Results 171 to 180 of about 1,143,710 (211)

Depositions of Nitrogen on NiTi Instruments

Journal of Endodontics, 2002
This study was designed to obtain nitrogen-rich layers on the surfaces of endodontic files made of nickel-titanium (NiTi) alloy by chemical vapor deposition. Experimental samples (GT rotary instruments) were deposited by using two different methods.
TRIPI, Teresa Roberta, Bonaccorso A, Rapisarda E, Tripi V, CONDORELLI, Guglielmo Guido, Marino R, Fragala I.   +6 more
openaire   +4 more sources

Fabrication Of Hard Coatings On NiTi Instruments

Journal of Endodontics, 2003
The present study was designed to compare the nature of modified surface layers obtained by two different procedures on endodontic files made of NiTi alloy: the procedures were arc evaporation physical vapor deposition and thermal metal organic chemical vapor deposition (MOCVD). Experimental samples were GT Rotary Instruments.
TRIPI, Teresa Roberta, Bonaccorso A, CONDORELLI, Guglielmo Guido   +2 more
openaire   +2 more sources

Enhancement of NiTi Superelastic Endodontic Instruments by TiO2 Coating

Materials Science and Engineering C, 2016
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 ...
Vicente Tadeu Lopes Buono, Manuel Houmard, Isabella Faria da Cunha Peixoto   +2 more
exaly   +3 more sources

Corrosion behaviour of NiTi endodontic instruments

Corrosion Engineering, Science and Technology, 2011
The present study investigates the influence of the sterilisation treatment conducted at 50°C in 5% sodium hypochlorite solution (NaClO) on the corrosion behaviour of endodontic instruments made of NiTi (GT Rotary and K3) and stainless steel (K file) by measuring potentiodynamic polarisation curves in the same environment at 37°C.
Casella G., ROSALBINO, Francesco
openaire   +1 more source

Physical Characterisation of Endodontic Instruments in NiTi Alloy

Materials Science Forum, 2000
NiTi based endodontic instruments are investigated in functionality and wear. The instrument surfaces have been studied applying Auger electron spectroscopy, mechanical analysis, differential-scanning calorimetry, wear tests, and scanning electron microscopy.
L Torrisi, G Di Marco
exaly   +6 more sources

Sterilization of rotary NiTi instruments within endodontic sponges

International Endodontic Journal, 2015
AbstractAimTo determine whether the following can be sterilized by autoclaving – endodontic sponges, rotary nickel–titanium (NiTi) instruments within endodontic sponges, and rotary NiTi instruments with rubber stoppers.MethodologySixty‐four samples of eight different endodontic sponges (n = 512) were placed into brain heart infusion broth (BHI) for 72 ...
H W A, Chan, K H, Tan, S G, Dashper, E C, Reynolds, P, Parashos   +4 more
openaire   +2 more sources

Performance of NiTi endodontic instrument under different temperatures

Odontology, 2015
The purpose of this study was to test nickel titanium (NiTi) instrument performance under different surrounding temperatures. Twenty-four superelastic NiTi instruments with a conical shape comprising a 0.30-mm-diameter tip and 0.06 taper were equally divided into 3 groups according to the temperature employed.
Ahmed, Jamleh, Yoshio, Yahata, Arata, Ebihara, Amre R, Atmeh, Turki, Bakhsh, Hideaki, Suda   +5 more
openaire   +2 more sources

Evaluation of fluoride and sodium hypochlorite solutions during the electrochemical dissolution of conventional NiTi instruments and Gold thermomechanically treated NiTi instruments

International Endodontic Journal, 2019
AbstractAimTo compare the dissolution time of two solutions, a fluoride solution and a sodium hypochlorite solution, both saturated with sodium chloride, during the electrochemical dissolution of instruments consisting of conventional nickel‐titanium alloy and Gold thermomechanically treated nickel‐titanium alloy.MethodologyTwo solutions, an NaF ...
L. G. Cassol, A. Kowalczuck, E. Carneiro, V. P. D. Westphalen, C. A. H. Laurindo, U. X. da Silva Neto   +5 more
openaire   +2 more sources

Topographic changes in NiTi rotary instruments after the clinical use

Australian Endodontic Journal, 2020
AbstractSurface alterations of instruments were investigated after single and multiple uses in the root canals. XP‐endo Shaper (n = 5) and WaveOne GOLD (n = 5) files were used until the separation of the instruments occurred. The apical 3‐mm and separated fragments were analysed by SEM to determine the changes in the instruments and the cross‐sections ...
Kasra Karamifar, Sama Samavi, Mohammad Ali Saghiri   +2 more
openaire   +2 more sources

A new method for the assessment of the surface topography of NiTi rotary instruments

International Endodontic Journal, 2016
AbstractAimTo describe a new method for the assessment of nanoscale alterations in the surface topography of nickel–titanium endodontic instruments using a high‐resolution optical method and to verify the accuracy of the technique.MethodologyNoncontact three‐dimensional optical profilometry was used to evaluate defects on a size 25, .08 taper ...
F, Ferreira, I, Barbosa, P, Scelza, D, Russano, J, Neff, M, Montagnana, M, Zaccaro Scelza   +6 more
openaire   +2 more sources