Potentiodynamic polarisation technique for corrosion testing of Cr-Co and Cr-Ni alloys in artificial saliva and soft drinks

BAYINDIR F., KORKUT Ö., GUNGOR H.

MATERIALS RESEARCH INNOVATIONS, cilt.14, sa.4, ss.280-284, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 4
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1179/143307510x12777574294867
  • Dergi Adı: MATERIALS RESEARCH INNOVATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.280-284
  • Anahtar Kelimeler: Dental alloys, Corrosion, DENTAL CASTING ALLOYS, IN-VITRO, NICKEL-CHROMIUM, METAL RELEASE, BEHAVIOR, AMALGAM, CONTACT, ALLERGY, EROSION, GOLD
  • Atatürk Üniversitesi Adresli: Evet

Özet

The corrosion of alloys used in dentistry affects the biological, functional and esthetic properties of the material. This study compares the corrosion behaviour of Cr-Co and Cr-Ni alloys used in restorative dentistry in four different types of solution (distilled water, orange nectar, cola and artificial saliva). Electrochemical polarisation experiments were performed using a potentiostat and carried out in a corrosion cell containing a solution of 500 mL at body temperature (37 degrees C). It can be seen from experimental results that Cr-Co alloy has lower corrosion current densities than Cr-Ni alloy. When the media effect is observed, corrosion current densities are higher for cola and orange juice, which have lower pH. As a result, Cr-Co alloys seem to be, from the biocompatibility point of view, more convenient in the intraoral use as dental alloys. In conclusion, corrosive potential of Cr-Ni alloy is statistically higher in cola drinks compared with juices.