Results 151 to 160 of about 37,783 (209)

Effect of phytic acid on chemical, structural, and mechanical characteristics of nickel-titanium endodontic files. [PDF]

Sci Rep
Samara M, Nassar M, Alqedairi A, Alfawaz H, Jamleh A.   +4 more
europepmc   +1 more source

Comparison of Initial Alignment Efficiency and Pain Perception of Three Copper-Nickel-Titanium Archwires of Different Manufacturers in Orthodontic Patients: A Randomized Clinical Trial.

J Pharm Bioallied Sci
Agrawal N, Sodawala J, Shukla S, Olfat YA, Taher AO, Olfat TA.   +5 more
europepmc   +1 more source

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The structure of porous nickel titanium reinforced by monolithic nickel titanium

Technical Physics Letters, 2006
The structure and elemental composition of a composite representing porous nickel titanium reinforced by a monolithic nickel titanium rod (TN-10 alloy) have been studied. The structures of the initial TiNi powder (PN55T45S grade), the porous and monolithic parts of this composite, and the transition regions between these parts have been studied using a
V. V. Ovcharenko, A. N. Monogenov, Yu. F. Yasenchuk, V. É. Gyunter   +3 more
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Nickel–titanium: options and challenges

Dental Clinics of North America, 2004
The introduction of nickel-titanium (NiTi) as material for endodontic instruments about 15 years ago opened many new perspectives. Many dentists and scientists see a benefit in using NiFi files. Initial problems such as frequent fractures and the uncertainty of the best way to use them have been solved.
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Superelastic Nickel-titanium Wires

British Journal of Orthodontics, 1992
Superelastic nickel-titanium archwires, unlike conventional wires, are capable of withstanding very large deflections and on returning to their original shape on deactivation will produce more moderate forces. The region over which there is a 'plateau' depends on the deflection and is greater the larger the deflection.
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Anodic Process Kinetics on the Passive Surfaces of Titanium, Nickel, and Titanium‐Nickel Alloys

Journal of The Electrochemical Society, 1978
The anodic oxidation kinetics and electrochemical properties of the passive surfaces of Ti, Ni, and Ti‐Ni alloys (0.2–37.5 w/o) in (pH 5.6 and 10.6) solutions with and without redox couples have been investigated by electrochemical methods. Measurements have been made also on single crystals of (n‐type) and (p‐type) with known electrophysical ...
E. N. Paleolog, A. Z. Fedotova, O. G. Derjagina, N. D. Tomashov   +3 more
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Biocorrosion study of titanium‐nickel alloys

Journal of Oral Rehabilitation, 1996
summary The present study provides results of the corrosion behaviour in Hank's physiological solution and some other properties of three Ti‐Ni alloys with 18, 25 and 28–4 wt% Ni, respectively. Results indicate that a‐titanium and Ti2Ni were the two major phases in all three Ti‐Ni alloys.
J H, Chern Lin, S J, Lo, C P, Ju
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Nickel concentration in the saliva of patients with nickel-titanium orthodontic appliances

American Journal of Orthodontics and Dentofacial Orthopedics, 2009
The purpose of this study was to examine whether nickel-titanium (Ni-Ti) archwires cause an increase of nickel concentration in the saliva of 18 orthodontic patients to estimate the possible risk of these archwires in patients who have nickel hypersensitivity.Saliva samples were collected before orthodontic treatment, after placement of the bands and ...
Evangelia, Petoumenou, Martin, Arndt, Ludger, Keilig, Susanne, Reimann, Hildegard, Hoederath, Theodore, Eliades, Andreas, Jäger, Christoph, Bourauel   +7 more
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Effect of surface treatment on the bioactivity of nickel–titanium

Acta Biomaterialia, 2008
In this paper, the bioactive properties of Ni-Ti alloy after different surface treatments were evaluated in different media (Hanks' balanced salt solution, Dulbecco's modified Eagle's medium and osteogenic). Evaluation was performed on the basis of X-ray photoelectron spectroscopy and atomic force microscopy studies after immersing samples for up to ...
Chrzanowski, W., Abou Neel, E., Armitage, David, Knowles, J.   +3 more
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Electrochemical and surface characterization of a nickel–titanium alloy

Biomaterials, 1998
For clinical implantation purposes of shape memory metals the nearly equiatomic nickel-titanium (NiTi) alloy is generally used. In this study, the corrosion properties and surface characteristics of this alloy were investigated and compared with two reference controls, AISI 316 LVM stainless steel and Ti6A14V.
Wever, Dirk, Veldhuizen, AG, de Vries, J, Busscher, HJ, Uges, DRA, van Horn, James   +5 more
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