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Development of biomimetic NiTi alloy: influence of thermo-chemical treatment on the physical, mechanical and biological behavior

Rupérez de Gracia, Elisa ; Manero Planella, José María ; Bravo-González, Luis Alberto ; Espinar-Escalona, Eduardo ; Gil Mur, Francisco Javier

MDPI 2016

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Título:
Development of biomimetic NiTi alloy: influence of thermo-chemical treatment on the physical, mechanical and biological behavior
Autor: Rupérez de Gracia, Elisa ; Manero Planella, José María ; Bravo-González, Luis Alberto ; Espinar-Escalona, Eduardo ; Gil Mur, Francisco Javier
Assuntos: Aleaciones ; Aliatges ; Aliatges de níquel i titani ; Alloys ; Bone tissue ; Dental implants ; Dentistry ; Implantes dentales ; Implants dentals ; Nickel alloys ; Níquel ; Odontologia ; Odontología ; Osteointegració (Odontologia) ; Osteointegración ; Osteointegration ; Teixit ossi ; Tejido óseo ; Titanio ; Titanium alloys
Notas: A bioactive layer, free of nickel, has been performed for its greater acceptability and reliability in clinical applications for NiTi shape memory alloys. In the first step, a safe barrier against Ni release has been produced on the surface by means of a thicker rutile/anastase protective layer free of nickel. In the second step, a sodium alkaline titanate hydrogel, which has the ability to induce apatite formation, has been performed from oxidized surface. An improvement of host tissue–implant integration has been achieved in terms of Ni ions release and the bioactivity of the treated NiTi alloys has been corroborated with both in vitro and in vivo studies. The transformation temperatures (As, Af, Ms, and Mf), as well as the critical stresses (σβ⇔M), have been slightly changed due to this surface modification. Consequently, this fact must be taken into account in order to design new surface modification on NiTi implants.
Editor: MDPI
Data de criação/publicação: 2016
Idioma: Inglês

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Development of biomimetic NiTi alloy: influence of thermo-chemical treatment on the physical, mechanical and biological behavior

Rupérez de Gracia, Elisa ; Manero Planella, José María ; Bravo-González, Luis Alberto ; Espinar-Escalona, Eduardo ; Gil Mur, Francisco Javier

MDPI 2016

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