Results 21 to 30 of about 291,123 (171)
Assessing Mechanical Agency During Apical Apoptotic Cell Extrusion
iScience, 2023 ABSTRACT Epithelial tissues maintain homeostasis through the continual addition and removal of cells. Homeostasis is necessary for epithelia to maintain barrier function and prevent the accumulation of defective cells. Unfit, excess, and dying cells can be removed from epithelia by the process of extrusion. Controlled
Sommer Anjum +4 more
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Assessment of apical extrusion in regenerative endodontics: a comparative study of different irrigation methods using three-dimensional immature tooth models. [PDF]
Odontology<p>To investigate the apical extrusion of sodium hypochlorite in immature permanent teeth caused by conventional syringe irrigation (CSI), EDDY, XP-endo Finisher file (XP-F), and a new laser irrigation activation system [shock-wave-enhanced ...
Abat VH, Bayrak GD, Gündoğar M.
europepmc +2 more sources
Development of twin screw Rheo extrusion technology [PDF]
, 2013 This thesis was submitted for the degree of Doctor of Philosophy and was awarded by Brunel UniversityTwin Screw Rheo Extrusion (TSRE) is a novel semisolid extrusion process developed at BCAST for producing simple profiles such as rods and wires of light
Cassinath, Zen
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Apical Debris Extrusion with Conventional Rotary and Reciprocating Instruments.
Iranian endodontic journal, 2020 The aim of the present study was to compare the amount of apical debris extrusion after preparation using hand files, reciprocating files, and full rotary nickel-titanium systems.One hundred extracted human mandibular molars with two separated canals in mesial root were divided into five groups and prepared using reciprocating systems (Reciproc file ...
Saberi, Eshagh Ali +2 more
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Defective apical extrusion signaling contributes to aggressive tumor hallmarks [PDF]
eLife, 2015 When epithelia become too crowded, some cells are extruded that later die. To extrude, a cell produces the lipid, Sphingosine 1-Phosphate (S1P), which activates S1P 2 receptors in neighboring cells that seamlessly squeeze the cell out of the epithelium.
Gu, Yapeng +7 more
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Frontiers in Dentistry, 2014 Immature teeth have a large apical opening and thin divergent or parallel dentinal walls; hence, with conventional needle irrigation there is a very high possibility of extrusion.
N Velmurugan +2 more
doaj +1 more source
The Effect of Maintaining Apical Patency on Periapical Extrusion
Journal of Endodontics, 2001 Thirty-three human maxillary incisors were secured in the openings of a glass vial. Root canals were instrumented to the apical constriction with a step-back technique and a patency file was not used throughout the root canal preparation. The irrigant, 1% NaOCl, was delivered by means of a plastic syringe with a 23-gauge needle and the overflow was ...
Lamprianidis, Theodoros +2 more
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Effect of Passive Ultrasonic Irrigation on Apical Extrusion of Irrigating Solution [PDF]
European Journal of Dentistry, 2008 ABSTRACTObjectives: To determine the influence of passive ultrasonic irrigation (PUI) on apical extrusion of irrigating solution.Methods: Twenty freshly extracted maxillary and mandibular incisors with single straight root canals were instrumented with ProTaper rotary files.
Tamer, Tasdemir +3 more
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Cell extrusion in development and cancer, what MARCKS the difference for epithelial integrity? [PDF]
, 2022 Cell extrusion is an active mechanism to eliminate non-viable or supernumerary cells in healthy epithelia. It also plays a role in carcinogenesis, both in tumor growth (apical extrusion) and metastasis (basal extrusion).
Veloz, Lucía +7 more
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Extrusion pressure generated in high alumina content paste extrusion [PDF]
, 2010 Four different alumina pastes with various solvent volume fractions were processed by extrusion free forming and the pressures generated in the extrusion process were recorded and analyzed.
Evans, J.R.G. +7 more
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