Results 61 to 70 of about 1,278 (254)

Clinical Accuracy of Ipex Apex Locator for Measurement of Root Canal Length of Primary Molars

Journal of Islamic Dental Association of Iran, 2014
Background and Aim: Radiography is the most commonly used technique for root canal length determination but its application in pedodontics is difficult due to problems namely the radiation hazards, superimposition of permanent teeth buds and ...
Maryam Karami Nogorani, Maryam Zare Jahromi, Zahra Dehghan, Reyhaneh Talaei   +3 more
doaj  

Liquid Metal Microrobots for Magnetically Guided Transvascular Navigation

Advanced Materials, EarlyView.
Liquid metal‐based microrobots combine magnetic steering, intrinsic X‐ray visibility and softness, to navigate blood vessels even against flow. Under clinically relevant magnetic fields, liquid metal microrobots roll along vessel walls, cross endothelial barriers, and accumulate in target tissues.
Xiaohui Ju, Roshan Velluvakandy, Xianghua Wu, Miguel Angel Merlos Rodrigo, Zbyněk Heger, Kamila Bendíčková, Jan Frič, Martin Pumera   +7 more
wiley   +1 more source

Functional Metal Complexes for Solar–Light‐Driven Energy Conversion

Advanced Materials, EarlyView.
This review provides an exhaustive summary of the recent advancements of functional metal complexes in solar‐to‐electrical, ‐chemical, and ‐thermal energy conversion, comprising material categories, design strategies, underlying principles of operation, and identified improvement of performances.
Yanyan Qin, Dou Luo, Miao Zhang, Wai‐Yeung Wong   +3 more
wiley   +1 more source

Accuracy of Working Length Determination - Electronic Apex Locator Versus Cone Beam Computed Tomography

Pesquisa Brasileira em Odontopediatria e Clínica Integrada
Objective: To compare the accuracy of working length determination between cone beam computed tomography (CBCT) and electronic apex locator by measuring the actual working length of teeth. Material and Methods: A total of 150 single-rooted tooth assessed
Sunayna Kumari, Sharjeel Memon, Bilal Arjumand, Amna Yusuf Siddiqui, Jazib Memon, Osama Shujaa Alothmani, Rakhi Issrani, Muhmmad Rizwan Memon, Azhar Iqbal, Osama Khattak, Namdeo Prabhu   +10 more
doaj  

A Clinical Comparison of Accuracy of an Electronic Apex Locator (EAL) and Radiography in the Determination of Working Length in Primary Molars

Majallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd, 2013
Introduction: Radiography is the most common method for measurement of working length, though it is not the ideal method because of technical problems, radiation hazard, superimposition of permanent teeth bud on primary teeth, and so on.
M Soruri, E Rajaie Behbahani, S Rekabi, Z Bahrolooloomi   +3 more
doaj  

Comparison of the accuracies of multi-frequency electronic apex locators in teeth with enlarged apical foramina: ex vivo

Acta Odontologica Turcica, 2018
Objective: The aim of this study was to compare the accuracy of a newly developed multi-frequency electronic apex locator iPex II with three different multi-frequency electronic apex locators in teeth with different sizes of apical foramina. Materials
Mügem Aslı Ekici, Bağdagül Helvacıoğlu Kıvanç, Adil Ekici   +2 more
doaj   +1 more source

De Rerum Natura: How Do Halide Perovskites Self‐Heal From Damage?

Advanced Materials, EarlyView.
How can lead‐halide‐perovskites self‐heal after damage from light, heat, mechanical strain, or radiation? We show that reversible chemical defects underly performance losses and recovery, highlighting the roles of halide and proton migration, redox‐driven reactions, and acid‐base equilibria.
Davide Raffaele Ceratti, Gary Hodes, David Cahen   +2 more
wiley   +1 more source

Current Switching of Topological Spin Chirality in the van der Waals Antiferromagnet Co1/3TaS2

Advanced Materials, EarlyView.
Spin chirality plays a central role in quantum magnetism, governing spin winding and generating real‐space Berry phases. We propose the intriguing concept of current‐switching spin chirality and demonstrate it via unconventional intrinsic self‐spin‐orbit‐torque in pristine Co1/3TaS2, purely by electrical current and with high energy efficiency.
Kai‐Xuan Zhang, Seungbok Lee, Woonghee Cho, Je‐Geun Park   +3 more
wiley   +1 more source

A comparative evaluation of working length with digital radiography and third generation apex locator (ProPex) in the presence of various intracanal irrigants: An in vivo/ex vivo study

Dental Research Journal, 2014
Background: Accurate working length determination is a pre-requisite for a successful endodontic treatment. Even with improved systems of working length measurement, different readings may be recorded in different electrolytes present in the canal.
Irfana Khursheed, Ruchika Bansal, Tajinder Bansal, Harkanwal Harkanwal Singh, Madhulika Yadav, K Jetender Reddy   +5 more
doaj   +1 more source

Hydrogel‐Based Airway‐on‐Tube With Perfusable Endothelial Lumen and Outward Epithelialization

Advanced Materials, EarlyView.
A hydrogel‐based airway‐on‐tube platform featuring a perfusable endothelial lumen and outward epithelialization is presented. The system supports primary human bronchial epithelial and lung microvascular endothelial coculture under air‐liquid interface conditions.
Ali Doryab, Jack F. Murphy, Michael Bartolf‐Kopp, Jenny C‐C Hsin, Alice Chernaik, Frank McCaughan, Yan Yan Shery Huang, Tomasz Jungst, Jürgen Groll   +8 more
wiley   +1 more source