نتایج جستجو برای: زیرلایة niti

تعداد نتایج: 2206  

2016
Alberto Dagna Giulia Gastaldo Riccardo Beltrami Claudio Poggio

This study evaluated the root canal dentine surface by scanning electron microscope (SEM) after shaping with two reciprocating single-file NiTi systems and two rotating single-file NiTi systems, in order to verify the presence/absence of the smear layer and the presence/absence of open tubules along the walls of each sample; Forty-eight single-rooted teeth were divided into four groups and shap...

2012
Sarah Strauß Sonja Dudziak Ronny Hagemann Stephan Barcikowski Malte Fliess Meir Israelowitz Dietmar Kracht Jörn W. Kuhbier Christine Radtke Kerstin Reimers Peter M. Vogt

The development of large tissue engineered bone remains a challenge in vitro, therefore the use of hybrid-implants might offer a bridge between tissue engineering and dense metal or ceramic implants. Especially the combination of the pseudoelastic implant material Nitinol (NiTi) with adipose derived stem cells (ASCs) opens new opportunities, as ASCs are able to differentiate osteogenically and ...

2016
Michał Sarul Małgorzata Rutkowska-Gorczyca Jerzy Detyna Anna Zięty Maciej Kawala Joanna Antoszewska-Smith

Introduction and Aim. Exceptional properties of the NiTi archwires may be jeopardized by the oral cavity; thus its long-term effect on the mechanical and physiochemical properties of NiTi archwires was the aim of work. Material and Methods. Study group comprised sixty 0.016 × 0.022 NiTi archwires from the same manufacturer evaluated (group A) after the first 12 weeks of orthodontic treatment. 3...

2013
Eduardo Espinar-Escalona José M. Llamas-Carreras José M. Barrera-Mora Camilo Abalos-Lasbrucci Francisco J. Gil-Mur

UNLABELLED NiTi spring coils were used to obtain large deformation under a constant force. The device consists on a NiTi coil spring, superelastic at body temperature, in order to have a stress plateau during the austenitic retransformation during the unloading. The temperature variations induced changes in the spring force. OBJECTIVES The aim of this study is to investigate the effect of the...

Journal: :Journal of oral science 2007
Vahid Zand Maryam Bidar Pari Ghaziani Saeed Rahimi Shahriar Shahi

The aim of this study was to compare the efficacy of NiTi flex K-file instruments and rotary FlexMaster and Race instruments (short for reamers with Alternating Cutting Edges) in root canal preparation. A total of 75 single rooted teeth with minimum curvature (< 5 degrees ) were selected and divided into three groups, each containing 25 teeth. Canals were prepared with NiTi flex K-file, FlexMas...

2015
Ernar Amanov Thien-Dang Nguyen Jessica Burgner-Kahrs

Tubular continuum robots, which are composed of multiple concentric, precurved, elastic tubes, provide more dexterity than traditional surgical instruments at the same diameter. The tubes can be precurved such that the resulting manipulator fulfills surgical task requirements. Up to now the only material used for the component tubes of those manipulators is NiTi, a superelastic shape-memory all...

Journal: :Nigerian journal of clinical practice 2015
K T Ceyhanli A Kamaci M Taner N Erdilek D Celik

AIMS The aim of this study was to evaluate the shaping effects of two M-wire and two traditional nickel-titanium (NiTi) rotary systems in simulated S-shaped resin canals. SUBJECTS AND METHODS Forty simulated S-shaped canals in resin blocks were instrumented with two traditional (ProTaper, Sendoline S5) and two M-wire (WaveOne, GT series X) NiTi systems according to the manufacturers' instruct...

2016
Ahmadreza Jahadakbar Narges Shayesteh Moghaddam Amirhesam Amerinatanzi David Dean Haluk E Karaca Mohammad Elahinia

Process parameters and post-processing heat treatment techniques have been developed to produce both shape memory and superelastic NiTi using Additive Manufacturing. By introducing engineered porosity, the stiffness of NiTi can be tuned to the level closely matching cortical bone. Using additively manufactured porous superelastic NiTi, we have proposed the use of patient-specific, stiffness-mat...

Journal: :JOURNAL OF INDIAN AND BUDDHIST STUDIES (INDOGAKU BUKKYOGAKU KENKYU) 1989

2014
Anupama Swarnkar

AIMS The purpose of this study was to compare the canal centering abilities of rotary nickel-titanium (NiTi) files (ProFile 0.04 and 0.06 and Lightspeed LSX) and NiTi hand K-files in 10° to 25° curved canals. This was compared with the canal centering ability of stainless steel hand K-files using Kuttler's endodontic cube. SETTINGS AND DESIGN The teeth with a 10° to 25° of clinical mesiodista...

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