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Journal articles on the topic 'Calcium hydroxide NPs'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Purnomo, Agus, and Rodhiansyah Djayasinga. "Green synthesis of Ca(OH)2 nanoparticles from chicken eggshell waste as antibacterial agent." International Journal of Public Health Science (IJPHS) 14, no. 2 (2025): 927. https://doi.org/10.11591/ijphs.v14i2.23869.

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Chicken eggshell waste, though abundant in CaCO3 that can be converted into various products like calcium hydroxide nanoparticles (NPs), has received limited attention. This study aimed to synthesize calcium hydroxide NPs from eggshell waste and evaluate their antibacterial properties against Staphylococcus aureus and Escherichia coli. The researchers employed a top-down approach with thermal decomposition to produce environmental-friendly calcium hydroxide NPs, and conducted in vitro tests to assess their antibacterial activity, with and without exposure to sunlight. The minimum inhibitory co

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Tryfon, Panagiota, Ilektra Sperdouli, Julietta Moustaka, et al. "Hormetic Response of Photosystem II Function Induced by Nontoxic Calcium Hydroxide Nanoparticles." International Journal of Molecular Sciences 25, no. 15 (2024): 8350. http://dx.doi.org/10.3390/ijms25158350.

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In recent years, inorganic nanoparticles, including calcium hydroxide nanoparticles [Ca Ca(OH)2 NPs], have attracted significant interest for their ability to impact plant photosynthesis and boost agricultural productivity. In this study, the effects of 15 and 30 mg L−1 oleylamine-coated calcium hydroxide nanoparticles [Ca(OH)2@OAm NPs] on photosystem II (PSII) photochemistry were investigated on tomato plants at their growth irradiance (GI) (580 μmol photons m−2 s−1) and at high irradiance (HI) (1000 μmol photons m−2 s−1). Ca(OH)2@OAm NPs synthesized via a microwave-assisted method revealed a

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Alawaad, Mohammed Qasim, and Entisar Alabodi. "Improvement anti biological effect of Dycal® Calcium Hydroxide Liner cement by addition of ZnO NPs." Wasit Journal for Pure sciences 2, no. 2 (2023): 204–14. http://dx.doi.org/10.31185/wjps.153.

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Successful root canal therapy depends on preventing bacterial development during treatment sessions. The most frequent method for doing this is by using Dycal® Calcium Hydroxide, but some researchers have indicated that Dycal is ineffective in this area. This study aimed to evaluate the inhibitory effects of Dycal® Calcium Hydroxide based on Staphylococcus, E. coli, and Candida with those of zinc oxide nanoparticles generated by chemical and green synthesis. Characterization of the prepared samples utilizing FE-SEM, EDX, FTIR, and UV-Visible. The amorphous form and particle sizes of the ZnO NP

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Juimo Tchamdjou, Willy Hermann, Sophie Grigoletto, Frédéric Michel, Luc Courard, Toufik Cherradi, and Moulay Larbi Abidi. "Effects of Various Amounts of Natural Pozzolans from Volcanic Scoria on Performance of Portland Cement Mortars." International Journal of Engineering Research in Africa 32 (September 2017): 36–52. http://dx.doi.org/10.4028/www.scientific.net/jera.32.36.

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The aim of this paper is to assess the possibility of using natural pozzolans (NPs) from Cameroonian volcanic scoria as supplementary cementitious materials (SCMs) in the production of Portland cement mortars. Four natural pozzolans (Black Natural Pozzolan: BNP, Dark-Red Natural Pozzolan: DRNP, Red Natural Pozzolan: RNP and Yellow Natural Pozzolan: YNP) with 3600, 4500, 4700 and 5200 cm2/g Blaine fineness respectively were produced from different colors (Black, Dark red, Red and Yellow) volcanic scoria in a laboratory mill. Natural pozzolans were characterized with regard to particle size dist

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Patil, Rutuja, Ajit Hindlekar, Ganesh Ranganath Jadhav, S. R. Srinidhi, Anjali Gaikwad, and Siddharth Shinde. "Comparative evaluation of antimicrobial properties of calcium hydroxide-loaded polylactic-co-glycolic acid nanoparticles and calcium hydroxide: A systematic review and meta-analysis." Journal of Conservative Dentistry and Endodontics 28, no. 8 (2025): 727–33. https://doi.org/10.4103/jcde.jcde_294_25.

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Abstract Aim: The aim of the study was to evaluate the antimicrobial properties of calcium hydroxide (CH)-loaded polylactic-co-glycolic acid (PLGA) nanoparticles (NPs) and CH when used as an intracanal medicament (ICM). Methods: Adhering guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-analysis, the review was registered in the Prospective Registration of Systematic Review-CRD42023454265. Databases from January 2000 to December 2023 were examined for studies evaluating the various properties of CH-loaded PLGA NPs compared to conventional ICM-CH. Using the Cochrane ri

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Vu, Hong, Mohd Khan, Ramakrishna Chilakala, et al. "Utilization of Lime Mud Waste from Paper Mills for Efficient Phosphorus Removal." Sustainability 11, no. 6 (2019): 1524. http://dx.doi.org/10.3390/su11061524.

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In this study, we utilized lime mud waste from paper mills to synthesize calcium hydroxide (Ca(OH)2) nanoparticles (NPs) and investigate their application for the removal of phosphorus from aqueous solution. The NPs, composed of green portlandite with hexagonal shape, were successfully produced using a precipitation method at moderately high temperature. The crystal structure and characterization of the prepared Ca(OH)2 nanoparticles were analyzed by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. The effects of Ca(OH)2 NP dosage and

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Alayed, Hajar S., Sandhanasamy Devanesan, Mohamad S. AlSalhi, Mohammed G. Alkindi, Osama G. Alghamdi, and Nasser R. Alqhtani. "Investigation of Antibacterial Activity of Carob-Mediated Calcium Hydroxide Nanoparticles against Different Aerobic and Anaerobic Bacteria." Applied Sciences 12, no. 24 (2022): 12624. http://dx.doi.org/10.3390/app122412624.

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Carob-mediated calcium hydroxide nanoparticles (C-CaOH2 NPs) are a type of NPs, newly developed via a green synthesis method, that have demonstrated good in vitro biocompatibility. However, their antibacterial potential has not yet been explored. Both calcium hydroxide and carob are known for their antibacterial potency as bulk materials; thus, we hypothesized that C-CaOH2 NPs may exhibit promising antibacterial efficacy. This study aimed to examine the antibacterial activity of C-CaOH2 NPs against aerobic and anaerobic strains using zone of inhibition (ZOI), minimum inhibitory concentration (

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Kazi, Fasiha Moin, Khurram Parvez, Asif Asghar, et al. "In Vitro Evaluation of the Influence of Biosynthesized Calcium Oxide Nanoparticles on the Antibacterial Activity, pH, Microleakage and Cytotoxicity of Conventional Intracanal Medicaments." International Journal of Molecular Sciences 25, no. 22 (2024): 11991. http://dx.doi.org/10.3390/ijms252211991.

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Intracanal medicaments are an important adjunct to the effective disinfection of the root canal system. However, conventional intracanal medicaments do not provide adequate protection against Enterococcus faecalis, which is the organism of interest in many cases of root canal failures. This study aimed to evaluate the influence of biosynthesized calcium oxide nanoparticles (CaO NPs) on the antibacterial activity, pH, microleakage and cytotoxicity of intracanal medicaments. CaO NPs were biosynthesized by the direct thermal decomposition of eggshells (EGS) and the reduction of calcium nitrate wi

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Taglieri, Giuliana, Valeria Daniele, and Ludovico Macera. "Synthesizing Alkaline Earth Metal Hydroxides Nanoparticles through an Innovative, Single-Step and Eco-Friendly Method." Solid State Phenomena 286 (January 2019): 3–14. http://dx.doi.org/10.4028/www.scientific.net/ssp.286.3.

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The objective of this paper is to introduce a patented and eco-friendly method to synthesize aqueous suspension of all types of alkaline-earth metal hydroxides nanoparticles (NPs). This method is based on an ion exchange process; the exchange takes place at ambient temperature/pressure, starts from cheap or renewable reagents and, in one single step, results in the creation of the crystalline desired nanoparticles in only a few minutes. In terms of structural and morphological features, the synthesized nanoparticles are characterized by means of XRD-Rietveld refinement, FTIR, and TEM. In parti

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Gupta, Alpa, Arundeep Singh, and Vivek Aggarwal. "Effect of nanoparticles on antibacterial efficacy of intracanal medicament: A scoping review." Endodontology 35, no. 4 (2023): 283–89. http://dx.doi.org/10.4103/endo.endo_262_22.

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ABSTRACT Aim: The aim of this scoping review is to highlight the effect of nanoparticles (NPs) when incorporated as an intracanal medicament to direct imminent research to understand the efficiency of NPs in clinical scenarios. Methods: A PubMed, Scopus, EBSCO host, and manual search were performed April 18, 2022. Inclusion criteria were set that had to be met by each study for it to be selected for the review. “The review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews Checklist.” Results: Ten in vitro studies tha

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Mahmoud, Hussein Marey. "In Vitro Compatibility of Hydroxyapatite Nanoparticles (HAp-NPs) for Restoration Purposes of Archaeological Lime-Based Plasters." Journal of Nano Research 60 (November 2019): 162–73. http://dx.doi.org/10.4028/www.scientific.net/jnanor.60.162.

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For a number of years, nanomaterials have been considered as a perfect solution to maintain the stability of different cultural heritage materials. In the present trial, hydroxyapatite nanoparticles (HAp-NPs) have been synthesized via the wet chemical reaction of calcium nitrate and ammonium hydroxide. Then, the possible efficiency of HAp-nanoparticles was evaluated to improve restoration formulas for some archaeological lime-based plasters. A broad series of analytical methods, namely OM, FE-SEM, TEM, AFM, XRD and BET surface area-pore size analysis, was selected for characterizing the archae

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Kumar.L, Sampath, Shantha V, and Hariharan P. "CHARACTERIZATION AND ANTIMICROBIAL ACTIVITY STUDIES OF CALCITE-ZINCATE NANOPARTICLES BY GREEN SYNTHESIS." International Journal of Innovative Research in Advanced Engineering 9, no. 10 (2022): 426–34. http://dx.doi.org/10.26562/ijirae.2022.v0910.03.

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Nanoparticles (Nps) are extremely useful in a extensive choice of industries, together with electronics, the environs, cosmetics, material science, and medicinal systems, among others. Calcium Carbonate (CaCO3) and Zinc Oxide (ZnO) nanomaterials have long been popular research topics. It is frequently used in dentistry applications due to its biocompatibility. The purpose of this study was to produce and describe calcium carbonate/zinc oxide nanoparticles (CaCO3/ZnO-NPs) prepared via precipitation method. The precipitation method has many advantages, including being more controllable and repro

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13

Satapathy, Ananya, Kankana Saikia, and Samuel Lalthazuala Rokhum. "Biodiesel Production Using a Banana Peel Extract-Mediated Highly Basic Heterogeneous Nanocatalyst." Sustainability 15, no. 14 (2023): 11332. http://dx.doi.org/10.3390/su151411332.

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Greener methods for the production of nanoparticles (NPs) are highly investigated to minimize the harmfulness of chemical synthetic processes. In this study, CaO (calcium oxide) NPs were synthesized using extracts of banana (Musa acuminata) leaves. The precipitate of Ca(OH)2 (calcium hydroxide) obtained from the precursor Ca(NO3)2 (calcium nitrate) was calcined at 900 °C in a muffle furnace to form CaO. The catalytic activity of the prepared CaO was studied in transesterification of soybean oil. From the 1H-NMR analysis, a high soybean oil conversion of 98.0% was obtained under the optimum rea

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14

Tryfon, Panagiota, Nathalie N. Kamou, Stefanos Mourdikoudis, George Vourlias, Urania Menkissoglu-Spiroudi, and Catherine Dendrinou-Samara. "Microwave-Mediated Synthesis and Characterization of Ca(OH)2 Nanoparticles Destined for Geraniol Encapsulation." Inorganics 11, no. 12 (2023): 470. http://dx.doi.org/10.3390/inorganics11120470.

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Nanotechnology presents promising opportunities for enhancing pest management strategies, particularly in protecting active ingredients to prolong their shelf life and effectiveness. Among different approaches, the combination of inorganic nanoparticles with active ingredients such as the main constituents of natural essential oils in one nanoarchitecture is challenging. In this study, hydrophobic calcium hydroxide nanoparticles coated with oleylamime [Ca(OH)2@OAm NPs] were synthesized using microwave-assisted synthesis. These primary NPs were physicochemically characterized and subsequently u

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Humnabad, Vamshi Krishna, Ajit Hindlekar, S. R. Srinidhi, Adapa Sri Shivapriya, Rutuja Patil, and Ganesh Jadhav. "Comparative evaluation of antibacterial property, pH, and drug release of calcium hydroxide-loaded nanoparticles as intracanal medicament – In vitro study." Journal of Conservative Dentistry and Endodontics 28, no. 7 (2025): 675–86. https://doi.org/10.4103/jcde.jcde_310_25.

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Abstract Background: Effective endodontic treatment relies on eliminating microbial infections and preventing reinfections. Calcium hydroxide (Ca(OH)2) is widely used as an intracanal medicament due to its high pH and antibacterial activity. However, its limited solubility and penetration reduce its efficacy. Nanoparticles (NPs) such as poly lactic-co-glycolic acid (PLGA) and Chitosan have shown promise in enhancing drug delivery and sustained release. Objective: The objective is to evaluate and compare the antibacterial efficacy, pH changes, and in vitro drug release of Ca(OH)2 alone, Ca(OH)2

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Asaad, Mohammad Ali, Ghasan Fahim Huseien, Mohammad Hajmohammadian Baghban, et al. "Gum Arabic Nanoparticles as Green Corrosion Inhibitor for Reinforced Concrete Exposed to Carbon Dioxide Environment." Materials 14, no. 24 (2021): 7867. http://dx.doi.org/10.3390/ma14247867.

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The inhibiting effect of Gum Arabic-nanoparticles (GA-NPs) to control the corrosion of reinforced concrete that exposed to carbon dioxide environment for 180 days has been investigated. The steel reinforcement of concrete in presence and absence of GA-NPs were examined using various standard techniques. The physical/surface changes of steel reinforcement was screened using weight loss measurement, electrochemical impedance spectroscopy (EIS), atomic force microscopy and scanning electron microscopy (SEM). In addition, the carbonation resistance of concrete as well screened using visual inspect

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17

Sato, Yoko, Heisuke Ohata, Akinori Inoue, et al. "Application of Colloidal Dispersions of Bioshell Calcium Oxide (BiSCaO) for Disinfection." Polymers 11, no. 12 (2019): 1991. http://dx.doi.org/10.3390/polym11121991.

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Bioshell calcium oxide (BiSCaO) is a scallop-shell powder heated at a high temperature. BiSCaO is composed mainly of calcium oxide and exhibits broad microbicidal properties. The aim of this study is to evaluate the disinfection and decontamination abilities of BiSCaO colloidal dispersions with that of commercially available bioshell calcium hydroxide (BiSCa(OH)2) following the formation of flocculants/precipitates under strongly alkaline conditions (pH 11.5–12.2). Various concentrations of BiSCaO and BiSCa(OH)2 colloidal dispersions were prepared by mixing with Na-polyPO4 (PP) and Na-triPO4 (

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NEVES, Julia de Oliveira, Franciele de Oliveira DIAS, Laís Stabile PRONI, Maria Letícia Oliveira e. FREITAS, Carolina Simonetti LODI, and Gabriely Cristinni REZENDE. "ANÁLISE ANTIMICROBIANA DO USO DA NANOPARTÍCULA DE PRATA COM HIDRÓXIDO DE CÁLCIO COMO MEDICAÇÃO INTRACANAL." UNIFUNEC CIÊNCIAS DA SAÚDE E BIOLÓGICAS 4, no. 7 (2021): 1–9. http://dx.doi.org/10.24980/ucsb.v4i7.5188.

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O objetivo desse trabalho foi avaliar a atividade antimicrobiana do hidróxido de cálcio (HC) associada a nanopartículas de prata (Ag-NPs) sobre biofilme de Enterococus faecalis. 144 espécimes de dentina foram inoculadas em placas contendo meio de cultura com E. faecalis (ATCC 29212) para a formação de biofilme. As medicações foram preparadas na proporção de 1:1 de HC e soro estéril e, em seguida, pesada e adicionada às concentrações de Ag-NPs 2,5%, 5% e 10%. Decorridos 14 dias, os espécimes foram lavados, transferidos para uma nova placa onde as medicações foram colocadas sobre o biofilme e de

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Prashanth, BR, Bhoomika Revankar, Rupali Karale, Prashant P. Moogi, MG Mangala, and Amaresh Kumar Sahoo. "Comparative assessment of nanosized intracanal medicaments on penetration and fracture resistance of root dentin – An in vitro study." Journal of Conservative Dentistry and Endodontics 27, no. 1 (2024): 17–23. http://dx.doi.org/10.4103/jcde.jcde_138_23.

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Abstract Context: The antimicrobial potential of conventional medicaments is reduced due to their limited permeability. The use of calcium hydroxide (CH) is known to reduce the root strength. Nano intracanal medicaments have the following advantages over conventional such as higher surface area and chemical reactivity, and due to its nanosize, have better penetrability, supporting its possible use as an intracanal medicament. Nano versions of CH, chitosan (CS), CS + CH, curcumin (T), and its conventional forms are used in our study. Aim: The aim of this study was to evaluate and compare the de

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D'arcangelo, C., F. Di Nardo-Di Maio, C. Patrono, and S. Caputi. "NOS Evaluations in Human Dental Pulp-Capping with MTA and Calcium-Hydroxide." International Journal of Immunopathology and Pharmacology 20, no. 1_suppl (2007): 27–32. http://dx.doi.org/10.1177/039463200702001s07.

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Samulionis, A. S., J. K. Voronina, S. N. Melnikov, et al. "Synthesis and X-ray Structures of Polymeric Calcium Carboxylates." Koordinacionnaâ himiâ 50, no. 9 (2024): 613–26. https://doi.org/10.31857/s0132344x24090084.

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The reactions of calcium hydroxide with pivalic, 1-naphthoic, and 2-furancarboxylic acids afford the corresponding polymeric calcium carboxylates. Depending on the crystallization conditions, calcium pivalate is isolated as two different coordination polymers: [Ca3(Piv)6(DMF)2]n · 0.635nC6H6 · 0.365nDMF (I) and [Ca(Рiv)(H2O)2.333(DMF)0.666]n · nРiv·0.333H2O (II). The synthesized calcium 1-naphthoate contains coordinated water molecules [Сa(Naph)2(H2O)2]n (III), and calcium furoate [Ca(Fur)2]n (IV) contains no ancillary ligands. The structures of compounds I–IV are determined by X-ray diffracti

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Natã, Batista Barbosa, Cardoso Albuquerque Maia Freire Danielle, Gustavo Pereira Santana Luiz, and Aparecida Dias Leal Lys. "AVALIAÇÃO DA QUALIDADE DE REMOÇÃO DA MEDICAÇÃO INTRACANAL À BASE DE HIDRÓXIDO DE CÁLCIO." RevistaFT 28, no. 128 (2023): 49. https://doi.org/10.5281/zenodo.10118249.

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  Uma das grandes preocupações da endodontia, é promover uma satisfatória eliminação dos microrganismos instalados nos canais radiculares e tecidos periapicais. O hidróxido de cálcio tem sido considerado a medicação intracanal de escolha por apresentar boas  propriedades como controle microbiano, dissolução de restos orgânicos, poder anti-inflamatório e inibição de reabsorções inflamatórias. A remoção do hidróxido de cálcio é necessária visto que a presença da mesma no sistema de canais dentinários prejudicará a fase de obturação, pois a permanência da medicação pode interferir

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PRONI, Laís Stabile, Maria Letícia Oliveira e. FREITAS, Julia de Oliveira NEVES, Franciele de Oliveira DIAS, Carolina Simonetti LODI, and Gabriely Cristinni REZENDE. "ATIVIDADE ANTIMICROBIANA DA PASTA DE HIDRÓXIDO DE CÁLCIO ASSOCIADA AO ÓLEO DE MAMONA E ÓLEO DE COCO SOBRE BIOFILME DE ENTEROCOCCUS FAECALIS." UNIFUNEC CIENTÍFICA MULTIDISCIPLINAR 12, no. 14 (2023): 1–10. http://dx.doi.org/10.24980/ucm.v12i14.5627.

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O principal objetivo do tratamento endodôntico é alcançar um ambiente livre de bactérias por meio das soluções irrigantes, preparo biomecânico e medicações intracanais. O hidróxido de cálcio é amplamente utilizado como medicação intracanal por apresentar propriedades antimicrobianas e biológicas adequadas ao tratamento endodôntico, normalmente associado a um veículo que permita sua inserção nos canais radiculares. Assim, o objetivo deste estudo foi avaliar a atividade antimicrobiana do hidróxido de cálcio associada a diferentes veículos sobre biofilme de Enterococus faecalis. Foram confecciona

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Carneiro, Y. K. P., B. A. Aguiar, M. T. M. Freitas, et al. "Indicações do emprego de ultrassom durante a terapia endodôntica." Journal of Health Sciences 19, no. 5 (2018): 202. http://dx.doi.org/10.17921/2447-8938.2017v19n5p202.

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Objetivou-se, por meio de uma revisão de literatura, analisar a influência do emprego da agitação ultrassônica nas pastas de Hidróxido de Cálcio (HC) e nos cimentos obturadores. Os artigos foram coletados nas bases de dados Scielo e Pubmed, utilizando os descritores Endodontics, Ultrasound, Calcium Hydroxide e/ou Root Canal Filling, entre 2007 e 2017. Encontrou-se 80 artigos, sendo selecionados 6 destes após análise de títulos e resumos. Como critérios de inclusão, selecionou-se estudos clínicos e laboratoriais utilizando dentes humanos e bovinos, sendo excluídos revisões de literatura e casos

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Silva, C. M. A., L. S. Paiva, D. V. Oliveira, B. O. Nobre, T. A. D. Mendes, and V. p. Feitosa. "Materiais Utilizados para Capeamento Pulpar Direto: uma Revisão da Literatura." Journal of Health Sciences 19, no. 5 (2018): 209. http://dx.doi.org/10.17921/2447-8938.2017v19n5p209.

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O objetivo deste estudo é avaliar as propriedades físico-químicas e biológicas dos principais materiais indicados para capeamento pulpar direto. Revisou-se a literatura, nos bancos de dados Pubmed, Scopus e Scielo, entre 2007 e 2017, buscando artigos em português e em inglês, utilizando os descritores combinados: “Dental Pulp Capping”, “Biocompatible Materials” e “Calcium Hydroxide” como estratégia de busca. Foram obtidos 55 artigos em que 21 estavam em repetição e foram excluídos, dos demais 6 eram revisão de literatura, 3 eram ensaios clínicos e 25 estudos laboratoriais. Através de uma leitu

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Spasiano, Danilo, Andrea Petrella, and Vito Lacedra. "Chemical Destabilization of Fresh and Spent Cutting Oil Emulsions: Differences between an Ecofriendly and Two Commercial Synthetic Lubricants." Sustainability 12, no. 14 (2020): 5697. http://dx.doi.org/10.3390/su12145697.

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The aim of this study was to evaluate if eco-friendly lubricants had an additional advantage over conventional synthetic lubricants in terms of emulsion treatment of metalworking wastewater. To these purpose, two fresh commercial synthetic cutting oil emulsions were compared with an emulsion obtained from a new cutting oil produced from the reuse of slaughtering waste (CADT-605 from Kimya Srl, Bari, Italy). The breaking of the fresh emulsions was carried out with the addition of small amounts of sulfuric acid (2–20 mL/L) followed by pH neutralization by means of calcium hydroxide. During the t

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Arai, Shoji, Satoko Ishimaru, Makoto Miura, Norikatsu Akizawa, and Tomoyuki Mizukami. "Post-Serpentinization Formation of Theophrastite-Zaratite by Heazlewoodite Desulfurization: An Implication for Shallow Behavior of Sulfur in a Subduction Complex." Minerals 10, no. 9 (2020): 806. http://dx.doi.org/10.3390/min10090806.

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Rare nickel hydroxide-hydroxyl carbonate, theophrastite (Ni(OH)2)-zaratite (Ni3(CO3)(OH)4·4H2O) aggregates were found from a partially serpentinized dunite from Fujiwara, the Sanbagawa metamorphic belt of high-pressure intermediate type, Japan. The dunite was regionally metamorphosed within the Sanbagawa subduction complex of Cretaceous age. The theophrastite-zaratite aggregate from Fujiwara most typically occurs in association with nickel sulfides, which form a composite grain with awaruite and magnetite within an antigorite-rich part of the rock. The theophraste-zaratite formed possibly toge

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Barreto, Isabele Lima, Raquel de Fátima Rodrigues Lima, Yana Cavalcante De Araújo, et al. "Avaliação da atividade antimicrobiana de pastas de Hidróxido de Cálcio associado a substâncias auxiliares frente a <em>Enterococcus faecalis</em>: uma revisão integrativa." Brazilian Journal of Development 9, no. 2 (2023): 6842–55. http://dx.doi.org/10.34117/bjdv9n2-048.

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É amplamente descrito na literatura a resistência do Enterococcus faecalis ao Hidróxido de Cálcio (HC), um dos medicamentos intracanais mais utilizados na Endodontia. Esse patógeno é a espécie dominante nas infecções endodônticas persistentes, apresenta patogenicidade devido a formação de biofilme e consequentemente, resistência aos agentes antibacterianos. Com isso, o objetivo geral desse trabalho é analisar, através de uma revisão integrativa, a atividade antimicrobiana e antibiofilme, das pastas utilizadas como medicação intracanal, em diferentes associações e veículos, frente ao Enterococc

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Khanduri, Vidya Sagar, and Shivek Sharma. "Analysis of Concrete Block by Partial Replacement of Cement with Fly Ash." Indian Journal of Structure Engineering 1, no. 1 (2021): 15–19. http://dx.doi.org/10.35940/ijse.a1301.051121.

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The objective of this research is to enhance the properties of concrete by using Fly Ash as a partial substitution of concrete. Tests carried out on cement are Initial and Final setting time and on aggregates, specific gravity and sieve analysis. The mean target strength with given compressive strength at 28 day and quality control level is calculated. Concrete blend proportions for the first tryout mix is calculated and casting of cube of 15mm size with curing for 28 days, and then test for strength using UTM/CTM machines. C-S-H gel as well as Calcium hydroxide as bi product when reacts with

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Khanduri, Vidya Sagar, and Shivek Sharma. "Analysis of Concrete Block by Partial Replacement of Cement with Fly Ash." Indian Journal of Structure Engineering 1, no. 1 (2021): 15–19. http://dx.doi.org/10.54105/ijse.a1301.051121.

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The objective of this research is to enhance the properties of concrete by using Fly Ash as a partial substitution of concrete. Tests carried out on cement are Initial and Final setting time and on aggregates, specific gravity and sieve analysis. The mean target strength with given compressive strength at 28 day and quality control level is calculated. Concrete blend proportions for the first tryout mix is calculated and casting of cube of 15mm size with curing for 28 days, and then test for strength using UTM/CTM machines. C-S-H gel as well as Calcium hydroxide as bi product when reacts with

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Vidya, Sagar Khanduri, and Sharma hivek. "Analysis of Concrete Block by Partial Replacement of Cement with Fly Ash." Indian Journal of Structure Engineering (IJSE) 1, no. 1 (2021): 15–19. https://doi.org/10.54105/ijse.A1301.051121.

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The objective of this research is to enhance the properties of concrete by using Fly Ash as a partial substitution of concrete. Tests carried out on cement are Initial and Final setting time and on aggregates, specific gravity and sieve analysis. The mean target strength with given compressive strength at 28 day and quality control level is calculated. Concrete blend proportions for the first tryout mix is calculated and casting of cube of 15mm size with curing for 28 days, and then test for strength using UTM/CTM machines. C-S-H gel as well as Calcium hydroxide as bi product when reacts with

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Endo, Marcos Sergio, Jessica Behrens Crispim, Nair Narumi Orita Pavan, Alfredo Franco Queiroz, and Margareth Calvo Pessutti Nunes. "Solução Conservadora Diante a Anquilose e Infra-Oclusão de um Dente Avulsionado." Journal of Health Sciences 19, no. 2 (2017): 98. http://dx.doi.org/10.17921/2447-8938.2017v19n2p98-102.

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Avulsão é uma injúria severa que causa danos ao tecido dentário e de suporte, e ocorre principalmente nos incisivos superiores. A anquilose, a reabsorção por substituição e a infra-oclusão são sequelas, frequentemente, detectadas após o reimplante de um dente avulsionado em condições não ideais. O objetivo deste trabalho foi descrever a conduta clínica frente a um incisivo central superior esquerdo (21) avulsionado, reimplantado e procurado atendimento após cinco dias. Menino de 8 anos procurou atendimento juntamente com sua mãe, no Centro Especializado de Traumatismo Dentário, após queda de b

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Lopes, Kelvin Saldanha, Francisco Willyego Holanda Maciel, Roque Soares Martins Neto, Vilana Maria Adriano Araújo, Juscelino de Freitas Jardim, and Mardonio Rodrigues Pinto. "Aplicações e possibilidades terapêuticas do uso do biomaterial quitosana para a odontologia: revisão de literatura." ARCHIVES OF HEALTH INVESTIGATION 9, no. 6 (2020): 587–91. http://dx.doi.org/10.21270/archi.v9i6.4782.

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A quitosana, polissacarídeo linear obtido a partir do exoesqueleto de crustáceos e artrópodes, tem sido pesquisada em Odontologia por suas diversas propriedades terapêuticas. O objetivo do presente estudo foi realizar uma revisão da literatura sobre as aplicações atuais e as possibilidades terapêuticas da quitosana na odontologia. A busca foi realizada através do banco de dados eletrônico do Pubmed, utilizando os descritores Quitosana, Odontologia e Biomateriais. Foram incluídas pesquisas científicas utilizando quitosana em diversas áreas da odontologia e excluídas revisões de literatura e est

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Agus, Purnomo, and Djayasinga Rodhiansyah. "Green synthesis of Ca(OH)2 nanoparticles from chicken eggshell waste as antibacterial agent." International Journal of Public Health Science (IJPHS) 14, no. 2 (2025). https://doi.org/10.11591/ijphs.v14i2.23869.

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Chicken eggshell waste, though abundant in CaCO<sub>3</sub> that can be converted into various products like calcium hydroxide nanoparticles (NPs), has received limited attention. This study aimed to synthesize calcium hydroxide NPs from eggshell waste and evaluate their antibacterial properties against <em>Staphylococcus aureus</em> and <em>Escherichia coli</em>. The researchers employed a top-down approach with thermal decomposition to produce environmental-friendly calcium hydroxide NPs, and conducted in vitro tests to assess their antibacterial activity, with and without exposure to sunlig

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Zhou, Fei, Yang Yang, Yuying Liu, Haotian Deng, Jianhua Rong, and Jianhao Zhao. "A calcium hydroxide/oleic acid/phospholipid nanoparticle induced cancer cell apoptosis by the combination of intracellular calcium overload and lactic acidosis elimination." Journal of Materials Chemistry B, 2023. http://dx.doi.org/10.1039/d3tb00227f.

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Intracellular calcium ion (Ca2+) influences the proliferation–apoptosis balance, and lactic acidosis is an innate feature of malignant tumor. In this study, a calcium hydroxide/oleic acid/phospholipid nanoparticle [CUR-Ca(OH)2-OA/PL NPs] with lipase/pH...

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Leelapornpisid, Warat, Piyaporn Wanwatanakul, and Thanisorn Mahatnirunkul. "Efficacy of calcium hydroxide‐loaded poly(lactic‐co‐glycolic acid) biodegradable nanoparticles as an intracanal medicament against endodontopathogenic microorganisms in a multi‐species biofilm model." Australian Endodontic Journal, November 10, 2023. http://dx.doi.org/10.1111/aej.12812.

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AbstractThis study aimed to evaluate the antimicrobial activity of calcium hydroxide‐loaded poly(lactic‐co‐glycolic acid) nanoparticles (CH‐loaded PLGA NPs) on multi‐species biofilms. Human root blocks were prepared (n = 40), and multi‐species suspensions of Candida albicans, Enterococcus faecalis and Streptococcus gordonii were incubated within the root canals for 21 days. Canals (n = 10/group) were then medicated with saline solution (negative control), chlorhexidine (positive control), calcium hydroxide and CH‐loaded PLGA NPs for 7 days. Samples taken from the 0.1 mm root canal dentin were

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Roig, Xavier, Lyda Halbaut, Firas Elmsmari, et al. "Calcium hydroxide‐loaded nanoparticles dispersed in thermosensitive gel as a novel intracanal medicament." International Endodontic Journal, February 19, 2024. http://dx.doi.org/10.1111/iej.14041.

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AbstractAimDesign, produce and assess the viability of a novel nanotechnological antibacterial thermo‐sensible intracanal medicament This involves encapsulating calcium hydroxide (Ca(OH)2) within polylactic‐co‐glycolic acid (PLGA) nanoparticles (NPs) and dispersing them in a thermosensitive gel (Ca(OH)2‐NPs‐gel). In addition, perform in vitro and ex vivo assessments to evaluate tissue irritation and penetration capacity into dentinal tubules in comparison to free Ca(OH)2.MethodologyReproducibility of Ca(OH)₂‐NPs was confirmed by obtaining the average size of the NPs, their polydispersity index

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SADANANDA, VANDANA, GOWRISH S., R. NARAYANA CHARYULU, and MITHRA N. HEGDE. "PROANTHOCYANIDIN-PLGA NANOPARTICLE INFUSED CALCIUM HYDROXIDE SEALER: ADVANCING MATERIAL PERFORMANCE AND CLINICAL STABILITY IN ENDODONTICS." International Journal of Applied Pharmaceutics, March 7, 2025, 126–33. https://doi.org/10.22159/ijap.2025v17i2.53094.

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Objective: The study presents a novel calcium hydroxide-based endodontic sealer infused with proanthocyanidin nanoparticles (PAC-NPs) encapsulated in poly(actic-co-glycolic acid) (PLGA), designed to enhance critical clinical properties and overcome limitations of traditional sealers. Methods: The sealer's formulation was evaluated for flow, setting time, solubility, dimensional stability, and pH, adhering to ISO 6876:2012 and ANSI/ADA standards 57. The incorporation of PAC-PLGA and calcium hydroxide nanoparticles was analyzed using Attenuated Total Reflectance-Fourier Transform Infrared Spectr

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Mohamed, Alshafey Alsayed, Dalia Mukhtar Fayyad, Mohamed El-Telbany, and Dalia Abd-Allah Mohamed. "Antibacterial biofilm efficacy of calcium hydroxide loaded on Gum Arabic nanocarrier: an in-vitro study." BMC Oral Health 24, no. 1 (2024). http://dx.doi.org/10.1186/s12903-024-03941-3.

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Abstract Background An innovative intracanal medication formulation was introduced in the current study to improve the calcium hydroxide (Ca(OH)2) therapeutic capability against resistant Enterococcus faecalis (E. faecalis) biofilm. This in-vitro study aimed to prepare, characterize, and evaluate the antibacterial efficiency of Ca(OH)2 loaded on Gum Arabic (GA) nanocarrier (Ca(OH)2-GA NPs) and to compare this efficiency with conventional Ca(OH)2, Ca(OH)2 nanoparticles (NPs), GA, and GA NPs. Materials and methods The prepared nanoparticle formulations for the tested medications were characteriz

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Gautam, Nandita, Sonam S. K. Bohra, Rutvi Upadhyay, et al. "The Evaluation of Anti-Osteoclastic Activity of the Novel Calcium Hydroxide Biodegradable Nanoparticles as an Intracanal Medicament." Journal of Pharmacy and Bioallied Sciences, October 21, 2024. http://dx.doi.org/10.4103/jpbs.jpbs_1288_24.

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ABSTRACT Objective: The present investigation looked into PLGA micron-sized particles or NPs, loaded with calcium hydroxide for canal disinfecting processes which have antimicrobial properties, given the significant rejection probabilities related to these kinds of treatments. Methodology: The MIC and inhibitory growing zones (n = 5) were found using the broth dilution and agar diffusion tests, accordingly. Employing confocal microscopy and live/dead labelling, cell viability was evaluated (n = 5). ANOVA was used to evaluate, and post hoc analysis came next. Results: Ca(OH)2 NPs showed a minim

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Khine, Ei Ei, Daniel Koncz-Horvath, Ferenc Kristaly, et al. "Synthesis and characterization of calcium oxide nanoparticles for CO2 capture." Journal of Nanoparticle Research 24, no. 7 (2022). http://dx.doi.org/10.1007/s11051-022-05518-z.

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Abstract In this paper, the preparation of calcium oxide (CaO) nanoparticles (NPs) is reported by a precipitation method, using CaCl2 and NaOH as starting raw materials. The produced NPs were characterized for chemical composition, phase composition, particle size distribution, morphological features, specific surface area, and crystallite sizes. It is shown that calcination of Ca(OH)2 in vacuum takes place faster/at a lower temperature compared to the calcination in air due to the higher entropy of the gaseous product of calcination. It is also shown that when these CaO nanoparticles are kept

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Nageeb, Wedad M., Sherouk Hussein Adam, Nasr Hashem, and Nelly Abdelsalam. "In-vitro and In-silico evaluation of antimicrobial and antibiofilm effect of Neem oil and Calcium hydroxide nanoparticles against Mutans Streptococci and Enterococcus faecalis isolated from endodontic infections." Scientific Reports 14, no. 1 (2024). http://dx.doi.org/10.1038/s41598-024-75669-7.

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AbstractDifferent Streptococcal species including Streptococcus mutans, Streptococcus sobrinus and Enterococcus faecalis are commonly isolated in root canal infections including refractory, recurrent, and persistent cases. Calcium hydroxide (Ca (OH)2) has been widely used in endodontics as an intracanal medicament. However, using new antimicrobial herbal alternatives offers promising potentials which can be additionally enhanced by using nanoparticles (NPs). In this study, we evaluate the antimicrobial efficacy and antibiofilm effect of Neem oil including its NPs preparations and we compare th

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Pervaiz, Seemab, Syed Waqar Hussain Shah, Zain ul Wahab, Muhammad Farooq, Abdul Haleem, and Amir Zada. "Oil mediated polymer based green synthesis of calcium hydroxide nanoparticles and their application in bone conservation." Zeitschrift für Physikalische Chemie, December 20, 2023. http://dx.doi.org/10.1515/zpch-2023-0452.

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Abstract The present research is characterized by ecofriendly, low cost and robust methods to synthesize calcium hydroxide (CH) nanoparticles using clove oil as capping and reducing agent and nonionic block copolymers as surface modifiers and particle size reducers. The prepared nanoparticles were characterized using UV–visible spectroscopy, dynamic laser light scattering, X-ray diffraction, Fourier transform infra-red spectroscopy, energy dispersive X-ray spectroscopy and transmission electron microscopy. The average effective diameter and crystallite size of particle calculated from DLS and

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Ataei, Fatemeh, Ali Ahmadi, Mahdi Fasihi‐R, Reza Kachoei, Jafar Amani, and Ali Najafi. "Immunogenicity of different nanoparticle adjuvants containing recombinant RBD coronavirus antigen in animal model." Biotechnology and Applied Biochemistry, November 30, 2023. http://dx.doi.org/10.1002/bab.2542.

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AbstractOngoing mutations of SARS‐CoV‐2 present challenges for vaccine development, promising renewed global efforts to create more effective vaccines against coronavirus disease (COVID‐19). One approach is to target highly immunogenic viral proteins, such as the spike receptor binding domain (RBD), which can stimulate the production of potent neutralizing antibodies. This study aimed to design and test a subunit vaccine candidate based on the RBD. Bioinformatics analysis identified antigenic regions of the RBD for recombinant protein design. In silico analysis identified the RBD region as a f

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Saji, Shalin Ann, Chitharanjan Shetty, Gurmeen Kaur, et al. "Comparison of Various Irrigation Techniques for the Removal of Silicone Oil-Based Calcium Hydroxide Intracanal Medicament from the Apical Third: An SEM Study." Journal of Health and Allied Sciences NU, July 5, 2024. http://dx.doi.org/10.1055/s-0044-1788066.

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Abstract Objective To evaluate the efficacy of various irrigants (5.25% sodium hypochlorite [NaOCl] followed by 17% ethylenediaminetetraacetic acid [EDTA] and 0.2% chitosan nanoparticle [NP]) and different irrigation techniques (conventional and EndoVac) for the removal of Metapex from the apical third of the root canal by scanning electron microscopy (SEM) analysis. Materials and Methods Forty extracted single-rooted human premolars were instrumented using a rotary ProTaper file system up to F3. The canals were dried and Metapex was placed inside the root canal. The access cavity was sealed w

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Rodrigues, José Delgado, and Ana Paula Ferreira Pinto. "CONSOLIDAÇÃO DE CALCÁRIOS MUITO POROSOS, PROBLEMAS E PERSPECTIVAS DE SOLUÇÃO." Geonomos, December 31, 2016. http://dx.doi.org/10.18285/geonomos.v24i2.884.

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ResumoOs calcários muito porosos estão presentes em muitos objectos e construções de valor cultural e os problemas que frequentemente apresentam são de muito difícil resolução. O artigo faz uma breve resenha sobre os problemas e sobre os principais métodos que têm sido propostos para repor a coesão em zonas muito afectadas pela deterioração. A consolidação com resinas orgânicas e com silicatos de etilo têm mostrado sérios inconvenientes, pelo que as alternativas de consolidação com produtos de base inorgânica, caídos em desuso nas épocas recentes, estão a merecer novos esforços de investigação

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Brimo, Nura, Dilek Çökeliler Serdaroğlu, Tansel Uyar, et al. "Novel Electrospun Polymeric Nanofibers Loaded Different Medicaments as Drug Delivery Systems for Regenerative Endodontics." Current Drug Delivery 19 (April 18, 2022). http://dx.doi.org/10.2174/1567201819666220418102732.

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Background: A combination of antibiotics, including metronidazole (MET), ciprofloxacin (CIP), and minocycline (MINO), has been demonstrated to disinfect bacteria in necrotic teeth before regenerative processes. It has been presented clinically that antibiotic pastes may drive to possible stem cell death, difficulties in removing from the canal system, which can limit the regenerative procedure. This study was designed to (1) synthesize nanofibrous webs containing various concentrations of different medicaments (triple, double, and calcium hydroxide, Ca(OH)2), (2) coat this electrospun fibrous

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