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Instituto Nacional de Salud Pública

2025, Number 1

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salud publica mex 2025; 67 (1)

Fluoride content in table salt from the Element Project in Mexico City

Tamayo-Cabeza G, Mantilla-Rodríguez A, Cantoral A, Téllez-Rojo MM, Peterson KE, Hu H, Martínez-Mier EA

Language: English
References: 35
Page: 48-55
PDF size: 489.77 Kb.


ABSTRACT

Objective. This study evaluated fluoride content in table salts from participants’ households of the Element project, comparing them with the Mexican standards of fluoride content in table salt (200 to 250 mg/kg). Materials and methods. Salt samples were collected from households of mother-offspring pairs participating in Element. Salt samples were analyzed in duplicates using a combination fluoride ionselective electrode and a pH/ISE meter. Results. Among 657 samples from 14 brands, fluoride varied from 0.016 to 477.9 mg/kg with a median (IQR) of 142.5 (136.9). Of salts labeled as fluoridated or containing fluoride (n= 607), we found that 72.8% (n= 442) had fluoride content below the recommended range and 13.8% (n= 84) were above the Mexican norm. Only 81 salt samples (13.3%) fell within recommended limits. Conclusion. Future studies with representative sampling are needed to evaluate table salt fluoride content, especially in high-fluoride areas, to inform potential adjustments to the current monitoring program.


REFERENCES

  1. Arnold JFA. Grand Rapids fluoridation study. Results pertaining tothe eleventh year of fluoridation. Am J Public Health Nations Health.1957;47(5):539-45. https://doi.org/10.2105/ajph.47.5.539

  2. Marthaler TM. Salt fluoridation and oral health. Acta Med Acad.2013;42(2):140-55. https://doi.org/10.5644/ama2006-124.82

  3. Tóth K. A study of 8 years’ domestic salt fluoridation for preventionof caries. Comm Dent Oral Epidemiol. 1976;4(3):106-10. https://doi.org/10.1111/j.1600-0528.1976.tb02108.x

  4. Radnai M, Fazekas A. Caries prevalence in adults seven years afterprevious exposure to fluoride in domestic salt. Acta Med Dent Helv.1999;4:163-6.

  5. Tramini P. Salt fluoridation in France since 1986. Schweiz MonatsschrZahnmed. 2005;115(8):656-8 [cited March 1, 2024]. Available from: https://pubmed.ncbi.nlm.nih.gov/16156166/

  6. Estupiñán-Day S. Promoting oral health: the use of salt fluoridation toprevent dental caries. Washington DC: OPS, 2005 [cited March 1, 2024].Available from: https://iris.paho.org/handle/10665.2/736

  7. Gillespie GM, Baez R. Development of salt fluoridation in the Americas.Schwiz Monotsschr Zahnmed. 2005;115(8):663-9 [cited March 1, 2024].Available from: https://pubmed.ncbi.nlm.nih.gov/16156168/

  8. Diario Oficial de la Federación. Reglamento de Yodatación y Fluoruraciónde la Sal. Mexico: SS, 1981 [cited March 1, 2024]. Available from:https://www.dof.gob.mx/nota_detalle.php?codigo=4633696&fecha=26/03/1981#gsc.tab=0

  9. Diario Oficial de la Federación. Norma Oficial Mexicana NOM-040-SSA1-1993, Bienes y servicios. Sal yodada y sal yodada fluorurada. Especificacionessanitarias. Mexico: SS, 1995 [cited March 1, 2024]. Available from:https://www.dof.gob.mx/nota_detalle.php?codigo=4870719&fecha=13/03/1995#gsc.tab=0

  10. Velázquez-Monroy O, Vera-Hermosillo H, Irigoyen-Camacho ME, Mejía-González A, Sánchez-Pérez TL. Cambios en la prevalencia de la cariesdental en escolares de tres regiones de México: encuestas de 1987-1988y de 1997-1998. Rev Panam Salud Publica. 2003;13(5):320-6. https://doi.org/10.1590/S1020-49892003000400007

  11. Irigoyen ME, Sánchez-Hinojosa G. Changes in dental caries prevalencein 12-year-old students in the State of Mexico after 9 years of salt fluoridation.Caries Res. 2000;34(4):303-7. https://doi.org/10.1159/000016606

  12. Diario Oficial de la Federación. Modificación a la Norma Oficial MexicanaNOM-040-SSA1-1993, Productos y servicios. Sal yodada y sal yodadafluorurada. Especificaciones sanitarias. Mexico: SS, 2003 [cited March 1,2024]. Available from: https://www.dof.gob.mx/nota_detalle.php?codigo=708109&fecha=23/09/2003#gsc.tab=0

  13. Gobierno de México. Sal yodada fluorurada. Mexico: Cofepris, 2017[cited March 1, 2024]. Available from: https://www.gob.mx/cofepris/acciones-y-programas/sal-yodada-fluorurada

  14. Maupomé-Carvantes G, Jaramillo-Lanchero RD, Andrade-DelgadoLC, Juárez-Reyes PL, López-Pérez R, Sánchez-Navarro W, et al. Fluoridecontent of table salt in Mexico City. Bol Oficina Sanit Panam.1995;119(3):195-201 [cited March 1, 2024]. Available from: https://pubmed.ncbi.nlm.nih.gov/7576186/

  15. Hernández-Guerrero JC, de la Fuente-Hernández J, Jiménez-FarfánMD, Ledesma-Montes C, Castañeda-Castaneira NMF, Jacinto-Alemán LF,et al. Fluoride content in table salt distributed in Mexico City, Mexico. JPublic Health Dentistry. 2008;68(4):242-5. https://doi.org/10.1111/j.1752-7325.2008.00084.x

  16. Martínez-Mier EA, Soto-Rojas AE, Buckley CM, Zero DT, MarginedaJ. Fluoride concentration of bottled water, tap water, and fluoridated saltfrom two communities in Mexico. Int Dent J. 2005;55(2):93-9. https://doi.org/10.1111/j.1875-595x.2005.tb00040.x

  17. Yengopal V, Chikte UME, Mickenautsch S, Oliveira LB, Bhayat A. Saltfluoridation: a meta-analysis of its efficacy for caries prevention. SADJ.2010;65(2):60-7.

  18. Bashash M, Marchand M, Hu H, Till C, Martinez-Mier EA, Sanchez BN, etal. Prenatal fluoride exposure and attention deficit hyperactivity disorder(ADHD) symptoms in children at 6-12 years of age in Mexico City. EnvironInt. 2018;121(p 1):658-66. https://doi.org/10.1016/j.envint.2018.09.017

  19. Bashash M, Thomas D, Hu H, Martinez-Mier EA, Sanchez BN, Basu N, etal. Prenatal fluoride exposure and cognitive outcomes in children at 4 and6-12 years of age in Mexico. Environ Health Perspect. 2017;125(9):097017.https://doi.org/10.1289/EHP655

  20. Goodman CV, Bashash M, Green R, Song P, Peterson KE, Schnaas L, etal. Domain-specific effects of prenatal fluoride exposure on child IQ at 4,5, and 6-12 years in the Element cohort. Environ Res. 2022;211:112993.https://doi.org/10.1016/j.envres.2022.112993

  21. Cantoral A, Téllez-Rojo MM, Malin AJ, Schnaas L, Osorio-ValenciaE, Mercado A, et al. Dietary fluoride intake during pregnancy andneurodevelopment in toddlers: a prospective study in the progresscohort. Neurotoxicology. 2021;87:86-93. https://doi.org/10.1016/j.neuro.2021.08.015

  22. Veneri F, Vinceti M, Generali L, Giannone ME, Mazzoleni E, BirnbaumLS, et al. Fluoride exposure and cognitive neurodevelopment: systematicreview and dose-response meta-analysis. Environ Res. 2023;221:115239.https://doi.org/10.1016/j.envres.2023.115239

  23. Perng W, Tamayo-Ortiz M, Tang L, Sánchez BN, Cantoral A, Meeker JD,et al. Early life exposure in Mexico to environmental toxicants (Element)project. BMJ Open. 2019;9(8):e030427. https://doi.org/10.1136/bmjopen-2019-030427

  24. Martínez-Mier EA, Cury JA, Heilman JR, Katz BP, Levy SM, Li Y,et al. Development of gold standard ion-selective electrode-basedmethods for fluoride analysis. Caries Res. 2011;45(1):3-12. https://doi.org/10.1159/000321657

  25. Martínez-Mier EA, Soto-Rojas AE, Buckley CM, Margineda J, Zero DT.Evaluation of the direct and diffusion methods for the determinationof fluoride content in table salt. Comm Dent Health. 2009;26(4):204-10 [cited March 1, 2024]. Available from: https://pubmed.ncbi.nlm.nih.gov/20088217

  26. R Core Team. R: a language and environment for statistical computing.Vienna: R Foundation for Statistical Computing [cited March 1, 2024].Available from: https://www.R-project.org/

  27. Secretaría de Salud. Resultados del Sistema de Vigilancia Epidemiológicade Patologías Bucales SIVEPAB 2021. Mexico: SS, 2021 [cited March1, 2024]. Available from: https://www.gob.mx/cms/uploads/attachment/file/848162/RESULTADOSDELSIVEPAB2021.pdf

  28. Hernández-Guerrero JC, Ledesma-Montes C, Cardiel-Nieves M,Jiménez-Farfán D. Fluoride levels in Mexico City’s water supplies. R IntCont Ambiental. 2005;21(1):17-22 [cited March 1, 2024]. Available from:https://www.redalyc.org/articulo.oa?id=37021102

  29. Galicia-Chacón L, Molina-Frechero N, Oropeza-Oropeza A, Gaona E,Juárez-López L. Análisis de la concentración de fluoruro en agua potablede la delegación Tláhuac, Ciudad de México. Rev Int Cont Ambiental.2011;27(4):283-9 [cited March 1, 2024]. Available from: https://www.revistascca.unam.mx/rica/index.php/rica/article/view/28236

  30. Cantoral A, Luna-Villa LC, Mantilla-Rodriguez AA, Mercado A, LippertF, Liu Y, et al. Fluoride content in foods and beverages from Mexico Citymarkets and supermarkets. Food Nutr Bull. 2019;40(4):514-31. https://doi.org/10.1177/0379572119858486

  31. Martínez-Mier EA, Soto-Rojas AE, Ureña-Cirett JL, Stookey GK, DunipaceAJ. Fluoride intake from foods, beverages and dentifrice by childrenin Mexico. Comm Dent Oral Epidemiol. 2003;31(3):221-30. https://doi.org/10.1034/j.1600-0528.2003.00043.x

  32. Dall’Onder AP, Fager AF, Alvarez-Loureiro A, Hashizume LN.Fluoride concentration in household salt marketed in Montevideo,Uruguay. Odontoestomatol. 2021;23(38):e213. https://doi.org/10.22592/ode2021n37e213

  33. Götzfried F. Production of fluoridated salt. Schweiz Monatsschr Zahnmed.2006;116(4):367-70 [cited March 1, 2024]. Available from: https://pubmed.ncbi.nlm.nih.gov/16708522/

  34. Marthaler TM, Petersen PE. Salt fluoridation--an alternative in automaticprevention of dental caries. Int Dent J. 2005;55(6):351-8. https://doi.org/10.1111/j.1875-595x.2005.tb00045.x

  35. Campos-Nonato I, Vargas-Meza J, Barquera S. Consumo de sal/sodioen México y experiencias en Latinoamérica. Mexico: Instituto Nacionalde Salud Pública, 2022 [cited March 1, 2024]. Available from: https://insp.mx/resources/images/stories/2022/docs/220317_Consumo_de_sal_sodio_Mexico.pdf




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