612(02)00249-1PubMed ID: 12361631Language of Original Document: EnglishCorrespondence Address: Fernandes, M.H.; Faculdade de Medicina Dentaria, Universidade do Porto, Rua Dr Manuel Pereira da Silva, 4200-393 Porto, Portugal; email: mhrf@portugalmail.ptChemicals/CAS: Alkaline Phosphatase, EC 3.1.3.1; Calcium, 7440-70-2; Phosphorus, 7723-14-0; Silicon Compounds; silicon nitride, 12033-89-5References: Amaral, M., Lopes, M.A., Silva, R.F., Santos, J.D., Densification route and mechanical properties of Si 3N 4-bioglass biocomposites (2002) Biomaterials, 23, pp. 857-862;Kue, R., Sahrabi, A., Nagle, D., Frondonza, C., Hungerford, D., Enhanced proliferation and osteocalcin production by human osteoblast-like cells on silicon nitride ceramic discs (1999) Biomaterials, 20, pp. 1195-1201; 
Howlett, C., McCartney, E., Ching, W., The effects of silicon nitride ceramic on rabbit skeletal cells and tissues (1989) Clin Orthop, 244, pp. 296-301; 
Hench, L.L., Biomaterials: A forecast for the future (1998) Biomaterials, 19, pp. 1419-1423; 
Radin, S., Ducheyne, P., Falaize, S., Hammond, A., In vitro transformation of bioactive glass granules into Ca-P shells (2000) J Biomed Mater Res, 49, pp. 264-272; 
Santos, J.D., Amaral, M., Oliveira, S.M., Lopes, M.A., Silva, R.F., Silicon Nitride - Bioglass {\textregistered} 45S5 composite for biomedical applications (2001) Key Eng Mater, 192-195, pp. 589-592; 
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Diniz, M.G., Soares, G.A., Coelho, M.J., Fernandes, M.H., Surface topography modulates the osteogenesis in human bone marrow cell cultures grown on titanium samples prepared by a combination of mechanical and acid treatments (2002) J Mater Sci: Mater Med, 13, pp. 421-432; 
Bellows, C.G., Aubin, J.E., Heersche, J.N.M., Initiation and progression of mineralization of bone nodules formed in vitro: The role of alkaline phosphatase and organic phosphate (1991) Bone Min, 14, pp. 27-40; 
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},
	month = {2002///},
	pages = {4897 - 4906},
	abstract = {The in vitro osteocompatibility of a novel Si                        3N
                        4-bioglass composite (70-30\% weight proportion) with improved mechanical properties (fracture toughness=4.4MPam
                        1/2; bending strength=383{\textpm}47MPa) is reported. Immersion of the composite samples in culture medium (30min to 7 days) resulted in rapid protein adsorption to the surface and, also, dissolution of the intergranular phase of bioglass (time-dependent process) with the formation of different size cavities. "As-received" and pre-treated material samples presented a similar behaviour concerning the proliferation of MG63 osteoblast-like cells, evaluated during a 5-day culture period. Seeded materials showed a higher cell growth rate as compared to cultures performed on the standard plastic culture plates. To assess the osteogenic potential of the composite, "as-received" material samples were seeded with human bone marrow cells and cultured for 35 days in experimental conditions that favour the development of the osteoblastic phenotype. The cell adhesion process was similar to that observed in control cultures. Cells successfully adapted to the irregularities of the surface and were able to grow towards inside the cavities; in addition, osteogenic differentiation occurred with the formation of abundant cell-mediated mineralised deposits. Results suggest that this Si
                        3N
                        4-bioglass composite seems to be a promising candidate for high-stress medical applications. {\textcopyright} 2002 Elsevier Science Ltd. All rights reserved.
},
	keywords = {3N, 4-bioglass composite, Adhesion, Adsorption, alkaline phosphatase, article, Biocompatibility, Bioglass, Biomaterials, bone marrow cell, Bone Marrow Cells, Calcium, cell adhesion, Cell Culture Techniques, cell differentiation, Cell Division, cell growth, cell proliferation, composite material, controlled study, culture medium, Dissolution, glass, Growth kinetics, human, Human bone marrow cells, human cell, Humans, immersion, in vitro study, Mechanical properties, MG63 osteoblast-like cells, Microscopy, Electron, Scanning, osteoblast, Osteoblasts, Osteocompatibility, Osteogenic differentiation, phenotype, phosphorus, priority journal, Proteins, rigidity, Si, Silicon compounds, silicon derivative, surface property, tensile strength, Time Factors},
	isbn = {01429612 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0036888731\&partnerID=40\&md5=2235d0ad5a92fb1ae088f736b6e7ca4d},
	author = {Amaral, M. and Costa, M.A. and Lopes, M.A. and Silva, R.F. and Santos, J.D. and Fernandes, M.H.}
}
@article {2528,
	title = {Wettability and surface charge of Si                    3N
                    4-bioglass composites in contact with simulated physiological liquids
},
	journal = {BiomaterialsBiomaterials},
	volume = {23},
	year = {2002},
	note = {Cited By (since 1996): 18Export Date: 21 November 2012Source: ScopusCODEN: BIMADdoi: 10.1016/S0142-9612(02)00155-2Language of Original Document: EnglishCorrespondence Address: Santos, J.D.; Laborat{\'o}rio de Biomateriais, Inst. de Engenharia Biomedica (INEB), Rua do Campo Alegre, 823, 4150 Porto, Portugal; email: jdsantos@fe.up.ptChemicals/CAS: Serum Albumin, Bovine; Silicon Compounds; silicon nitride, 12033-89-5References: Von Recum, A.F., (1999) Handbook of biomaterials evaluation: scientific, technical, and clinical testing of implant materials, 2nd. ed., , Hemisphere Pub;Davies, J.E., The importance and measurement of surface charge species in cell behaviour at the biomaterial interface (1998) Surface characterisation of biomaterials, 6, pp. 219-234. , Ratner, editor. Progress in Biomedical Engineering. Amsterdam: Elsevier; 
Lampin, M., Warocquier-Cl{\'e}rout, R., Legris, C., Degrange, M., Sigot-Luizard, M.F., Correlation between substratum roughness and wettability, cell adhesion, and cell migration (1997) J Biomed Mater Res, 36, pp. 99-108; 
Dewez, J.L., Schneider, Y.J., Rouxhet, P.G., Coupled influence of substratum hydrophilicity and surfactant on epithelial cell adhesion (1996) J Biomed Mater Res, 30, pp. 373-383; 
Hallab, N.J., Bundy, K., O{\textquoteright}Connor, R., Clark, R., Moses, R.L., Cell adhesion to biomaterials: Correlations between surface charge, surface roughness, adsorbed protein, and cell morphology (1995) J Long-Term Effects Med Implants, 3, pp. 209-231; 
Anselme, K., Osteoblast adhesion on biomaterials (2000) Biomaterials, 7, pp. 667-681; 
Garbassi, Morra, Occhiello, Polymer surfaces, from physics to technology, , Wiley \& Sons, New York [Chapter 4]; 
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Schrader, M.E., Young-Dupre Revisited (1995) Langmuir, 11, pp. 3585-3589; 
Nishizawa, K., Toriyama, M., Effects of the surface wettability and zeta potential of bioceramics on the adhesiveness of anchorage-dependent animal-cells (1993) J Ferment Bioeng, 6, pp. 435-437; 
Suzuki, T., Nishizawa, K., Yokogawa, Y., Kameyama, T., Time-dependent variation of the surface structure of bioceramics in tissue culture medium and the effect on adhesiveness of cells (1996) J Ferment Bioeng, 3, pp. 226-232; 
Parfitt, G.D., (1967) Principles of the colloidal state, , London: Royal Institute of Chemistry; 
Hench, L.L., Biomaterials: A forecast for the future (1998) Biomaterials, 19, pp. 1419-1423; 
Radin, S., Ducheyne, P., Falaize, S., Hammond, A., In vitro transformation of bioactive glass granules into Ca-P shells (2000) J Biomed Mater Res, 49, pp. 264-272; 
Amaral, M., Lopes, M.A., Silva, R.F., Santos, J.D., Densification route and mechanical properties of Si3N4-bioglass biocomposites (2002) Biomaterials, 23, pp. 857-862; 
Santos, J.D., Amaral, M., Oliveira, S.M., Lopes, M.A., Silva, R.F., Silicon nitride-bioglass {\textregistered} composite for biomedical applications (2001) Key Eng Mater, 192-195, pp. 589-592; 
Krajewski, A., Piancastelli, A., Malavolti, R., Albumin adhesion on ceramics and correlation with their Z-potential (1998) Biomaterials, 19, pp. 637-641; 
Kokubo, T., Kushitani, H., Ohtsuki, C., Sakka, S., Chemical reaction of bioactive glass and glass-ceramics with a simulated body fluid (1992) J Mater Sci: Mater Med, 3, pp. 79-83; 
Vogler, E.A., Interfacial chemistry in biomaterials science (1993) Wettability, surfactant science series, 49, pp. 183-250. , Berg J.C., editor, Chapter 4; 
Lopes, M.A., Monteiro, F.J., Santos, J.D., Serro, A.P., Saramago, B., Hydrophobicity, surface tension, and zeta potential measurements of glass-reinforced hydroxyapatite composites (1999) J Biomed Mater Res, 45, pp. 370-375; 
Ferraz, M.P., Monteiro, F.J., Serro, A.P., Saramago, B., Gibson, I.R., Santos, J.D., Effect of chemical composition on hydrophobicity and zeta potential of plasma sprayed HA/CaO-P 2O 5 glass coatings (2001) Biomaterials, 22, pp. 3105-3112; 
Agathopoulos, S., Nikolopoulos, P., Wettability and interfacial interactions in bioceramic-body-liquid systems (1995) J Biomed Mater Res, 29, pp. 421-429; 
Agathopoulos, S., Nikolopoulos, P., Determination of the energy of the interactions between oxides and biological liquids (1995) Fourth Euro ceramics, 8, pp. 319-324. , A. Ravaglioli; 
Wang, L., Sigmund, W., Aldinger, F., Systematic approach for dispersion of silicon nitride powder in organic media: I, surface chemistry of the powder (2000) J Am Ceram Soc, 4, pp. 691-696; 
Galassi, C., Bertoni, F., Water-based Si 3N 4 suspensions: Part I effect of processing routes on the surface chemistry and particle interactions (2000) J Mater Res, 1, pp. 155-163; 
Haynes, C.A., Norde, W., Globular proteins at solid/liquid interfaces (1994) Colloids Surf B: Biointerfaces, 2, pp. 517-566
},
	month = {2002///},
	pages = {4123 - 4129},
	abstract = {Wettability and surface charge studies were performed on a novel Si                        3N
                        4-30wt\% bioglass biocomposite. Contact angle and surface tension variation with time were determined at 25{\textdegree}C, respectively, by the sessile and pendant drop techniques, for distinct testing liquids: water, diiodomethane, simulated body fluid (SBF) and bovine serum albumin (BSA) dissolved in SBF solution. This biocomposite revealed a hydrophilic character (θ=26.6{\textpm}2.0{\textdegree}) and a surface tension value (66.6mJm
},
	keywords = {3N, 4-bioglass composites, Adsorption, aqueous solution, article, Biocomposites, Biomaterials, body fluid, Body fluids, Bovinae, bovine serum albumin, cation, Cattle, ceramics, chemistry, conformation, Conformations, Contact angle, electrochemistry, enthalpy, entropy, glass, Glass ceramics, Hydrogen-Ion Concentration, hydrophilicity, liquid, methyl iodide, methylene iodide, pH, Physiological models, priority journal, Serum Albumin, Serum Albumin, Bovine, Si, Silicon compounds, silicon derivative, Silicon nitride, simulation, Support, Non-U.S. Gov{\textquoteright}t, Surface charge, Surface chemistry, Surface Properties, surface property, Surface tension, temperature, time, unclassified drug, Water, wettability, Wetting, Zeta potential},
	isbn = {01429612 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0035988674\&partnerID=40\&md5=25e46c5fc9e81d6c3655190ab01b33ea},
	author = {Amaral, M. and Lopes, M.A. and Santos, J.D. and Silva, R.F.}
}
@article {2549,
	title = {Silicon nitride - bioglass composite for biomedical applications},
	journal = {Key Engineering MaterialsKey Eng Mat},
	volume = {192-195},
	year = {2001},
	note = {Conference code: 57760Cited By (since 1996): 5Export Date: 21 November 2012Source: ScopusCODEN: KEMAELanguage of Original Document: EnglishCorrespondence Address: Santos, J.D.; Universidade do Porto, Porto, PortugalReferences: Hench, L.L., Wilson, J., (1993) An Introduction to Bioceramics;(1995) Engineering Materials Handbook, Ceramics and Glasses, Asm International, 4, pp. 812-820; 
Fishman, G., Clare, A., Hench, L.L., (1995) Materials and Applications, 48; 
Niihara, K., Morena, R., Hasselman, D.P., (1982) J. Mater. Sci., 1, pp. 13-16; 
Hench, L.L., (1998) Bioceramics, J. Am. Ceram. Soc., 81 (7), pp. 1705-1728; 
Landis, W.J., Martin, J.R., (1984) J. Vac. Sci. Technol., A2, p. 1108
},
	month = {2001///},
	pages = {589 - 592},
	publisher = {Trans Tech Publ},
	address = {Bologna, Italy},
	abstract = {This study aimed at preparing novel highly toughened bioactive ceramic composite composed of Si                        3N
                        4 matrix and Bioglass using a hot pressing technique. Densification rate, hardness and fracture toughness of this novel composite were assessed as well as in vitro bioactivity using a simulated body fluid (SBF). A fracture toughness of 5.2{\textpm}0.3 MPa.m.
                        1/2 was achieved for fully densified samples, which complies with K
                        1c value reported for cortical bone. This novel composite, which can be used in high load medical applications, seems to overcome the drawback of low fracture toughness presented by most currently available bioactive ceramics.
},
	keywords = {Bioactive ceramic composite, Bioglass, Biomaterials, Body fluids, Bone, Ceramic matrix composites, cortical bone, Densification, Fracture toughness, Glass ceramics, Hot pressing, Medical applications, Silicon nitride, Simulated body fluid},
	isbn = {10139826 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0035147698\&partnerID=40\&md5=3920a80d3e54d72e2efece615e5d55f3},
	author = {Santos, J.D. and Amaral, M. and Oliveira, S.M. and Lopes, M.A. and Silva, R.F.}
}
