scholarly journals La concentración de fluoruro en las aguas consumidas en la Región de Murcia no es suficiente para prevenir la caries dental

2021 ◽  
Vol 20 (1) ◽  
pp. 122-138
Author(s):  
Amparo Pérez Silva ◽  
Jaime Aparecido Cury ◽  
Clara Serna Muñoz ◽  
Inmaculada Cabello Malagon ◽  
Yolanda Martínez Beneyto ◽  
...  
Keyword(s):  
Dental Caries ◽  
Tap Water ◽  
Public Health Problem ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Fluoride Intake ◽  
Direct Technique ◽  
External Sources ◽  
Water Fluoride ◽  
Fluoride Ion Selective Electrode

Introducción: La caries sigue siendo la enfermedad crónica más frecuente en el niño y es considerada un problema de salud pública. El flúor es la principal medida protectora contra la caries dental y el agua de consumo es la principal fuente de ingesta de flúor.Objetivo: El objetivo de nuestro trabajo fue calcular la concentración de ión fluoruro en el agua de abastecimiento de 10 zonas y en 10 aguas embotelladas comercializadas en la Región de Murcia.Material y Métodos: La concentración de fluoruro en las aguas se determinó con un electrodo ion–selectivo para flúor previamente calibrado con patrones de fluoruro preparados con TISAB II.Resultados: En el agua de abastecimiento, se detectaron concentraciones de fluoruro entre 0.09 y0.18 mgF/L (ppm) en las aguas embotelladas la concentración de fluoruro varió desde 0.04 a 0.50 ppm.Conclusiones: El fluoruro está presente en aguas consumidas en la Región de Murcia pero enconcentraciones que no alcanzan niveles preventivos para la caries dental. Es necesario prescribir suplementos de flúor en niños con alto riesgo de caries y para ello se deben contabilizar todas las fuentes externas de flúor, incluido el agua. Introduction: Dental caries remains the most frequent chronic disease in childhood and is considered a public health problem. Fluoride has proven effectiveness in the prevention of caries and drinking water is the main source of fluoride intake. The objective of this study was to determine fluoride concentrations in tap water from 10 areas and in 10 bottled waters sold in the Region of Murcia.Materials and Methods: The concentration of fluoride in water was determined using a fluoride ion-selective electrode with a direct technique previously calibrated with standard fluoride concentrations prepared with TISAB II.Results: In tap water, fluoride concentrations from 0.09 to 0.18 mgF/L (ppm) were detected; in bottled waters the concentration of fluoride varied from 0.04 to 0.50 ppm.Conclusion: Fluoride is present in the water consumed in the Region of Murcia but in concentrations that do not prevent dental caries. Fluoride supplements should be prescribed in children at high risk of caries, and for this, all external sources of fluoride intake, including water, must be accounted for.

scholarly journals simplified protocol to determine total fluoride concentration in NaF/ silica-based toothpastes

2020 ◽  
Vol 19 ◽  
pp. e201689
Author(s):  
Jenniffer Quiroz-Torres ◽  
Cinthia Pereira Machado Tabchoury ◽  
Carlos Liñán-Durán ◽  
Antonio Pedro Ricomini-Filho ◽  
Ailin Cabrera-Matta ◽  
...  
Keyword(s):  
Fluoride Concentration ◽  
T Test ◽  
Ion Selective Electrode ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Direct Technique ◽  
The Mean ◽  
Fluoride Salts ◽  
Fluoride Ion Selective Electrode

Aim: To determine total fluoride (TF) concentration in Na2FPO3/Ca-based toothpastes, using fluoride ion selective electrode (F-ISE) by the direct technique, it is necessary to use acid (Ac+) to hydrolyze the FPO3 2- ion and to dissolve insoluble fluoride salts bound to the abrasive. For NaF/silicabased toothpastes, the use of acid is not necessary (Ac-) and a simplified protocol could be followed. Methods: Thus, we evaluated TF concentration in seven brands of NaF/silicabased toothpastes, following the validated conventional Cury’s protocol (Ac+) or a simplification of this protocol (Ac-). Fluoride was analyzed with ISE calibrated with fluoride standard solutions prepared in the same conditions as the samples (Ac+ or Ac-). Results: The mean (±SD; n=21) of TF concentrations (μg F/g) found by Ac+ (971.3±191.2) and Ac- (982.4±201.3) protocols were not statistically different (t test, p=0.22). The TF concentrations found agree with those declared by the manufacturers, except for one toothpaste imported from China. Conclusion: The findings suggest that the determination of fluoride in NaF/silica-based toothpastes can be accurately made using a simplified protocol of analysis.

Automated Fluoride Ion Determination

1977 ◽  
Vol 14 (1-6) ◽  
pp. 269-274 ◽  
Author(s):  
David C. Cowell
Keyword(s):  
Continuous Flow ◽  
Ion Concentration ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Automated Method ◽  
Electrode Response ◽  
Kinetics Of ◽  
Fluoride Ion Selective Electrode ◽  
Flow Techniques

An automated method is described, using standard continuous flow techniques, for the determination of urine fluoride ion concentration using a fluoride ion selective electrode. It is shown that the kinetics of the electrode response to changes in fluoride ion can be used for the accurate measurement of fluoride ion concentration in urine, and that equilibration of the electrode response is not a prerequisite for the measurement of fluoride ion. Recovery experiments are in the range 83 to 90%; in-batch precision is between 0·9 and 1·6% and carryover 2·5% or less.

Determination of inorganic fluoride in blood with a fluoride ion-selective electrode.

1987 ◽  
Vol 33 (2) ◽  
pp. 253-255 ◽  
Author(s):  
E Kissa
Keyword(s):  
Whole Blood ◽  
Fluoride Concentration ◽  
Ion Selective Electrode ◽  
Fluoride Ion ◽  
Inorganic Fluoride ◽  
Selective Electrode ◽  
Cell Potential ◽  
Novel Method ◽  
Fluoride Ion Selective Electrode

Abstract Inorganic fluoride in whole blood, serum, or plasma has been determined with a fluoride ion-selective electrode by adding the 0.5- to 2.0-mL sample to 20 mL of water containing a buffer and fluoride, 25 micrograms/L. The fluoride concentration in the sample is calculated from the resulting cell potential difference recorded after equilibrating for 10 min. This novel method has the advantages of simplicity, accuracy, and high precision, standard deviations for 5 to 7 replicate determinations of fluoride ranging from +/- 1.7 to +/- 2.4 micrograms/L. For whole blood from donors living in an area with fluorinated drinking water, the F- concentration was 20 to 60 micrograms/L.

Chemically Soluble Fluoride in Na2FPO3/CaCO3-Based Toothpaste as an Indicator of Fluoride Bioavailability in Saliva during and after Toothbrushing

2020 ◽  
Vol 54 (2) ◽  
pp. 185-193
Author(s):  
Camila Siqueira Silva Coelho ◽  
Jaime Aparecido Cury ◽  
Cínthia Pereira Machado Tabchoury
Keyword(s):  
Fluoride Concentration ◽  
Area Under The Curve ◽  
Fluoride Ion ◽  
Selective Electrode ◽  
Fresh Sample ◽  
Group V ◽  
Group I ◽  
Adult Participants ◽  
The Relationship ◽  
Fluoride Ion Selective Electrode

The relationship between the concentration of chemically soluble fluoride found in toothpaste and that present in saliva, during and after brushing, was evaluated as an indicator of potentially bioavailable fluoride in toothpaste. Ten adult participants brushed their teeth with the assigned toothpastes: group I: fresh sample of a fluoride toothpaste: Na2FPO3/CaCO3, 1,378 µg F/g of total soluble fluoride (TSF); groups II–IV: aged samples of toothpaste presenting TSF concentrations of 1,160, 900, and 597 µg F/g, respectively; group V: non-F placebo toothpaste. The volunteers brushed their teeth for 1 min with 0.7 g of the toothpaste, all toothbrushing residues (TR) produced were collected, the mouth was rinsed with water, and saliva samples were collected up to 120 min. Total fluoride (TF) and TSF concentrations were determined in TR and in saliva samples using a fluoride ion-selective electrode. TSF concentration (µg F/mL) in TR was determined as an indicator of fluoride bioavailability during toothbrushing and the areas under curves of saliva fluoride concentration versus time (area under the curve, AUC = µg F/mL × min) were calculated as an indicator of fluoride bioavailability after toothbrushing. A significant correlation was found between the TSF concentrations in the toothpastes and the variables TR (r = 0.850; p = 0.0001) and AUC (r = 0.445; p = 0.004). For TF no significant correlation was found for TR (r = –0.099; p = 0.542) and AUC (r = –0.018; p = 0.912). The findings suggest that TSF concentration chemically found in Na2FPO3/CaCO3-based toothpaste could estimate how much fluoride would be bioavailable in saliva when the teeth are brushed.

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