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Pregled bibliografske jedinice broj: 935623

Corrosion behavior of coated and uncoated nickel- titanium orthodontic wires in artificial saliva with short-term prophylactic fluoride treatment


Katić, Višnja; Ivanković Buljan, Zorana; Špalj, Stjepan; Otmačić Ćurković, Helena
Corrosion behavior of coated and uncoated nickel- titanium orthodontic wires in artificial saliva with short-term prophylactic fluoride treatment // International Journal of Electrochemical Science, 13 (2018), 5; 4160-4170 doi:10.20964/2018.05.69 (međunarodna recenzija, članak, znanstveni)


Naslov
Corrosion behavior of coated and uncoated nickel- titanium orthodontic wires in artificial saliva with short-term prophylactic fluoride treatment

Autori
Katić, Višnja ; Ivanković Buljan, Zorana ; Špalj, Stjepan ; Otmačić Ćurković, Helena

Izvornik
International Journal of Electrochemical Science (1452-3981) 13 (2018), 5; 4160-4170

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Cyclic polarization scan ; electrochemical impedance spectroscopy ; nickel-titanium wire ; surface coating ; topical fluoride

Sažetak
The objective was to evaluate and compare the corrosion stability of nickel-titanium (NiTi) wires with various coatings in the course of a weekly prophylactic regime. Uncoated (uNiTi), nitride (NNiTi) and rhodium (RhNiTi)-coated nickel-titanium archwires were immersed in artificial saliva for 28 days. Once per week, for five minutes, the wires were immersed in different topical fluoride gels. Wires from every experimental group were subjected to electrochemical testing (open circuit potential, electrochemical impedance spectroscopy (EIS) and cyclic polarization). The corrosion resistance of the uNiTi and NNiTi wires did not differ, regardless of the immersion media. The corrosion resistance of the RhNiTi wires decreased after prolonged exposure to artificial saliva and repeated exposure to remineralizing agents with low HF concentration. In contrast, the resistance to corrosion increased after repeated exposure to re-mineralizing agents with high HF concentration. EIS testing showed that uNiTi and NNiTi in all media and RhNiTi in the highest HF media displayed a surface oxide coating, whereas RhNiTi in all other media showed an outer porous oxide layer above the compact oxide layer. Repeated application of prophylactic agents with high fluoride concentrations decreases the barrier properties of the surface coating on uNiTi and NNiTi wires and disrupts formation of the porous layer of corrosion products inside the pores of the noble coating on RhNiTi wires.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

Napomena
This research was supported by the Croatian Science Foundation (HRZZ) grant number IP-2014-09-7500.



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2014-09-7500 - Imunosne i regenerativne implikacije korozije dentalnih materijala u djece i adolescenata

Ustanove
Medicinski fakultet, Rijeka

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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