Results 1 to 10 of about 21,191 (233)

Micro-CT evaluation of apical delta morphologies in human teeth [PDF]

Scientific Reports, 2016
AbstractThe apical delta is an intricate system within the root canal and incompletely debridement may affect the long-term prognosis of root canal therapy. The aim of the present study is to investigate the morphologic features of apical deltas in human teeth with micro-computed tomography (micro-CT) using a centreline-fitting algorithm.
Bing Fan, Wei Fan, Franklin Tay
exaly   +5 more sources

Apical delta filling with calcium silicate and epoxy resin sealers using different obturation techniques by microcomputed tomography [PDF]

Journal of Applied Oral Science
Objectives This study aimed to evaluate the filling quality of simulated apical deltas in 3D-printed tooth replicas using microcomputed tomography and comparisons of two obturation techniques and calcium silicate cement-based sealer groups. Methodology
Washington Soares dos Santos, Jefferson Augusto, Angelo José Sócrates Torres-Carrillo, Igor Bassi Ferreira Petean, Antonio Miranda da Cruz-Filho, Manoel Damião de Sousa-Neto, Fabiane Carneiro Lopes-Olhê, Jardel Francisco Mazzi-Chaves   +7 more
doaj   +5 more sources

Neuralized Promotes Basal to Apical Transcytosis of Delta in Epithelial Cells [PDF]

Molecular Biology of the Cell, 2010
Notch receptors mediate short-range signaling controlling many developmental decisions in metazoans. Activation of Notch requires the ubiquitin-dependent endocytosis of its ligand Delta. How ligand endocytosis in signal-sending cells regulates receptor activation in juxtaposed signal-receiving cells remains largely unknown.
Roland Le Borgne, François Schweisguth   +1 more
exaly   +4 more sources

Electrode impedance dynamics in sequential cochlear implant users: insights into cochlear immunity [PDF]

Frontiers in Immunology
IntroductionCochlear implant outcomes can be limited due to immunologically mediated intracochlear foreign body responses, resulting in new bone growth and fibrosis.
Logan L. Flom, Eva L. Rasche, Jacob J. Oleson, Rachel A. Scheperle, Marlan R. Hansen   +4 more
doaj   +2 more sources

Delta-Notch Signaling: The Long and the Short of a Neuron’s Influence on Progenitor Fates

Journal of Developmental Biology, 2020
Maintenance of the neural progenitor pool during embryonic development is essential to promote growth of the central nervous system (CNS). The CNS is initially formed by tightly compacted proliferative neuroepithelial cells that later acquire radial ...
Rachel E Moore, Ana Alexandre
exaly   +3 more sources

Quantitative Evaluation of Apical Delta Morphologies in Mesial Roots of Mandibular First Molar Teeth: A Micro-CT Study

Turkiye Klinikleri Dishekimligi Bilimleri Dergisi, 2017
Objective: The apical delta is the branching of the main root canal dividing into three or more ramifications near the root apex, while the main canal itself becoming indistinguishable. Aim of this study was to analyze apical delta morphologies of mesial root canals of mandibular first molar teeth quantitatively using micro--computed tomography (micro--
Cangül Keskin, Ali Keles
exaly   +3 more sources

The Arp2/3 complex and WASp are required for apical trafficking of Delta into microvilli during cell fate specification of sensory organ precursors [PDF]

Nature Cell Biology, 2009
Cell fate decisions mediated by the Notch signalling pathway require direct cell-cell contact between adjacent cells. In Drosophila melanogaster, an external sensory organ (ESO) develops from a single sensory organ precursor (SOP) and its fate specification is governed by differential Notch activation.
Hugo J Bellen, An-Chi Tien, Schulze Karen L   +2 more
exaly   +3 more sources

Analysis of the apical constriction using micro-computed tomography and anatomical sections

Giornale Italiano Di Endodonzia, 2014
Objectives: The aim of this study is to assess the morphology, the prevalence and the topography of the apical constriction (AC) through a tridimensional analysis and compare the results with the available data reported in the literature.
Filippo Citterio, Marcello Maddalone
exaly   +3 more sources

Morphology of Accessory Canals in Mandibular First Molar of a Malaysian Subpopulation Using a Novel Coding System: A Micro-computed Tomographic Study [PDF]

European Endodontic Journal
Objective: This study investigated the morphology of accessory canals in the mandibular first molar of a Malaysian subpopulation. Methods: A total of 140 mandibular first molars were scanned using micro-computed tomography.
Hasan Mohsen Al Rammahi, Wen Lin Chai, Hany Mohamed Aly Ahmed   +2 more
doaj   +2 more sources

Structural heterogeneity and dynamics in the apical stem loop of s2m from SARS-CoV-2 Delta by an integrative NMR spectroscopy and MD simulation approach

Nucleic Acids Research
Abstract In structured RNAs, helical elements are often capped by apical loops that are integral structural elements, ranging from 3 to >20 nts of size on average, and display a highly heterogeneous energy landscape profile, rendering structural characterization particularly challenging.
Harald Schwalbe, Anna Wacker, Christian Richter   +2 more
exaly   +4 more sources