[Corrosion study of anodically and thermically surface-treated osteosynthesis plates].
For the fixation of mandibular fractures, at the Department of Oral Surgery and Dentistry at Semmelweis University, anodically and thermically treated TiO2/Ti osteosynthesis plates are used. The corrosion studies were performed in a generally-applied 3-electrode electrochemical measurement cell, with a calomel electrode as reference electrode, and a Pt net as conducting electrode. The cyclic voltammetric measurements demonstrated that the pore-free surface TiO2 layer forms a highly protective barrier on the surface of Ti. The electrochemical impedance spectrum reflected a decrease in inhomogeneity of the sample because of a decrease in the number of pinholes. Such a change is indicative of passivation. The reported techniques appear to comprise a reliable method of study for an evaluation of the long-term corrosion behaviour of implants.
Suba
Csongor
C
Semmelweis Egyetem, Fogorvostudományi Kar, Szájsebészeti és Fogászati Klinika, Budapest.
Lakatos-Varsányi
Magda
M
Mikó
Annamária
A
Kovács
Lajos
L
Velich
Norbert
N
Kádár
Bence
B
Szabó
György
G
D001860:Bone Plates; D003343:Corrosion; D017097:Electric Impedance; D004566:Electrodes; D006801:Humans; D008337:Mandibular Fractures / Q000601:surgery; D008341:Mandibular Prosthesis; D008422:Materials Testing / Q000379:methods; D016348:Osseointegration; D010084:Oxidation-Reduction; D013057:Spectrum Analysis; D013499:Surface Properties; D013696:Temperature; D014025:Titanium
D014025:Titanium