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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of negatively and positively charged Ti metal surfaces on ceramic coating adhesion and cell response

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Author(s):
do Nascimento, Rodney Marcelo ; de Carvalho, Vanessa Rafaela ; Govone, Jose Silvio ; Hernandes, Antonio Carlos ; da Cruz, Nilson Cristino
Total Authors: 5
Document type: Journal article
Source: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE; v. 28, n. 2 FEB 2017.
Web of Science Citations: 5
Abstract

This manuscript reports an evaluation of the effects of simple chemical-heat treatments on the deposition of different ceramic coatings, i.e., TiO2, CaTiO3 and CaP, on commercially pure titanium (cp-Ti) and Ti6Al4V and the influence of the coatings on cells interaction with the surfaces. The ceramic materials were prepared by the sol-gel method and the coating adhesion was analyzed by pull-off bending tests. The wettability of positively or negatively charged surfaces was characterized by contact angle measurements, which also enabled the calculation of the surface free energy through the polar-apolar liquids approach. Both acid and alkaline treatments activated the cp-Ti, whereas Ti6Al4V was only activated by the alkaline treatment. Such treatment led to increased hydrophilicity with inhibition of the fibroblastic response on Ti6Al4V. On the other hand, osteoblastic cells adhered to and proliferated on the positively and negatively charged surfaces. The maximum adhesion strength (similar to 3400N) was obtained with a negative Ti6Al4V-CaTiO3-CaP multilayer surface. (AU)

FAPESP's process: 13/21970-8 - Development of biomaterial from the incorporation of calcium phosphates in latex structures to order application as controlled release device
Grantee:Rodney Marcelo do Nascimento
Support Opportunities: Scholarships in Brazil - Post-Doctoral