Thin films of calcium phosphate and titanium dioxide by a sol-gel route: a new method for coating medical implants
Titanium is a commonly used biomaterial for dental and orthopaedic applications. To increase its ability to bond with bone, some attempts were made to coat its surface with calcium phosphate (CaP). This paper describes a new type of coating. Instead of a pure CaP layer, a mixing of titanium dioxide...
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| Veröffentlicht in: | Journal of materials science. Materials in medicine 1999-03, Vol.10 (3), p.161-167 |
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| creator | Piveteau, L D Girona, M I Schlapbach, L Barboux, P Boilot, J P Gasser, B |
| description | Titanium is a commonly used biomaterial for dental and orthopaedic applications. To increase its ability to bond with bone, some attempts were made to coat its surface with calcium phosphate (CaP). This paper describes a new type of coating. Instead of a pure CaP layer, a mixing of titanium dioxide (TIO2) and CaP is fabricated and deposited as a coating. These layers are deposited by a sol-gel route on pure titanium substrates using various pre-treatments. The method consists of mixing a solution of tetrabutyl ortho-titanate or a sol of titanium dioxide with a solution of calcium nitrate and phosphorous esters. This composite is deposited on to commercially pure titanium plates, mechanically polished or blasted with pure crystalline aluminum oxide, using the spin-coating technique. These coatings are then fired at 650 or 850 degrees C for various times. The samples are characterized by X-ray diffraction for their crystallinity, X-ray photoelectron spectroscopy for their surface chemical composition and scanning electron microscopy for their topography. Samples treated at 850 degrees C present a well-pronounced crystallinity, and a high chemical purity at the surface. The topography is strongly related to the viscosity of the precursor and the substrate pre-treatment. Possibilities to structure the outermost layer are presented. |
| doi_str_mv | 10.1023/A:1008985423644 |
| format | Article |
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To increase its ability to bond with bone, some attempts were made to coat its surface with calcium phosphate (CaP). This paper describes a new type of coating. Instead of a pure CaP layer, a mixing of titanium dioxide (TIO2) and CaP is fabricated and deposited as a coating. These layers are deposited by a sol-gel route on pure titanium substrates using various pre-treatments. The method consists of mixing a solution of tetrabutyl ortho-titanate or a sol of titanium dioxide with a solution of calcium nitrate and phosphorous esters. This composite is deposited on to commercially pure titanium plates, mechanically polished or blasted with pure crystalline aluminum oxide, using the spin-coating technique. These coatings are then fired at 650 or 850 degrees C for various times. The samples are characterized by X-ray diffraction for their crystallinity, X-ray photoelectron spectroscopy for their surface chemical composition and scanning electron microscopy for their topography. Samples treated at 850 degrees C present a well-pronounced crystallinity, and a high chemical purity at the surface. The topography is strongly related to the viscosity of the precursor and the substrate pre-treatment. Possibilities to structure the outermost layer are presented.</description><identifier>ISSN: 0957-4530</identifier><identifier>EISSN: 1573-4838</identifier><identifier>DOI: 10.1023/A:1008985423644</identifier><identifier>PMID: 15348164</identifier><language>eng</language><publisher>United States: Springer Nature B.V</publisher><subject>Biomedical materials ; Ceramic coatings ; Coating techniques ; Crystal structure ; Materials science ; Phosphate minerals ; Polishing ; Scanning electron microscopy ; Sol-gels ; Surface topography ; Titanium ; Titanium dioxide ; X ray photoelectron spectroscopy ; X-rays</subject><ispartof>Journal of materials science. 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Materials in medicine</title><addtitle>J Mater Sci Mater Med</addtitle><description>Titanium is a commonly used biomaterial for dental and orthopaedic applications. To increase its ability to bond with bone, some attempts were made to coat its surface with calcium phosphate (CaP). This paper describes a new type of coating. Instead of a pure CaP layer, a mixing of titanium dioxide (TIO2) and CaP is fabricated and deposited as a coating. These layers are deposited by a sol-gel route on pure titanium substrates using various pre-treatments. The method consists of mixing a solution of tetrabutyl ortho-titanate or a sol of titanium dioxide with a solution of calcium nitrate and phosphorous esters. This composite is deposited on to commercially pure titanium plates, mechanically polished or blasted with pure crystalline aluminum oxide, using the spin-coating technique. These coatings are then fired at 650 or 850 degrees C for various times. 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Materials in medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Piveteau, L D</au><au>Girona, M I</au><au>Schlapbach, L</au><au>Barboux, P</au><au>Boilot, J P</au><au>Gasser, B</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thin films of calcium phosphate and titanium dioxide by a sol-gel route: a new method for coating medical implants</atitle><jtitle>Journal of materials science. Materials in medicine</jtitle><addtitle>J Mater Sci Mater Med</addtitle><date>1999-03</date><risdate>1999</risdate><volume>10</volume><issue>3</issue><spage>161</spage><epage>167</epage><pages>161-167</pages><issn>0957-4530</issn><eissn>1573-4838</eissn><abstract>Titanium is a commonly used biomaterial for dental and orthopaedic applications. To increase its ability to bond with bone, some attempts were made to coat its surface with calcium phosphate (CaP). This paper describes a new type of coating. Instead of a pure CaP layer, a mixing of titanium dioxide (TIO2) and CaP is fabricated and deposited as a coating. These layers are deposited by a sol-gel route on pure titanium substrates using various pre-treatments. The method consists of mixing a solution of tetrabutyl ortho-titanate or a sol of titanium dioxide with a solution of calcium nitrate and phosphorous esters. This composite is deposited on to commercially pure titanium plates, mechanically polished or blasted with pure crystalline aluminum oxide, using the spin-coating technique. These coatings are then fired at 650 or 850 degrees C for various times. The samples are characterized by X-ray diffraction for their crystallinity, X-ray photoelectron spectroscopy for their surface chemical composition and scanning electron microscopy for their topography. Samples treated at 850 degrees C present a well-pronounced crystallinity, and a high chemical purity at the surface. The topography is strongly related to the viscosity of the precursor and the substrate pre-treatment. Possibilities to structure the outermost layer are presented.</abstract><cop>United States</cop><pub>Springer Nature B.V</pub><pmid>15348164</pmid><doi>10.1023/A:1008985423644</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of materials science. Materials in medicine, 1999-03, Vol.10 (3), p.161-167 |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Biomedical materials Ceramic coatings Coating techniques Crystal structure Materials science Phosphate minerals Polishing Scanning electron microscopy Sol-gels Surface topography Titanium Titanium dioxide X ray photoelectron spectroscopy X-rays |
| title | Thin films of calcium phosphate and titanium dioxide by a sol-gel route: a new method for coating medical implants |
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