



@article {2574,
	title = {CaO-P                    2O
                    5 glass hydroxyapatite double-layer plasma-sprayed coating: In vitro bioactivity evaluation
},
	journal = {Journal of Biomedical Materials ResearchJ. Biomed. Mater. Res.},
	volume = {45},
	year = {1999},
	note = {Cited By (since 1996): 31Export Date: 21 November 2012Source: ScopusCODEN: JBMRBdoi: 10.1002/(SICI)1097-4636(19990615)45:4<376::AID-JBM13>3.0.CO;2-SLanguage of Original Document: EnglishCorrespondence Address: Santos, J.D.; Departamento Engenharia Metalurgica, FEUP, Universidade do Porto, R. dos Bragas, 4099 Porto Codex, PortugalChemicals/CAS: Alloys; Calcium, 7440-70-2; CaO-SiO2-P2O5-CaF2 glass; Coated Materials, Biocompatible; Durapatite, 1306-06-5; Phosphates; Powders; Resin Cements; Solutions; titanium alloy (TiAl6V4), 12743-70-3; Titanium, 7440-32-6References: Denissen, H., Mangano, C., Venini, G., (1985) Hydroxylapatite Implants., , Padua: Piccin Nuova Libraria, S.P.A;Van Raemdonck, W., Ducheyne, P., De Meester, P., Calcium phosphate ceramics (1984) Metal and Ceramic Biomaterials, pp. 143-166. , Ducheyne P, Hastings GW, editors, Boca Raton, FL: CRC Press; 
Legeros, R.Z., Incorporation of magnesium in synthetic and biological apatites (1994) Tooth Enamel IV., pp. 32-36. , Fearnead RW, editor. Amsterdam: Elsevier Science; 
Jha, L.J., Best, S.M., Knowles, J.C., Rehman, I., Santos, J.D., Bonfield, W., Preparation and characterization of fluoride-substituted apatites (1997) J Mater Sci Mater Med, 8, pp. 185-191; 
Geesink, R.G.T., Degroot, K., Chemical implant fixation using hydroxyl-apatite coatings (1987) Clin Orthop, 2, pp. 147-170; 
Radin, S., Ducheyne, P., The effect of plasma sprayed induced changes in the characteristics on the in vitro stability of calcium phosphate ceramics (1990) Transactions of the 16th Annual Meeting of the Society for Biomaterials XIII, pp. 128-130; 
Cook, S.D., Thomas, K.A., Hydroxyapatite coated porous titanium for use as an orthopaedic biologic attachment (1989) Clin Orthop, 230, pp. 303-312; 
McPherson, R., Gane, N., Bastow, T.J., Structural characterization of plasma-sprayed hydroxylapatite coatings (1995) J Mater Sci Mater Med, 6, pp. 327-334; 
De Groot, K., Geesink, R., Klein, C.P.A.T., Serekian, P., Plasma sprayed coatings of hydroxylapatite (1987) J Biomed Mater Res, 21, pp. 1375-1381; 
Ravagliolli, A., Krajewszki, A., Laudadio, P., Presutti, L., Cunsolo, E., Martinetti, R., About ceramics for stapedial prostheses and the ossicular chain (1992) Fifth International Symposium on Ceramics in Medicine-Bioceramics 5, pp. 451-458. , Yamamuro T, Kokubo T, Nakamura T, editors. Kyoto: Kobunshi Kankokai; 
Hastings, G.W., Daily, D., Hydroxyapatite coatings (1989) First International Symposium on Ceramics in Medicine-Bioceramics 1, pp. 355-358. , Oonishi H, Aoki H, Sawai K, editors. Tokyo: Ishiyaku EuroAmerica; 
Aoki, H., Medical applications of hydroxyapatite (1991) Science and Medical Applications of Hydroxyaptite, pp. 175-192. , Aoki H, Sawai K, editors. Tokyo: Takyama Press System Centre; 
Rey, C., Calcium phosphate biomaterials and bone mineral: Differences in composition, structures and properties (1990) Biomaterials, 11, pp. 13-15; 
Evans, G., Behiri, J., Currey J, B.W., Microhardness and young{\textquoteright}s modulus in cortical bone exhibiting a wide range of mineral volume fractions, and in a bone analogue (1990) J Mater Sci Mater Med, 1, pp. 38-43; 
Rey, C., Froche, M., Heughebaert, M., Heughebaert, J.C., Lacout, J.L., Vignoles, M., Apatite chemistry in biomaterial preparation, shaping and biological behaviour (1991) Fourth International Symposium on Ceramics in Medicine-Bioceramics 4, pp. 57-60. , Bonfield W, Hastings GW, Tanner KE, editors. London: Butterworth-Heinemann; 
Knowles, J.C., Talal, S., Santos, J.D., Sintering effects in a glass reinforced hydroxyapatite (1996) Biomaterials, 17, pp. 1437-1442; 
Kokubo, T., Hayashi, T., Sakka, S., Kitsugi, T., Yamamuro, T., Takagi, M., Shibuya, T., Surface structure of a load bearable bioactive glass-ceramic A-W (1981) High Tech Ceramics, pp. 175-184. , Vicenzini P, editor. Amsterdam: Elsevier Science Publisher BV; 
Hench, L., Anderson, O.H., LaTorre, G.P., The kinetics of bioactive ceramics. Part III: Surface reactions for bioactive glasses compared with inactive glass (1991) Fourth International Symposium on Ceramics in Medicine-Bioceramics 4, , Bonfield W, Hastings GW, Tanner KE, editors. London: Butterworth-Heinemann; 155-162; 
Daculsi, G., LeGeros, R.Z., Heughebart, M., Barbieux, I., Formation of a carbonate apatite crystals after implantation of calcium phosphate ceramics (1990) Calcif Tissue Int, 46, pp. 20-27; 
Kokubo, T., Ito, S., Huang, Z.T., Hayashi, T., Sakka, S., Kitsugi, T., Yamamuro, T., Ca-P rich layer formed on high strength bioactive glass-ceramic A-W (1990) J Biomed Mater Res, 24, pp. 331-343; 
Ducheyne, P., Radin, S., Ishikawa, K., Kim, C.S., Dissolution and precipitation of calcium phosphate phases on biomaterials correlates with in vivo bioactivity (1991) Fourth International Symposium on Ceramics in Medicine-Bioceramics 4, pp. 135-144. , Bonfield W, Hastings GW, Tanner KE, editors. London: Butterworth-Heinemann; 
Rey, C., Hina, A., Amrah-Bouali, S., Ranz, X., Surface reactions of calcium-phosphate bioceramics, comparison with bone mineral surface chemistry (1995) Fourth Euro Ceramics., 8, pp. 301-312. , Ravaglioli A, editor. Faenza: Gruppo Editoriale Faenza Editrice; 
Van Blitterswijk, C.A., Grote, J.J., Kuypers, W., Blok-Van Hoek, C.J.G., Daems, W.T., Bioreactions at the tissue/hydroxyapatite interface (1985) Biomaterials, 6, pp. 243-251; 
Ducheyne, P., Bioceramics: Material characteristics versus in vivo behavior (1987) J Biomed Mater Res, 21, pp. 219-236; 
Hyakuna, K., Yamamuro, T., Kotoura, Y., Oka, M., Nakamura, T., Kitsogi, T., Kokubo, T., Kushitani, H., Surface reactions of calcium phosphate ceramics to various solutions (1990) J Biomed Mater Res, 24, pp. 471-488; 
Santos, J.D., Reis, R.L., Monteiro, F.J., Knowles, J.C., Hastings, G.W., Liquid phase sintering of hydroxyapatite by phosphate and silicate glass additions: Structure and properties of the composites (1995) J Mater Sci Mater Med, 6, pp. 348-352; 
Tanahashi, M., Yao, T., Kokubo, T., Minoda, M., Miyamoto, T., Nakamura, T., Yamamuro, T., Apatite coated on organic polymers by biomimetic process: Improvement in adhesion to substrate by HC1 treatment (1995) J Mater Sci Mater Med, 6, pp. 319-326; 
Neo, M., Nakamura, T., Yamamuro, T., Ohtsuki, C., Kokubo, T., Bando, Y., A comparative study of ultrastructures of the interfaces between four kinds of surface-active ceramic and bone (1992) J Biomed Mater Res, 26, pp. 1419-1432; 
Li, P., Ohtsuki, C., Kokubo, T., Nakanishi, K., Soga, N., Nakamura, T., Yamamuro, T., Process of formation of bone-like apatite layer on silica gel (1993) J Mater Sci Mater Med, 4, pp. 127-131; 
Santos, J.D., Jha, L.J., Monteiro, F.J., Surface modifications of glass-reinforced hydroxyapatite composites (1995) Biomaterials, 16, pp. 521-526; 
Neo, M., Kotani, S., Fujita, Y., Yamamuro, T., Bando, Y., Ohtsuki, C., Kokubo, T., Differences in ceramic-bone interface between surface-active ceramics and resorbable ceramics: A study by scanning and transmission electron microscope (1992) J Biomed Mater Res, 26, pp. 255-267; 
Li, P., Yang, Q., Zhang, F., Kokubo, T., The effect of residual glassy phase in a bioactive glass-ceramic on the formation of its surface apatite layer in vitro (1992) J Mater Sci Mater Med, 3, pp. 452-456; 
Kotani, S., Fujita, Y., Kitsugi, T., Nakamura, T., Yamamuro, T., Bone bonding mechanism of β-tricalcium phosphate (1991) J Biomed Mater Res, 25, pp. 1303-1315; 
Daculsi, G., LeGeros Rz, H.M., Barbieux, I., Formation of carbonate-apatite crystals after implantation of calcium phosphate ceramics (1990) Calcif Tissue Int, 46, pp. 20-27; 
Silva, P.L., Monteiro, F.J., Santos, J.D., Knowles, J.C., Adhesion and microstructural characterisation of plasma sprayed hydroxyapatite-glass ceramic coatings onto Ti-6Al-4V substrates (1998) Surf Coatings Technol, 102, pp. 191-196; 
Kokubo, T., Kushitani, H., Ohtsuki, C., Sakka, S., Yamamuro, T., Chemical reaction of bioactive glass and glass-ceramics with a simulated body fluid (1992) J Biomed Mater Res, 3, pp. 79-83; 
Blakeslee, D.M., Dal-Favero, M.E., (1997) NIST X-ray Photoelectron Spectroscopy Database, , Gaitherburg, MD: National Institute of Standards and Technology; 
Anderson, O.H., Kangasniemi, I., Calcium phosphate formation at the surface of bioactive glass in vitro (1991) J Biomed Mater Res, 25, pp. 1019-1030; 
Santos, J.D., Jha, L.J., Monteiro, F.J., In vitro calcium phosphate formation on SiO 2-Na 2O-CaO-P 2O 5 glass reinforced hydroxyapatite composite: A study by XPS analysis (1996) J Mater Sci Mater Med, 7, pp. 181-185; 
Verhoeven, J.A.T., Van Doveren, H., An XPS investigation of the interface of methane, ethyne, ethene and ethane with barium surface (1982) Surf Sci, 123, pp. 369-383
},
	month = {1999///},
	pages = {376 - 383},
	publisher = {John Wiley \& Sons Inc},
	abstract = {Double-layer composite coatings composed of a P                        2O
                        5-based glass/Ca
                        10(PO
                        4)
                        6(OH)
                        2 (HA) mixture top layer and a simple HA underlayer, on Ti-6AI-4V substrates, were prepared using a plasma-spraying technique. The in vitro bioactivity of these coatings was assessed by immersion testing in simulated body fluid. Both scanning electron microscopy (SEM) analysis and the ionic solution changes followed by atomic absorption spectroscopy and the molybdenum blue method demonstrated that these composite coatings induce a faster surface Ca-P layer formation than the simple HA coatings used as a control. X-ray photoelectron spectroscopy (XPS) analysis demonstrated that the Ca-P layer formed was apatite. The combination of SEM and XPS analyses showed that the apatite layer was a calcium-deficient hydroxyapatite with a Ca/P ranging from 1.3 to 1.4 with CO
                        3
                        2- groups contained in the structure.
Double-layer composite coatings composed of a P
                        2O
                        5-based glass/Ca
                        10(PO
                        4)
                        6(OH)
                        2 (HA) mixture top layer and a simple HA underlayer, on Ti-6AI-4V substrates, were prepared using a plasma-spraying technique. The in vitro bioactivity of these coatings was assessed by immersion testing in simulated body fluid. Both scanning electron microscopy (SEM) analysis and the ionic solution changes followed by atomic absorption spectroscopy and the molybdenum blue method demonstrated that these composite coatings induce a faster surface Ca-P layer formation than the simple HA coatings used as a control. X-ray photoelectron spectroscopy (XPS) analysis demonstrated that the Ca-P layer formed was apatite. The combination of SEM and XPS analyses showed that the apatite layer was a calcium-deficient hydroxyapatite with a Ca/P ranging from 1.3 to 1.4 with CO
                        3
                        2- groups contained in the structure.
},
	keywords = {alloy, Alloys, Apatite, article, Atomic absorption spectroscopy, Atomic spectroscopy, Bioactivity, Biocompatibility, biomaterial, Biomaterials, Biomedical engineering, Body fluids, Calcium, Calcium Compounds, CaO SiO2 P2O5 CaF2 glass, CaO-SiO2-P2O5-CaF2 glass, Chemical analysis, chemical composition, Coated Materials, Biocompatible, Double layer coatings, Double-layer coatings, Durapatite, film, glass, Glass plasma spraying, human, Humans, hydroxyapatite, immersion, implant, in vitro study, Ionic solution changes, Magnesium, materials testing, Molybdenum blue, Multilayers, Particle Size, phosphate, Phosphate minerals, Phosphates, Phosphorus Compounds, phosphorus pentoxide, Plasma spraying, potassium, powder, Powders, resin cement, Resin Cements, Scanning electron microscopy, Sodium, solution and solubility, Solutions, structure analysis, Substrates, Surface Properties, surface property, thickness, Tissue, Titanium, titanium alloy (TiAl6V4), Titanium alloys, X ray photoelectron spectroscopy},
	isbn = {00219304 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0033563315\&partnerID=40\&md5=8c0de1e25709302641b203efac50337b},
	author = {Ferraz, M.P. and Monteiro, F.J. and Santos, J.D.}
}
