Results 81 to 90 of about 23,825,632 (222)

Biocompatibility and Bioactivity of Four Different Root Canal Sealers in Osteoblastic Cell Line MC3T3-El

치위생과학회지, 2021
Background: Endodontic sealers or their toxic components may become inflamed and lead to delayed wound healing when in direct contact with periapical tissues over an extended period.
Nu-Ri Jun, Sun-Kyung Lee, Sang-Im Lee
doaj   +1 more source

Setting time of calcium silicate-based sealers at different acidic pHs

Giornale Italiano di Endodonzia, 2023
Aim: To evaluate the effect of acidic pH levels on the setting of calcium silicate-based sealers, comparing them with an epoxy resin-based sealer. Methodology: Bio-C Sealer (Angelus, Londrina, Brazil), EndoSequence BC Sealer (Brasseler, Savannah, USA), BioRoot RCS (Septodont, Saint Maur des Fosses, France), or AH Plus Jet (Dentsply DeTrey, Konstanz ...
Teixeira, Cíntia Gasparini, Marciano da Silva, Marina Angélica, Padilha Janini, Ana Cristina, Mendonça de Moura, João Daniel, Pedro Rocha, Daniel Guimarães, Pelegrine, Rina Andréa, Fontana, Carlos Eduardo, Bueno, Carlos Eduardo da Silveira   +7 more
openaire   +1 more source

Influence of calcination temperature on the durability of metakaolin concrete and limitations of conventional testing methods

Structural Concrete, EarlyView.
Abstract Incorporating metakaolin (MK) as a partial cement replacement offers a viable pathway to reduce carbon emissions while improving concrete performance. However, its durability behavior remains inconsistent, and the applicability of durability test methods to MK‐based concrete is not well established.
Mayen J. Geu, Yan Zhuge, Xing Ma, Thong M. Pham   +3 more
wiley   +1 more source

Calcium silicate-based sealers remnants in isthmuses of mesial roots of mandibular molars: an in vitro evaluation [PDF]

Restorative Dentistry & Endodontics
Objectives Endodontic retreatment aims to address treatment failure through the removal of root canal filling materials. This in vitro study evaluated the presence of filling material remnants in the mesial root canals, specifically focusing on the ...
David Saldanha de Brito Alencar, Ana Cristina Padilha Janini, Lauter Eston Pelepenko, Brenda Fornazaro Moraes, Francisco Haiter Neto, Marco Antonio Hungaro Duarte, Marina Angélica Marciano   +6 more
doaj   +1 more source

Biocompatibility of a High-Plasticity, Calcium Silicate-Based, Ready-to-Use Material

, 2020
The Bio-C Sealer is a recently developed high-plasticity, calcium-silicate-based, ready-to-use material. In the present study, chemical elements of the materials were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and ...
Nobuhito Tsumano, Liji Chen, Kazuya Tominaga, Satoshi Komasa, Chihoko Ikeda, Tomoharu Okamura, Yoshiya Hashimoto   +6 more
core   +1 more source

High temperature fracture behavior and damage evolution of recycled aggregate concrete produced from metakaolin modified parent concrete

Structural Concrete, EarlyView.
Abstract The increasing use of recycled aggregate concrete (RAC) offers significant environmental benefits by reducing construction and demolition waste; however, its fracture performance and damage evolution under elevated temperatures remain insufficiently understood, particularly when recycled aggregates are derived from metakaolin modified parent ...
Zubair Yousuf, Viktor Hlavička
wiley   +1 more source

Cyanogenic Compounds, Physicochemical Parameters and Metals in Water From Cassava Processing Areas: A Study in the Brazilian Amazon, Using Multivariate Analysis

Environmental Toxicology, EarlyView.
ABSTRACT This study evaluated the water quality of artesian wells and effluents generated in cassava processing in a rural area of Bragança, Pará, with emphasis on physicochemical parameters, multielement composition, and cyanogenic compounds. The well water presented specific nonconformities, highlighting pH values below the recommended level and high
Alana Coêlho Maciel, Mariane Gama Nabiça, Luciana Pinheiro Santos, Thiago de Melo e Silva, Elivaldo Nunes Modesto Junior, Heronides Adonias Dantas Filho, Charles Miller de Souza Borges, Kelly das Graças Fernandes Dantas, Simone de Fátima Pinheiro Pereira, Ivan Carlos da Costa Barbosa, Beni Jequicene Mussengue Chaúque, Rosinelson da Silva Pena, Nayara Macêdo Peixoto Araújo, Alessandra Santos Lopes   +13 more
wiley   +1 more source

Toward Silica‐Free Compliance: A Low‐Viscosity Sample Pretreatment Methodology for Crystalline Quartz Quantification in Viscous Pastes

X-Ray Spectrometry, EarlyView.
ABSTRACT Crystalline quartz, the most common crystalline silica polymorph, is widely found in industrial products. It is of high regulatory relevance, because its fine fraction, a form of respirable crystalline silica, is classified as an occupational carcinogen, with product‐content thresholds (e.g., 0.1% (w/w) in the European Union) and stringent ...
Giacomo Siviero, Michelle Buoso, Diego Andreola, Giulia Moro   +3 more
wiley   +1 more source

Thermal persistence and physicochemical modification of inorganic gunshot residue (IGSR)

Journal of Forensic Sciences, EarlyView.
Abstract In the medicolegal context, GSR analysis plays a key role in clarifying the dynamics of firearm‐related deaths, including lesion identification and firing distance determination. However, postmortem alterations of the body, such as thermal exposure, may influence the analysis of lesions and complicate interpretation.
Gianmarco Argentiero, Barbara Bertoglio, Nicolas Martinelli, Giulia Pezzoni, Giorgio Marrubini, Federica Maraschi, Giovanni Cecchetto, Silvia D. Visonà, Daniele Merli   +8 more
wiley   +1 more source

Studying How Calcium Silicate and Radiopacifier Proportions Affect the Physicochemical Properties of Endodontic Calcium Silicate-Based Sealers

This study evaluated how varying calcium silicate (30–50%) and radiopacifier (45–65%) ratios affected the physicochemical properties of experimental sealers (P1–P3) compared to Bio-C Sealer, AH Plus Bioceramic, and AH Plus Jet ...
Guilherme Ferreira da Silva, Brenda Stefhany Wilchenski de Souza, Tany Carvalho Moreira da Veiga, Stefani Jovedi Rosa, Marco Antonio Hungaro Duarte, Raimundo Sales de Oliveira Neto, Rodrigo Ricci Vivan, Murilo Priori Alcalde   +7 more
core   +1 more source