Results 41 to 50 of about 7,241,930 (347)

Canal surfaces in 4-dimensional Euclidean space

An International Journal of Optimization and Control: Theories & Applications (IJOCTA), 2016
In the present study, we consider canal surfaces imbedded in an Euclidean space of four dimensions. The curvature properties of these surface are investigated with respect to the variation of the normal vectors and curvature ellipse. We also give some special examples of canal surfaces in E^4.
Bulca, Betül, Arslan, Kadri, Bayram, Bengü, Öztürk, Günay   +3 more
openaire   +4 more sources

Evaluation of canal cleanliness and tubular penetration of root canal sealers in extracted primary second molars: a SEM study

Cumhuriyet Dental Journal, 2013
Objectives: To evaluate canal surface changes and the remaining debris/smear after canal preparation, and the subsequent penetration of root canal sealers into dentinal tubules in extracted primary second molars, using scanning electron microscopy (SEM).
Çiğdem Güler, Mehmet Güler, Taşkın Gürbüz, Yücel Yılmaz   +3 more
doaj   +1 more source

The dentin surface of the root canal comparative characteristics during decontamination with a diode laser, depending on the irrigation solution

Эндодонтия Today, 2020
At present, there are a large number of methods and tools for the root canal system qualitative biomechanical instrumental processing. To remove tissue degradation, lubricated layer and disinfect the root canal system the laser radiation is used being ...

doaj   +1 more source

Dupin Cyclides as a Subspace of Darboux Cyclides

Mathematics
Dupin cyclides are interesting algebraic surfaces used in geometric design and architecture to join canal surfaces smoothly and to construct model surfaces.
Jean Michel Menjanahary, Raimundas Vidunas   +1 more
doaj   +1 more source

Assessment of three root canal preparation techniques on root canal geometry using micro-computed tomography: In vitro study

Saudi Endodontic Journal, 2012
Aim: To assess the effects of three root canal preparation techniques on canal volume and surface area using three-dimensionally reconstructed root canals in extracted human maxillary molars. Materials and Methods: Thirty extracted Human Maxillary Molars
Shaikha M Al-Ali, Musab H Saeed, Fawaz Almjali   +2 more
doaj   +1 more source

Blending Cylinders and Cones using Canal Surfaces

Nonlinear Analysis: Modelling and Control, 2000
There is reviewed the construction of a rational blending surface between cylinders and cones in some interlocation cases. This surface is constructed as a patch of rolling ball envelope, i.e. as a patch of tangent canal surface of rational-variable radius. This construction defines rational parameterization of a blending surface.
Kazakevičiūtė, Margarita, Krasauskas, Rimvydas   +1 more
openaire   +3 more sources

Strength through diversity: how cancers thrive when clones cooperate

Molecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken, Maartje Witsen, Emile E. Voest, Krijn K. Dijkstra   +3 more
wiley   +1 more source

Centering ability, canal transportation and surface modifications of ProTaper F2 and F3 used in continuous rotation and reciprocating motion in curved root canals

Revista da Faculdade de Odontologia de Porto Alegre, 2019
Aims: To evaluate the centering ability, canal transportation and surface modifications of F2 and F3 ProTaper Universal (PT) instruments used in continuous rotation (CR) and reciprocating motion (RM) for the preparation of curved root canals.
Jader Vinicius Andreazza, Miguel Assis Martins dos Santos, Lucas Siqueira Pinheiro, Júlia Eick Iglesias, Fernanda Ulmann Lopez, Fabiana Soares Grecca   +5 more
doaj   +1 more source

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

Molecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix, Daniel Samaga, Katharina Gehr, Benedek Dankó, Mohamed Schumann, Guido Drexler, Ahmed Alnatsha, Georg Beyer, Ujjwal Mahajan, Martin Selmansberger, Julia Mayerle, Claus Belka, Horst Zitzelsberger, Kirsten Lauber   +13 more
wiley   +1 more source

A matched irrigation and obturation strategy for root canal therapy

Scientific Reports, 2021
In root canal therapy, irrigating solutions are employed to eliminate the bacterial load and also prepare dentin for sealer interaction. The aim of this research was to assess how irrigating solutions employed on their own or in sequence affected the ...
Rafaela Fernandes Zancan, M. Hadis, David Burgess, Z. Zhang, A. Di Maio, P. Tomson, M. H. Hungaro Duarte, J. Camilleri   +7 more
semanticscholar   +1 more source