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Corrosion Resistance of Titanium in Dentistry Applications


Authors: T. Hora;  L. Joska;  E. Gojišová
Authors‘ workplace: Stomatologická klinika 3. LF UK, Praha přednostka doc. MUDr. E. Gojišová ;  Ústav kovových materiálů a korozního inženýrství ;  Vysoká škola chemicko-technologická, Praha vedoucí prof. Ing. P. Novák, CSc. ;  Ústav biofyziky a informatiky 1. LF UK, Praha vedoucí doc. Ing. M. Špunda, CSc.
Published in: Česká stomatologie / Praktické zubní lékařství, ročník 105, 2005, 1, s. 20-25

Overview

Titanium and its alloys is used in dentistry for excellent mechanical and the physical characteristics with high corrosion resistance and it seem to be one of the most appropriate materials for dental use at all. On the contrary to precious alloys, its suitable corrosion quality is gained throughout the process of passivation, i.e. formation of thin oxide layer on the surface, separating titanium from surrounding environment. At the same time, this fact represents general risk of corrosion damage in the locations of breakdown of passive layer, so local forms of corrosion cannot be excluded under unfavorable conditions. Another well-known characteristic is instability of the passive layer in the presence of fluorides. This article summarizes the set of works dedicated to the local forms of corrosion.

Key words:
titanium – passivation – corrosion – local forms of corrosion – ion release – free corrosion potential – potentiodynamic test – polarization resistance – fluorides


Labels
Maxillofacial surgery Orthodontics Dental medicine
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