Properties and Performance of Ultrafine Grained Titanium for Biomedical Applications

Abstract

The use of materials for biomedical applications has become vital to enhance the quality of life and longevity of human beings. Commercially pure titanium (cpTi) and titanium alloys are the most adequate materials for some biomedical applications, but cpTi and the Ti-6Al-4V alloy (Ti G5) have limitations for biomedical application due to low mechanical strength and the possibility of ion release, respectively. In order to address this problem, commercially pure ultrafine grained titanium (UFG Ti) obtained by severe plastic deformation (SPD) has been suggested as a promising alternative for biomedical applications. This thermomechanical process is able to improve the strength of cpTi and titanium alloys while keeping their excellent biocompatibility. The purpose of this review was to compare the mechanical strength of UFG Ti, cpTi and a Ti G5 alloy. In addition, the biological performance of UFG Ti was also evaluated by in vivo testing. Prodigious improvements were seen in surface topography, wettability and in homogeneity of oxide layer. The overall improvements in microstructure provided by ECAP technique coupled with surface etching resulted in a remarkable performance of cpTi alloy for biomedical applications.

Titanium Biomimetically Coated With Hydroxyapatite, Silver Nitrate and Polycaprolactone, for Use In Biomaterials (Biomedicine)

“…With this motivation, the search for new technologies that aim to improve and optimize products and processes is becoming progressively constant. The search for materials that allow the substitution of tissue and bones has increased significantly in the last few years [1][2][3][4] .…”

“…The search for functional materials has increased significantly in the last few years, and commercially pure titanium (C.P. Ti) and its alloys have broad application in this area because of their high degree of resistance to corrosion in bodily fluids, as well as their low modulus of elasticity and characteristics as biocompatible materials 4,[7][8][9] .…”

Comparative study of compressive and fatigue strength of dental implants made of nanocrystalline Ti Hard and microcrystalline Ti G4

“…Normally, the new implant has to be larger than the previous one, and in some cases the thickness of the jaw bone has insufficient for the insertion of an implant with a larger diameter . This situation highlights the importance of studies focused on predicting implant life and on the possible causes of failure . These were the objectives of this study and other works …”

“…17,24 This situation highlights the importance of studies focused on predicting implant life and on the possible causes of failure. 25 These were the objectives of this study and other works. 7,21,24 There is a lack of information concerning the vertical forces applied to dental implants during oral function.…”

Análise Da Microdureza E Microestrutura Das Ligas Ti Ultra Fine Grained E Ti-6al-4v

“…Um dos materiais promissores para substituir a liga Ti-6Al-4V nas aplicações ortopédicas é o Ti-UFG, pois seu tratamento por ECAP permite melhorar as propriedades mecânicas, tais como o aumento da resistência mecânica e da plasticidade. A grande vantagem em utilizar Ti-UFG reside no fato de manter a composição química do Ti cp, que nesse caso é biocompatível e osteoindutor [10].…”