Results 61 to 70 of about 1,143,710 (211)

The extended finite element method in endodontics: A scoping review and future directions for cyclic fatigue testing of nickel–titanium instruments

Clinical and Experimental Dental Research
Objectives The present study reviews the current literature regarding the utilization of the extended finite element method (XFEM) in clinical and experimental endodontic studies and the suitability of XFEM in the assessment of cyclic fatigue in rotary ...
Philip Yuan‐Ho Chien, Laurence James Walsh, Ove Andreas Peters   +2 more
doaj   +1 more source

Efficacy of different instrumentation techniques on reducing Enterococcus faecalis infection in experimentally infected root canals

Journal of Dental Sciences, 2014
Background/purpose: Enterococcus faecalis is the bacterium most commonly isolated from infected root canals. This study evaluated the effects of four instrumentation techniques on reducing E. faecalis in curved root canals.
Ebru Özsezer Demiryürek, Elif Kalyoncuoğlu, Esra Duran, Ahmet Yılmaz Çoban, Yeliz Tanrıverdi Çaycı   +4 more
doaj   +1 more source

Phase transformation and mechanical properties of heat-treated nickel-titanium rotary endodontic instruments at room and body temperatures

BMC Oral Health, 2023
Background The aim of this study was to evaluate the phase composition, phase transformation temperatures, bending property, and cyclic fatigue resistance of different heat-treated nickel-titanium (NiTi) rotary instruments with the same tip diameter and ...
Yuka Kasuga, Shunsuke Kimura, Keiichiro Maki, Hayate Unno, Satoshi Omori, Keiko Hirano, Arata Ebihara, Takashi Okiji   +7 more
doaj   +1 more source

A Comprehensive Review on Additive Manufacturing of Smart Components: Technologies, Applications, and Future Scope

Advanced Intelligent Systems, EarlyView.
How can additive manufacturing enable components that sense, adapt, heal, and power themselves? This review synthesizes recent advances in smart functionalities, manufacturing technologies, and intelligent design strategies, revealing a pathway toward fully integrated, autonomous, and multifunctional systems across diverse engineering sectors. Additive
Aiswarya Rony, P. M. Ushasree, Michael Short, Jinoop Arackal Narayanan   +3 more
wiley   +1 more source

Influence of NiTi alloy on the root canal shaping capabilities of the ProTaper Universal and ProTaper Gold rotary instrument systems

Journal of Applied Oral Science
Objective This study aimed to evaluate the influence of the NiTi wire in Conventional NiTi (ProTaper Universal PTU) and Controlled Memory NiTi (ProTaper Gold PTG) instrument systems on the quality of root canal preparation. Material and Methods Twelve
Jussaro Alves DUQUE, Rodrigo Ricci VIVAN, Bruno Cavalini CAVENAGO, Pablo Andrés AMOROSO-SILVA, Ricardo Affonso BERNARDES, Bruno Carvalho de VASCONCELOS, Marco Antonio Hungaro DUARTE   +6 more
doaj   +1 more source

A finite element study on the mechanical behavior of reciprocating endodontic files

Brazilian Journal of Oral Sciences, 2015
Aim: To evaluate the mechanical behavior of reciprocating endodontic files, comparing nickeltitanium (NiTi) and stainless steel 316L (St.St. 316L) as manufacturing material for such instruments.
Mohamed I. El-Anwar, Ayman O. Mandorah, Salah A. Yousief, Tarek A. Soliman, Tarek M. Abd El-Wahab   +4 more
doaj   +1 more source

Evaluation of stress distribution in nickel-titanium rotary instruments with different geometrical designs subjected to bending and torsional load: a finite element study

Bulletin of the National Research Centre, 2020
Introduction Geometrical designs of nickel-titanium (NiTi) rotary instruments have a considerable influence on their mechanical performance, and thereby have the tendency to fracture.
Manar Galal, Tamer M. Hamdy
doaj   +1 more source

Shape Sensing, Mapping, and Obstacle Avoidance of the Continuum Manipulator in Confined Environments

Advanced Intelligent Systems, EarlyView.
An integrated sensing framework combines capacitive sensors, IMU, and laser array sensor. The shape reconstruction is finished by backpropagation neural network. Accurate shape estimation (relative error of 1.04%) is maintained under a 110 g tip load, while a miniaturized VL6180X array enables local environmental reconstruction and reactive obstacle ...
Pengyuan Wang, Shi Qiao, Zhaoye Dong, Yuxuan Wang, Runte Song, Fengguang Jia, Shu Wang, Yongchang Zhang, Zhiguang Xing, Jianwen Zhao   +9 more
wiley   +1 more source

Recent Advances in Ionizing Radiation as a Nonequilibrium Chemical Field for Catalysis

Carbon and Hydrogen, EarlyView.
Ionizing radiation acts as a nonequilibrium chemical field that generates reactive species and structural perturbations. These radiation‐induced effects bridge catalytic material construction, including metal loading, framework evolution, defect engineering, and carbon‐network reorganization, with selective transformations such as oxidation, reduction,
Junhua Kuang, Zhuo Liu, Jinlong Wan, Wenjie Duan, Li Peng, Liuxuan Cao, Jia Yu, Jian‐Feng Li, Shuliang Yang   +8 more
wiley   +1 more source

Desenvolvimento e aplicação de fases extratoras para técnicas de preparação de amostras [PDF]

, 2009
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Químca.A fragilidade da sílica fundida e a necessidade de suportes robustos para microextração em fase sólida (SPME) têm ...
Budziak, Dilma
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