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. 2016 Nov 1:68:675-680.
doi: 10.1016/j.msec.2016.06.031. Epub 2016 Jun 11.

Enhancement of NiTi superelastic endodontic instruments by TiO2 coating

Diego Pinheiro Aun  1 , Isabella Faria da Cunha Peixoto  2 , Manuel Houmard  3 , Vicente Tadeu Lopes Buono  4
Affiliations

Enhancement of NiTi superelastic endodontic instruments by TiO2 coating

Diego Pinheiro Aun et al. Mater Sci Eng C Mater Biol Appl. .

Abstract

Rotary nickel-titanium (NiTi) endodontic instruments were coated with a nanometric flexible TiO2 layer through dip-coating sol-gel. Control groups and coated samples of superelastic NiTi instruments model RaCe 25/0.06 (0.25mm tip-diameter, 6% conicity) were comparatively investigated with respect to the cutting efficiency, fatigue life, and corrosion resistance. Results showed an improvement in cutting efficiency for the coated samples and a high resistance to corrosion in NaClO. The coated instruments showed a better performance in fatigue life after corrosion.

Keywords: Corrosion; Cutting efficiency; Dip-coating sol-gel; Fatigue; NiTi endodontic instruments; TiO(2) ceramic nanolayer.

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