Results 131 to 140 of about 70,661 (389)

Avaliação in vitro da capacidade de selamento de diferentes materiais usados como barreiras intra-coronal [PDF]

open access: yes, 2016
Introdução: O adequado selamento do sistema de canais radiculatres (SCR) obtido através da obturação, evita a infiltração de micro-organismos entre as paredes do canal radicular e o material obturador, reduzindo a possibilidade de insucesso do tratamento
Mesquita, Fernanda Andrea Roese
core  

Radiographic analysis of root canal fillings: influence of two sealers on the perception of voids [PDF]

open access: yes, 2010
The aim of this ex vivo was to investigate if two radiopaque root canal sealers with different formulations would influence the radiographic perception of root canal fillings.
BERNARDINELI, Norberti   +5 more
core   +2 more sources

Effect of root canal filling materials on dimensions of cone-beam computed tomography images

open access: yesJournal of Applied Oral Science, 2012
Objective To evaluate the discrepancy of root canal filling (RCF) measurements obtained from original root specimens and cone-beam computed tomography (CBCT) images.
D. Decurcio   +5 more
semanticscholar   +1 more source

Uncoupling Metastasis and Epithelial‐to‐Mesenchymal Transition in sgP19/kRAS‐Driven Spontaneous Metastatic Liver Tumor Model

open access: yesAdvanced Science, EarlyView.
The article first reported that a murine mixed typical intrahepatic cholangiocarcinoma (iCCA)/sarcomatoid iCCA liver tumor model with 100% incidence of spontaneous extrahepatic metastasis and confirmed the occurrence of in mouse iCCA. Most importantly, EMT induced by the TGF‐β/ZEB1 axis does not influence tumor development or distant metastasis in this
Jingwen Wang   +12 more
wiley   +1 more source

A Review of Endodontic Bioceramics

open access: yesJournal of Islamic Dental Association of Iran, 2016
Background and Aim: The use of ceramics has a long history. A new category of these materials was used in medicine in 1960 introduced as bioceramics. Biocompatibility, osteoinductivity and sealing ability are among the most favorable characteristics of ...
Hadi Assadian   +4 more
doaj  

Flexibility of Various Nickel-Titanium Rotary Endodontic Files [PDF]

open access: yes, 2014
Introduction: Nickel-titanium rotary files were originally developed to allow for greater flexibility when instrumenting root canals. The increased flexibility of nickel-titanium instruments allowed operators to negotiate canal curvatures with greater ...
Selin, Chelsea
core   +1 more source

High‐Speed, Maneuverable, and Terrain‐Adaptive Micro‐Robot with Tree Frog‐Inspired Bionic Feet

open access: yesAdvanced Science, EarlyView.
A 7.5 mm micro‐robot integrates tree frog‐inspired bionic feet with an electromagnetic linear motor to achieve high‐speed locomotion, slope climbing, and precise turning. It reaches 39 body lengths per second and ascends 30° slopes. The system demonstrates strong potential for inspection tasks in confined and complex environments, such as micro‐aero ...
Weizhi Zhao   +10 more
wiley   +1 more source

Real‐Time In Vivo Cellular‐Level Imaging During Puncture

open access: yesAdvanced Science, EarlyView.
We present an artificial‐intelligence‐empowered integrative‐light‐field microendoscopy (AIM) needle that delivers real‐time in vivo, diffraction‐limited cellular‐level imaging during puncture and visualizes layered microstructures along the needle path. As a microscopic complement to CT/ultrasound, it improves sampling localization and adds preliminary
Huifang Gao   +13 more
wiley   +1 more source

A review of the methods used to study biocompatibility of Portland cement-derived materials used in dentistry [PDF]

open access: yes, 2006
Advanced restorative dentistry may necessitate the need for surgical intervention to the infected root apex. Once access to the root end is achieved, the root apex is resected and filled with a dental restorative material.
Camilleri, Josette
core  

Elevator‐Like Hollow Channels in Porous Scaffolds Accelerate Vascularized Bone Regeneration via NETs‐Fibrin‐Mediated Macrophage Recruitment

open access: yesAdvanced Science, EarlyView.
This study demonstrates that how hollow‐channel scaffolds promote vascularized bone regeneration via an immunomodulatory mechanism. The channel structures facilitate the formation of a neutrophil extracellular traps‐fibrin scaffold that recruits vascular endothelial growth factor A (VEGF‐A)‐secreting M2 macrophages to drive angiogenesis. Combining this
Guifang Wang   +8 more
wiley   +1 more source

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