Development of biomimetic NiTi alloy: influence of thermo-chemical treatment on the physical, mechanical and biological behavior
Author
Rupérez de Gracia, Elisa
Manero Planella, José María
Bravo-González, Luis Alberto
Espinar-Escalona, Eduardo
Gil Mur, Francisco Javier
Publication date
2016ISSN
1996-1944
Abstract
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.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
617 - Surgery. Orthopaedics. Ophthalmology
Keywords
Aliatges
Aliatges de níquel i titani
Odontologia
Implants dentals
Teixit ossi
Osteointegració (Odontologia)
Aleaciones
Aleaciones -- Níquel
Aleaciones -- Titanio
Odontología
Implantes dentales
Tejido óseo
Osteointegración
Alloys
Nickel alloys
Titanium alloys
Dentistry
Dental implants
Bone tissue
Osteointegration
Pages
11
Publisher
MDPI
Collection
9;6
Is part of
Materials
Citation
Rupérez, Elisa; Manero, José María; Bravo-González, Luis-Alberto [et al.]. Development of biomimetic NiTi alloy: influence of thermo-chemical treatment on the physical, mechanical and biological behavior. Materials, 2016, 9, 402. Disponible en: <https://www.mdpi.com/1996-1944/9/6/402>. Fecha de acceso: 10 may. 2021. DOI: 10.3390/ma9060402
Grant agreement number
info:eu-repo/grantAgreement/ES/1PE/MAT2015-67183-R
This item appears in the following Collection(s)
- Ciències de la Salut [712]
Rights
© 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/