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Article: In vitro and in vivo characterization of novel plasma treated nickel titanium shape memory alloy for orthopedic implantation

TitleIn vitro and in vivo characterization of novel plasma treated nickel titanium shape memory alloy for orthopedic implantation
Authors
KeywordsCell viability
Nickel titanium shape memory alloys
Osteoblasts
Plasma immersion ion implantation
Surface treatment
Issue Date2007
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/surfcoat
Citation
Surface And Coatings Technology, 2007, v. 202 n. 4-7, p. 1247-1251 How to Cite?
AbstractNickel-titanium (NiTi) shape memory alloys are potentially very useful in orthopedic and dental implantation, since the materials possess super-elasticity and shape memory effects that other current medical metallic materials do not have. Possible nickel ion release, however, hampers their medical applications, particularly in orthopedic implants where fretting is always expected at the articulating surface. We have utilized plasma immersion ion implantation (PIII) to alter the surface chemistry of the materials in order to reduce nickel release. The enhanced corrosion resistance and surface mechanical properties have been reported previously. This paper describes the cytocompatibility and in vivo performance of the PIII treated and untreated samples. NiTi discs with 50.8% Ni were treated by nitrogen and oxygen PIII at 40 kV. After PIII, titanium nitride (TiN) and packed titanium oxide (TiO) are formed on the surface. The degree of cell proliferation on the untreated and oxygen treated samples is slightly inferior to that on the nitrogen treated sample. However, in vivo bone formation on the nitrogen plasma treated samples is better compared to the untreated control and oxygen treated one at all time points. Our work thus provides the evidence that nitrogen plasma modified NiTi alloys are potentially suitable for orthopedics without inducing harmful biological effects. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/68304
ISSN
2015 Impact Factor: 2.139
2015 SCImago Journal Rankings: 0.872
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYeung, KWKen_HK
dc.contributor.authorChan, RYLen_HK
dc.contributor.authorLam, KOen_HK
dc.contributor.authorWu, SLen_HK
dc.contributor.authorLiu, XMen_HK
dc.contributor.authorChung, CYen_HK
dc.contributor.authorChu, PKen_HK
dc.contributor.authorLu, WWen_HK
dc.contributor.authorChan, Den_HK
dc.contributor.authorLuk, KDKen_HK
dc.contributor.authorCheung, KMCen_HK
dc.date.accessioned2010-09-06T06:03:19Z-
dc.date.available2010-09-06T06:03:19Z-
dc.date.issued2007en_HK
dc.identifier.citationSurface And Coatings Technology, 2007, v. 202 n. 4-7, p. 1247-1251en_HK
dc.identifier.issn0257-8972en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68304-
dc.description.abstractNickel-titanium (NiTi) shape memory alloys are potentially very useful in orthopedic and dental implantation, since the materials possess super-elasticity and shape memory effects that other current medical metallic materials do not have. Possible nickel ion release, however, hampers their medical applications, particularly in orthopedic implants where fretting is always expected at the articulating surface. We have utilized plasma immersion ion implantation (PIII) to alter the surface chemistry of the materials in order to reduce nickel release. The enhanced corrosion resistance and surface mechanical properties have been reported previously. This paper describes the cytocompatibility and in vivo performance of the PIII treated and untreated samples. NiTi discs with 50.8% Ni were treated by nitrogen and oxygen PIII at 40 kV. After PIII, titanium nitride (TiN) and packed titanium oxide (TiO) are formed on the surface. The degree of cell proliferation on the untreated and oxygen treated samples is slightly inferior to that on the nitrogen treated sample. However, in vivo bone formation on the nitrogen plasma treated samples is better compared to the untreated control and oxygen treated one at all time points. Our work thus provides the evidence that nitrogen plasma modified NiTi alloys are potentially suitable for orthopedics without inducing harmful biological effects. © 2007 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/surfcoaten_HK
dc.relation.ispartofSurface and Coatings Technologyen_HK
dc.subjectCell viabilityen_HK
dc.subjectNickel titanium shape memory alloysen_HK
dc.subjectOsteoblastsen_HK
dc.subjectPlasma immersion ion implantationen_HK
dc.subjectSurface treatmenten_HK
dc.titleIn vitro and in vivo characterization of novel plasma treated nickel titanium shape memory alloy for orthopedic implantationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0257-8972&volume=202&spage=1247&epage=1251&date=2007&atitle=In+vitro+and+in+vivo+characterization+of+novel+plasma+treated+nickel+titanium+shape+memory+alloy+for+orthopedic+implantationen_HK
dc.identifier.emailYeung, KWK:wkkyeung@hkucc.hku.hken_HK
dc.identifier.emailLu, WW:wwlu@hku.hken_HK
dc.identifier.emailChan, D:chand@hkucc.hku.hken_HK
dc.identifier.emailLuk, KDK:hcm21000@hku.hken_HK
dc.identifier.emailCheung, KMC:cheungmc@hku.hken_HK
dc.identifier.authorityYeung, KWK=rp00309en_HK
dc.identifier.authorityLu, WW=rp00411en_HK
dc.identifier.authorityChan, D=rp00540en_HK
dc.identifier.authorityLuk, KDK=rp00333en_HK
dc.identifier.authorityCheung, KMC=rp00387en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.surfcoat.2007.07.093en_HK
dc.identifier.scopuseid_2-s2.0-36048999493en_HK
dc.identifier.hkuros145958en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-36048999493&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume202en_HK
dc.identifier.issue4-7en_HK
dc.identifier.spage1247en_HK
dc.identifier.epage1251en_HK
dc.identifier.isiWOS:000251618900116-
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridYeung, KWK=13309584700en_HK
dc.identifier.scopusauthoridChan, RYL=22978438100en_HK
dc.identifier.scopusauthoridLam, KO=22980533000en_HK
dc.identifier.scopusauthoridWu, SL=15125218800en_HK
dc.identifier.scopusauthoridLiu, XM=8408205200en_HK
dc.identifier.scopusauthoridChung, CY=8100842800en_HK
dc.identifier.scopusauthoridChu, PK=36040705700en_HK
dc.identifier.scopusauthoridLu, WW=7404215221en_HK
dc.identifier.scopusauthoridChan, D=7402216545en_HK
dc.identifier.scopusauthoridLuk, KDK=7201921573en_HK
dc.identifier.scopusauthoridCheung, KMC=7402406754en_HK

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