Results 51 to 60 of about 1,467,829 (302)

New proposal for classifying root and root canal morphology

, 2018
Understanding the anatomy of roots and root canals is fundamental for successful root canal treatment and endodontic surgery. There are numerous reports on anatomical variations of teeth, and several classifications of canal configurations have been ...
Paul M. H. Dummer, De-Deus, G., Dummer, P., Versiani, M. A., Marco A. Versiani, Gustavo De-Deus, Ahmed, H. M. A., Hany M. A. Ahmed   +7 more
core   +1 more source

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source

Anorectal Dysfunction in Systemic Sclerosis: Clinical Phenotypes and Functional Patterns

Arthritis Care &Research, EarlyView.
Objective The aim of this study was to characterize specific physiologic defects in anorectal dysfunction in systemic sclerosis (SSc) using anorectal manometry (ARM), evaluate associations with gastrointestinal (GI) and extraintestinal clinical phenotypes, and explore potential serologic markers for risk stratification.
Timothy Kaniecki, Alireza Amindarolzarbi, Tsion Abdi, John Clarke, Michael Hughes, Ami A. Shah, Zsuzsanna H. McMahan   +6 more
wiley   +1 more source

Endodontic treatment of premolars with atypical root canal anatomy. Case reports [PDF]

The main purpose of the endodontic treatment is to completely remove all of the necrotic and infected tissues from the root canal. The mandibular premolars usually present with a simple root canal configuration—one root and one root canal in it, but ...
Svetlozarova, Slavena; Medical University of Varna, Miteva, Ana-Maria; Medical University of Varna, Borisova-Papancheva, Tsvetelina; Medical University of Varna, Radomirova, Vesela; Medical University of Varna   +3 more
core   +5 more sources

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

Advanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen, Patryk Wąsik, Juan Fernando Cucuyame Morales, Marie Kate Palau, Adrian Francisco Duran Ornelas, Phani Saketh Dasika, Jin Hee Kim, Radhika Laxminarayana, Eric Hintsala, Greta Chang, Junzhi Liao, Lizhi Sun, Nathan Lord, Atsushi Arakaki, Paul Bardunias, Pablo Zavattieri, David Kisailus   +16 more
wiley   +1 more source

Endodontic Management of a Unique Single-rooted Lower Molar

Journal of Primary Care Dentistry and Oral Health
This paper reports on the uncommon canal morphology of a mandibular second molar with a single root and single canal. Endodontic treatment success relies on thorough understanding and management of root canal system variations, including accessory canals
S. Deepak, Gaurav Mishra, Sumit Kumar, Sreeja Gummalla   +3 more
doaj   +1 more source

Macrophage–Fibroblast Crosstalk Governs Tumor Mechanics, as Revealed by Spatiotemporal Force Mapping in 3D Spheroids

Advanced Healthcare Materials, EarlyView.
This study shows crosstalk among tumor cells, fibroblasts, and macrophages alters the physical forces inside 3D tumor spheroids. Incorporating deformable microparticles in 3D tumor spheroids, the researchers mapped mechanical stresses spatially and with respect to tumor growth (temporally).
Kunal P. Pednekar, Daan Vorselen, Jai Prakash   +2 more
wiley   +1 more source

A Cone-Beam Computed Tomography Scanning of the Root Canal System of Permanent Teeth among the Moscow Population

International Journal of Dentistry, 2018
Background. Successful endodontic treatment requires a significant knowledge of root canal anatomy. The aim of this study was to evaluate the root and root canal number of permanent teeth among the Moscow population using cone-beam computed tomography ...
Svetlana Razumova, Anzhela Brago, Lamara Khaskhanova, Ammar Howijieh, Haydar Barakat, Ashot Manvelyan   +5 more
doaj   +1 more source

The application of three⁃dimensional reconstruction⁃based Micro⁃CT in the research of root canal treatment

口腔疾病防治, 2019
Important guarantees of the success of root canal therapy include being familiar with the anatomical fea⁃ tures of root canal system, good root canal preparation and complete root canal filling. With the development of medical imaging technology, three⁃
LI Junliang, YANG Weidong
doaj   +1 more source

Clustomesogen Showing Sub‐Zero Liquid Crystal Properties: Supramolecular Assembly Between Cs2[Mo6Ii8(OCOC2F5)6] and Hexaethylenoxide Containing Mesogenic Dimers

Advanced Materials, EarlyView.
Associating a red‐NIR phosphorescent octahedral hexanuclear molybdenum cluster compound with hexaethyleneoxide chains bearing mesogenic units on both ends leads to an emissive hybrid liquid crystal showing mesomorphism on a very unusual temperature range down to −25°C.
Killiann Heinz, Jeanne Rebours, Zoulikha Zerrouqi, Noée Dumait, Maria Amela‐Cortes, Nikolai Scheuring, Sara Simonovska, Sebastian Marino, Max Ebert, Stéphane Cordier, Sabine Laschat, Yann Molard   +11 more
wiley   +1 more source