Comparative study on the corrosion of Ni-Cr and Co-Cr alloys in the presence of Ti6Al4V implant abutments

Raluca Monica Comaneanu, Iulia Diana Hancu, Costin Coman, Violeta Hancu, Horia Mihail Barbu, Cosmin Mihai Cotrut, Mihaela Cernusca Mitariu, Marius Maris

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Biocompatibility means that the materials of which fixed dental prostheses and implants are made of, should not irritate the surrounding structures, must not lead to the appearance of a inflammatory response or to a allergic reaction of the organism and may not release toxic ions. In the first part of the study we experimentally submitted a titanium implant abutment and three types of dental alloys (two NiCr alloys and one CoCr alloy) to a corrosion process, in similar conditions to the ones in the oral cavity (temperature: 37 ± 0,5°C ; pH values: 5.2 and 7), simulating the situation in which there is one single alloy in the oral cavity at a time. Then, we analysed the corrosion for galvanic couples made of titanium abutment - CoCr alloy and titanium abutment - NiCr alloy. According to the conducted tests, regardless of the pH value to which they have been realised, the NiCr alloys showed a better resistance to corrosion in the absence of the titanium alloy, while the CoCr alloy behaved better to corrosion in the presence of the titanium alloy.

Original languageEnglish
Pages (from-to)1940-1944
Number of pages5
JournalRevista de Chimie
Issue number10
Publication statusPublished - 1 Jan 2016
Externally publishedYes


  • Biocompatibility
  • Corossion
  • Dental alloys

ASJC Scopus subject areas

  • Chemistry(all)

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