scholarly journals COMPARISON OF THE POTENCY OF SEVERAL FLUORIDE-BASED VARNISHES AS AN ANTICARIOGENIC ON CALCIUM, PHOSPHATE, AND FLUORIDE ION LEVELS

2018 ◽  
Vol 9 ◽  
pp. 55 ◽  
Author(s):  
Sri Angky Soekanto ◽  
Namira Rosithahakiki ◽  
Dewi Fatma Suniarti ◽  
Mohamad Sahlan
Keyword(s):  
Calcium Phosphate ◽  
Solution Ph ◽  
Fluoride Ions ◽  
Silver Diamine Fluoride ◽  
Treatment Groups ◽  
Phosphate Ions ◽  
Human Dentin ◽  
Golden Standard ◽  
Ph Cycling ◽  
Caries Progression

Objectives: The purpose of this present study was to analyze several fluoride-based varnishes: Silver diamine fluoride (SDF), nanosilver fluoride (NSF), and propolis fluoride (PPF). Fluoride-based varnish is proven to act as antibacterial and remineralization agents that arrested caries progression with minimal side effects. SDF, the golden standard for this study, was compared to NSF and PPF, which were made in our own laboratory, to evaluate their ability to release calcium, phosphate, and fluoride ions and act as anticariogenic agents.Methods: Human dentin discs were prepared and divided into control groups and treatment groups with SDF (38%), NSF (3.16%, 3.66%, and 4.16%), and PPF (3%, 6%, and 10%). The dentin discs were demineralized using a demineralization solution (pH 4.4) for 96 h. Each dentin disc in the treatment group received a topical application of various fluoride-based varnishes and then was subjected to pH-cycling for 8 days. The quantity of calcium, phosphate, and fluoride ions on the dentin discs surface was compared after being detected using energy dispersive X-ray spectroscopy.Results: The result revealed that the calcium ion levels in groups NSF and PPF increased significantly compared to SDF. The levels of phosphate ions and fluoride ions in groups NSF and PPF increased significantly compared to SDF.Conclusion: The study concluded that, in contrast to SDF, the prepared NSF and PPF fluoride-based varnishes were shown to release calcium, phosphate, and fluoride ions in this study. Hence, NSF and PPF fluoride-based varnishes are promising as anticariogenic agents.

scholarly journals Effect of fluoridated varnish and silver diamine fluoride solution on enamel demineralization: pH-cycling study

2006 ◽  
Vol 14 (2) ◽  
pp. 88-92 ◽  
Author(s):  
Alberto Carlos Botazzo Delbem ◽  
Maurício Bergamaschi ◽  
Kikue Takebayashi Sassaki ◽  
Robson Frederico Cunha
Keyword(s):  
Surface Microhardness ◽  
Cross Sectional ◽  
Silver Diamine Fluoride ◽  
Fluoride Solution ◽  
Treatment Groups ◽  
Enamel Demineralization ◽  
Percentage Loss ◽  
Ph Cycling ◽  
Mineral Loss ◽  
Silver Fluoride

OBJECTIVE: In the present investigation, the anticariogenic effect of fluoride released by two products commonly applied in infants was evaluated. METHODS: Bovine sound enamel blocks were randomly allocated to each one of the treatment groups: control (C), varnish (V) and diamine silver fluoride solution (D). The blocks were submitted to pH cycles in an oven at 37ºC. Next, surface and cross-sectional microhardness were assessed to calculate the percentage loss of surface microhardness (%SML) and the mineral loss (deltaZ). The fluoride present in enamel was also determined. RESULTS: F/Px10-3 (ANOVA, p<0.05) in the 1st layer of enamel before pH-cycling were (C, V and D): 1.61ª; 21.59b and 3.98c. The %SMH (Kruskal-Wallis, p<0.05) were: -64.0ª, -45.2b and -53.1c. %deltaZ values (ANOVA, p<0.05) were: -18.7ª, -7.7b and -17.3ª. CONCLUSION: The data suggested that the fluoride released by varnish showed greater interaction with sound enamel and provided less mineral loss when compared with silver diamine solution.

scholarly journals THE POTENTIAL OF SEVERAL FLUORIDE-BASED VARNISHES AS REMINERALIZATION AGENTS: MORPHOLOGICAL STUDIES, DENTIN SURFACE HARDNESS, AND CRYSTALLINITY TESTS

2018 ◽  
Vol 9 ◽  
pp. 60 ◽  
Author(s):  
Sri Angky Soekanto ◽  
Fadiza Fadillah ◽  
Putri Nuraisiya ◽  
Ferry Gultom ◽  
Agoeng T Sarwono
Keyword(s):  
Surface Hardness ◽  
Amorphous Layer ◽  
X Ray Diffraction ◽  
Solution Ph ◽  
Metal Compounds ◽  
Treatment Groups ◽  
Dentin Surface ◽  
Morphological Studies ◽  
Ph Cycling ◽  
Calcium Compounds

Objectives: This study was conducted to analyze the effects of several fluoride-based varnishes: Sodium diamine fluoride (SDF), nanosilver fluoride (NSF), and propolis fluoride (PPF). Fluoride-based varnish is proven to remineralize and arrest caries progression with minimal side effects. SDF, the gold standard for this study, compared to NSF and PPF to observe the dentin morphology, hardness, and crystallinity test.Methods: Dentin blocks were allocated and divided into control groups and treatment groups with SDF (38%), NSF (3.16%, 3.66%, and 4.16%), and PPF (3%, 6%, and 10%). The dentin discs were demineralized using a demineralization solution (pH 4.4) for 96 h. Each dentin disc in the treatment group received a topical application of various fluoride-based varnishes and was then subjected to pH cycling for 8 days. The surface morphology of dentin was observed by a scanning electron micrograph (SEM), dentin hardness was analyzed by a Vickers microhardness tester, and the crystal characteristics of dentin blocks were investigated by X-ray diffraction (XRD).Results: This study showed crystal fluorapatite on the dentin surface of SDF and NSF. There was an amorphous layer on the dentin surface of PPF (10%) detected when using SEM. The Vickers hardness number of dentin increased after the application of SDF, NSF, and PPF. XRD revealed precipitates of apatite compounds, calcium compounds, and metal compounds in the treatment groups in higher concentrations than in the control (demineralized) group.Conclusion: It was concluded that SDF, NSF, and PPF were effective for dentin remineralization. Hence, NSF and PPF fluoride-based varnishes are promising as anticariogenic agents.

Study of Bio-Mineralization of BCP with Compensation of Calcium and Phosphate Ions

2009 ◽  
Vol 610-613 ◽  
pp. 1391-1394
Author(s):  
Hua De Zheng ◽  
Ying Jun Wang ◽  
Qiang Ma ◽  
Cheng Yun Ning ◽  
Xiao Feng Chen
Keyword(s):  
Free Energy ◽  
Calcium Phosphate ◽  
Calcium Ions ◽  
Biphasic Calcium Phosphate ◽  
Porous Ceramic ◽  
Apatite Layer ◽  
Apatite Formation ◽  
Phosphate Ions

In the present study, an Intelligent Multi-parameter Simulated Evaluation in vitro （IMSE system） was used to study the deposition properties of apatite formation on the surface of biphasic calcium phosphate porous ceramic (BCP) from static and dynamic r-SBF. Results showed that apatite formed on the surface of BCP from static and dynamic r-SBF differed between each other. In static r-SBF, ions were transferred by diffusion, which could not compensate the consuming of calcium ions, and mist apatite layer was formed on the surface of samples. But in the dynamic r-SBF, simulated fluid was adjusted precisely and flowed forcedly, the concentrations of ions were homogeneous; with the compensation of ions, calcium and phosphate were supersaturated, and the free energy of apatite formation was negative, bone-like apatite sheets were formed on the surface of samples.

Calcium Phosphate Coating on Titanium Plates by Electrodeposition

2001 ◽  
Vol 711 ◽  
Author(s):  
Masahiko Ishikawa ◽  
Kouji Nishikawa ◽  
Kensuke Kuroda ◽  
Ichino Ryoichi ◽  
Masazumi Okido ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Electrochemical Process ◽  
Calcium Phosphate Coating ◽  
X Ray Diffraction ◽  
Cathodic Current ◽  
Solution Ph ◽  
Cathodic Potential ◽  
Peeling Test ◽  
Film Adhesion ◽  
Phosphate Film

ABSTRACTCalcium phosphate films were deposited on titanium electrodes cathodically from CaCl2·2H2O and Ca(H2PO4)2 · H2O aqueous solutions. In this study, H2O2 addition into electrolytes was applied to enhance the electrochemical process at the solution/electrode at a smaller cathodic potential than no H2O2 addition. Deposited films were analyzed by scanning electron microscopy (SEM) observation and X-ray diffraction (XRD). Cathodic current of the Ti electrode decreased once and increased in the solution with H2O2. It shows a cathodic current peak at c.a. 25 min in the case of potentiostatic condition at - 0.756 V (vs. Ag - AgCl, sat. KCl). The calcium phosphate film grows mainly with the decrease in current after the cathodic peak. The characteristics for the electrodeposited film such as crystal morphology depends on cathodic potential, solution pH, deposition temperature and amount of H2O2 addition. Dense calcium phosphate film composed of relatively good crystalline was obtained at pH 5.5 and – 0.756 V. Film adhesion on Ti appeared to be strong by peeling test. At larger cathodic potential of – 1.156 V, the film coverage on titanium plates was smaller and film adhesion worsened. Larger cathodic polarization of more than – 1.556 V was necessary to reduce water in case without H2O2 addition.

Microfiltration performance: physicochemical aspects of whey pretreatment

1995 ◽  
Vol 62 (2) ◽  
pp. 269-279 ◽  
Author(s):  
Genevieve Gesan ◽  
Georges Daufin ◽  
Uzi Merin ◽  
Jean-Pierre Labbe ◽  
Auguste Quemerais
Keyword(s):  
Calcium Phosphate ◽  
Membrane Surface ◽  
Physicochemical Process ◽  
High Shear ◽  
Lower Content ◽  
Phosphate Ions ◽  
Complex Lipid ◽  
Ionic Calcium ◽  
Calcium Phosphate Particles ◽  
Soluble Calcium

SUMMARYClarification of whey by microfiltration (MF) can be achieved after appropriate pretreatment of the feed. A control pretreatment consists of a physicochemical process comprising increased ionic calcium and pH accompanied by heat (50 °C, 15 min) to cause aggregation of complex lipid–calcium phosphate particles, which are then separated by MF. This pretreatment process was modified by increasing the temperature to 55 °C and by maintaining the pH constant during heat treatment. This modification resulted in larger calcium phosphate particles and a lower content of soluble calcium and phosphate ions. As a consequence, a longer period of MF operation, better whey clarification and lower calcium and phosphate content of the filtrate were achieved. This suggests that a loosely structured deposit was formed on the membrane surface which was less resistant to filtration than that resulting from the control pretreatment. During MF, it was necessary to avoid zones of high shear in the retentate compartment that might cause physical alteration of the aggregates.

scholarly journals Detection of Posner's clusters during calcium phosphate nucleation: a molecular dynamics study

2017 ◽  
Vol 5 (35) ◽  
pp. 7274-7284 ◽  
Author(s):  
Giulia Mancardi ◽  
Carlos Ernesto Hernandez Tamargo ◽  
Devis Di Tommaso ◽  
Nora H. de Leeuw
Keyword(s):  
Molecular Dynamics ◽  
Calcium Phosphate ◽  
Molecular Dynamics Simulations ◽  
Aggregation Process ◽  
Phosphate Ions ◽  
Dynamics Simulations

Molecular dynamics simulations of calcium and phosphate ions in water show that Posner-like clusters originate during the aggregation process.

scholarly journals Incorporation of Proteins with Different Isoelectric Points into Biomimetic Ca-P Coatings: A New Approach to Produce Hybrid Coatings with Tailored Properties

2006 ◽  
Vol 309-311 ◽  
pp. 755-758 ◽  
Author(s):  
H.S. Azevedo ◽  
Isabel B. Leonor ◽  
Rui L. Reis
Keyword(s):  
Calcium Phosphate ◽  
Bovine Serum Albumin ◽  
Hybrid Coating ◽  
Hybrid Coatings ◽  
New Approach ◽  
Phosphate Ions ◽  
Preferential Interactions ◽  
Isoelectric Points ◽  
Different Characteristics ◽  
Positively Charged

This work aims to study the effect of incorporating proteins with different isoelectric points (pI) on the structure, composition and morphology of biomimetic calcium-phosphate (Ca-P) coatings. For that, bovine serum albumin (BSA) and lysozyme, having respectively acidic and basic pIs, were used as model proteins. It was observed that the incorporation of positively charged proteins, such as lysozyme, was able to significantly change the structure of the coatings, possibly due to the preferential interactions between the protein and negatively charged phosphate ions. These results indicated that proteins with different characteristics can be incorporated into biomimetic Ca-P coatings in order to obtain a hybrid coating and at the same tailoring their properties.

scholarly journals New Analytical Approach for the Determination of Calcium Phosphate Dibasic and Tribasic in Processed Food by Comparison of Ion Chromatography with High-Performance Liquid Chromatography

Foods ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 248 ◽  
Author(s):  
Minjung Song ◽  
Juhee Park ◽  
Jihyun Lee ◽  
Heejae Suh ◽  
Hyunjung Lee ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Calcium Phosphate ◽  
Ion Chromatography ◽  
High Performance ◽  
Food Additives ◽  
Food Samples ◽  
Hplc Method ◽  
Processed Foods ◽  
Phosphate Ions

An analytical method to measure solubilized orthophosphate ions (HPO42− and PO43− ) from the water-insoluble food additives calcium phosphate dibasic (DCP) and calcium phosphate tribasic (TCP) in processed foods was optimized by comparing ion chromatography (IC) coupled with DS6 conductivity detector (Cond.) and high-performance liquid chromatography (HPLC) with Evaporative light scattering detector (ELSD) methods. The ion-pairing HPLC method could analyze calcium and phosphate ions successively. However, this method exhibited low reproducibility after approximately 48 hours of measurements. The IC method was established as an effective method of measuring orthophosphate ions with high reproducibility using distilled water and KOH solution as the mobile phase with a Dionex column. Matrix-based limit of detections (LOD) and limit of quantifications (LOQ) for snacks and cereals were estimated in the range of 0.01–0.91 µg/mL and 0.21–2.74 µg/mL, respectively. In inter-day and intra-day tests, the calculated precision (%RSD) and accuracy (recovery %) ranged from 0.5% to 6.6% and 82% to 117%, respectively, in both food samples. The levels of DCP or TCP could be analyzed in various positive food samples, and the developed IC method demonstrated good applicability in the analysis of DCP and TCP in collected processed foods.

Purification of Water from Fluoride Ions by a Lanthanum-Containing Ceramic Material

2018 ◽  
Vol 22 (8) ◽  
pp. 28-31 ◽  
Author(s):  
V.Yu. Chukhlanov ◽  
O.G. Selivanov ◽  
E.S. Pikalov ◽  
C.M. Chesnokova ◽  
A.A. Podolets
Keyword(s):  
Ceramic Material ◽  
Mechanical Characteristics ◽  
Binding Capacity ◽  
Environmental Safety ◽  
Fluoride Ion ◽  
Ion Content ◽  
Fluoride Ions ◽  
Phosphate Ions ◽  
Environmentally Safe ◽  
Purification Of Water

Studies have been carried out to create a lanthanum-containing ceramic material that can be used to purify water from fluoride ions. A composition was developed for the preparation of a ceramic material, the physico-mechanical characteristics of its samples were determined, and their binding capacity to fluoride ions was investigated. There was researched environmental safety of a material. It is proved that when 6% by weight of lanthanum carbonate is added to the charge, an environmentally safe material for cleaning aqueous systems with a fluoride ion content of up to 10 mg/l can be obtained. It has been established that this material can be used with sufficient efficiency to purify water from phosphate ions.

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