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Examination of the properties of Ti-6Al-4V based plates after oral and maxillofacial applications

A. B. HAZAR-YORUÇ1,* , O. GÜLAY1, B. C. ŞENER2

Affiliation

  1. Yıldız Technical University, Chemistry-Metallurgy Faculty, Bioengineering Department, 34210 İstanbul, Turkey
  2. Marmara University, Faculty of Dentistry, Division of Oral and Maxillofacial Surgery, 34365 İstanbul, Turkey

Abstract

The objectives of this study were to investigate corrosion potential and alterations of mechanical features of Ti6Al4V plates after the short-term clinical use. The specimens were examined by imaging microscope, SEM and EDX, stereomicroscope, mechanical and chemical analysis methods. The results of the image analysis showed the presence of topographic alterations on the surfaces. Stereomicroscope examination demonstrated surface damages as surface cracks which occured during handling and application of the material. SEM and EDX results revealed that Ti-6Al-4V plates undergo local erosion due to biological interactions. A noticible decrease in microhardness, tensile strength, fatigue limit and failure values of removed plates was observed. Additionally, serum samples were chemically analysed and determined the concentrations of Ti, Al and V. In conclusion, the experimental results indicated that Ti-6Al-4V based plates have unsufficient corrosion resistance even after short-term clinical usage and they strongly emphasize that removed plates undergo corrosion and their mechanical properties weaken during their clinical function..

Keywords

Ti6Al4V plates, Surface structure, Mechanical and chemical analysis, Corrosion.

Submitted at: March 23, 2007
Accepted at: Nov. 16, 2007

Citation

A. B. HAZAR-YORUÇ, O. GÜLAY, B. C. ŞENER, Examination of the properties of Ti-6Al-4V based plates after oral and maxillofacial applications, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 11, pp. 3389-3395 (2007)