Thin hydroxyapatite coating produced by the ion beam dynamic mixing method

Yoshinari, Masao; Ohtsuka, Yoshiro; Dérand, Tore

doi:10.1016/0142-9612(94)90019-1

Cited by 180 publications

(68 citation statements)

References 20 publications

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“…The formers are for example plasma spray method, ion plating [54], RF magnetron sputtering [55], pulse laser deposition method [56,57], ion beam dynamic mixing method [58], super plastic joining method [59], etc. where HAP are formed directly on titanium alloy surface.…”

Section: Bioactive Surface Modification Of Titanium Alloys For Biomedmentioning

confidence: 99%

Recent research and development in titanium alloys for biomedical applications and healthcare goods

Niinomi

2003

Science and Technology of Advanced Materials

847

351

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Nb, Ta and Zr are the favorable non-toxic alloying elements for titanium alloys for biomedical applications. Low rigidity titanium alloys composed of non-toxic elements are getting much attention. The advantage of low rigidity titanium alloy for the healing of bone fracture and the remodeling of bone is successfully proved by fracture model made in tibia of rabbit. Ni-free super elastic and shape memory titanium alloys for biomedical applications are energetically developed. Titanium alloys for not only implants, but also dental products like crowns, dentures, etc. are also getting much attention in dentistry. Development of investment materials suitable for titanium alloys with high melting point is desired in dental precision castings. Bioactive surface modifications of titanium alloys for biomedical applications are very important for achieving further developed biocompatibility. Low cost titanium alloys for healthcare goods, like general wheel chairs, etc. has been recently proposed. q

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Section: Bioactive Surface Modification Of Titanium Alloys For Biomedmentioning

confidence: 99%

Recent research and development in titanium alloys for biomedical applications and healthcare goods

Niinomi

2003

Science and Technology of Advanced Materials

847

351

View full text Add to dashboard Cite

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“…5). 18) This method is a combination of ion implantation and PVD and has the advantages of a high deposition rate, producing defect-free transparent thin films, and excellent adhesion compared to conventional thin-film deposition techniques. Figure 6 shows a commercially available Brånemark implant and a Ca-P coated implant.…”

Section: Surface Modifications Of Titanium With a Thin Cal-mentioning

confidence: 99%

Bio-Functionalization of Titanium Surfaces for Dental Implants

Yoshinari¹,

Matsuzaka

Inoue

et al. 2002

Mater. Trans.

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Since dental implants are used in contact with many different tissues, it is necessary to have optimum surface compatibility with the host bone tissues and soft tissues. Furthermore, dental implant surfaces exposed to the oral cavity must remain plaque-free. Such materials can be created under well-controlled conditions by modifying the surfaces of metals that contact those tissues. "Tissue-compatible implants," which are compatible with all host tissues, must integrate with bone tissue, easily form hemidesmosomes, and prevent bacterial adhesion. This research was aimed at developing such tissue-compatible implants by modifying titanium surfaces using a dry process for closely adhering to the titanium substrate and ensuring good wear resistance. The process includes ion beam dynamic mixing (thin calcium phosphates), ion implantation, titania spraying, ion plating and ion beam mixing. At the bone tissue/implant interface, a thin calcium phosphate coating and rapid heating with infrared radiation was effective in controlling the dissolution without cracking the coating. This thin calcium phosphate coating may directly promote osteogenisis, but also enable immobilization of functional proteins or drugs such as bisphosphonate for dug delivery system. At the oral fluid/implant interface, an alumina coating and F + -implantation were responsible for inhibiting the adhesion of microbial plaque. In conclusion, dry-process surface modification is useful in controlling the physicochemical nature of surfaces, including the surface energy and the surface electrical charge, and in developing tissue-compatible implants.

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“…The dissolution rate of crystalline HA has been observed to be very low, while that of the amorphous phase HA is considerably high [1]. Various techniques have been used to deposit calcium phosphate on metal substrates such as sputtering, electron beam deposition, laser deposition, and plasma spraying [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. So far, plasma spraying is the only technique being commercialized and most widely used because of its simplicity and cost effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Processing and Development of Nano-Scale HA coatings for Biomedical Application

Rabiei

Thomas

2004

MRS Proc.

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Functionally graded Hydroxyapatite coating with graded Crystallinity across the thickness of the film has been processed and tested as a more effective orthopedic/ dental implant coating. The present study aims to increase the service-life of an orthopedic/ dental implant by creating materials that form a strong, long lasting, bond with the Ti substrate as well as juxtaposed bone. The health relatedness of the new material is to increase bonding between an implant and juxtaposed bone so that a patient who has received joint or dental replacement surgery may quickly return to a normal active lifestyle. Cross-sectional transmission electron microscopy analysis displayed that the films have a graded crystal structure with the crystalline layer near the substrate and the amorphous layer at the top surface. Compositional analysis was performed using SEM-EDX at the top surface as well as STEM-EDX at the cross section of the film. The average calcium to phosphorous ratio at the surface is 1.46, obtained by SEM-EDX, The Ca/P ratios in the crystalline and amorphous layers of the film are 1.6 to 1.7, close to the ratio of 1.67 for HA. INTRODUCTIONIn order to improve the bioactivity of metal implants, Hydroxyapatite (HA: CaJ0(P0 4 )

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Thin hydroxyapatite coating produced by the ion beam dynamic mixing method

Cited by 180 publications

References 20 publications

Recent research and development in titanium alloys for biomedical applications and healthcare goods

Recent research and development in titanium alloys for biomedical applications and healthcare goods

Bio-Functionalization of Titanium Surfaces for Dental Implants

Processing and Development of Nano-Scale HA coatings for Biomedical Application

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