title: Enhancement of NiTi superelastic endodontic instruments by TiO2 coating.
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.
authors: Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Campus Pampulha, 31270-901 Belo Horizonte, MG, Brazil. Electronic address: diegoaun@yahoo.com.br.
authors: Diego Pinheiro
authors: DP
authors: Aun
authors: Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Campus Pampulha, 31270-901 Belo Horizonte, MG, Brazil. Electronic address: bebelpeixoto@hotmail.com.
authors: Isabella Faria da Cunha
authors: IFDC
authors: Peixoto
authors: Department of Materials and Civil Construction Engineering, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Campus Pampulha, 31270-901 Belo Horizonte, MG, Brazil. Electronic address: mhoumard@ufmg.br.
authors: Manuel
authors: M
authors: Houmard
authors: Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Campus Pampulha, 31270-901 Belo Horizonte, MG, Brazil. Electronic address: vbuono@demet.ufmg.br.
authors: Vicente Tadeu Lopes
authors: VTL
authors: Buono
mesh_terms: D000497:Alloys / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D000497:Alloys; D020099:Coated Materials, Biocompatible; C009495:titanium dioxide; D009532:Nickel; D014025:Titanium
keywords: Corrosion; Cutting efficiency; Dip-coating sol-gel; Fatigue; NiTi endodontic instruments; TiO(2) ceramic nanolayer