Does bottled drinking water have anti-dental caries properties? A Systematic review and meta-analysis

Document Type : Review Article(s)

Authors

1 Assistant Professor, Department of Community Oral Health, School of Dentistry , Mashhad University of Medical Sciences, Mashhad, Iran

2 Associate Professor, Social Determinants on Oral Health Research AND Department of Dental Public Health, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran

3 DDS, Social Determinants on Oral Health Research and Department of Dental Public Health, Kerman University of Medical Sciences, Kerman, Iran

4 PhD Student, Department of Dental Biomaterials, School of Dentistry AND Research Center for Science and Technology, Tehran University of Medical Sciences, Tehran, Iran

5 Assistant Professor, Social Determinants on Oral Health Research AND Department of Dental Public Health, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran

Abstract

BACKGROUND AND AIM: The growing consumption of bottled water has raised concerns about its quality. The optimal concentration of trace elements such as fluoride in drinking water is of significance for public health. Water with the optimal fluoride concentration is considered one of the most cost-effective ways to prevent dental caries in communities. The aim of the present study was to conduct a systematic review and meta-analysis of studies on fluoride content of bottled water.
METHODS: In this study, medical and non-medical databases were searched using a comprehensive and sensitive search strategy. Retrieved citations were imported into an Endnote library. The quality of the studies was checked using the Joanna Briggs Institute (JBI) checklist. The data extracted from the studies included country, reported fluoride concentration level in bottled and tap water, the region of sampling, fluoride determination method, number of assessed brands, and study year. The data were analyzed using random-fixed effects and meta-regression methods in Stata software.
RESULTS: A total of 32 papers from 16 countries were included in the review. Half of the studies compared the laboratory-determined content to the label-claimed fluoride content. The results of the meta-analysis showed high heterogeneity in the investigated papers.
CONCLUSION: The fluoride content of bottled water had significant discrepancies with the optimal level. The contradiction between the label-claimed fluoride content and that determined after accurate testing was a prevalent finding. The existing legislation does not effectively guarantee the accurate labeling of fluoride content and more rigorous supervision is required.

Keywords


  1. Kamerow D. Bottled water for all, all the time? BMJ 2016; 352: i1214.
  2. Sriraman NK, Patrick PA, Hutton K, Edwards KS. Children's drinking water: parental preferences and implications for fluoride exposure. Pediatr Dent 2009; 31(4): 310-5.
  3. Ferrier C. Bottled water: Understanding a social phenomenon. AMBIO A Journal of the Human Environment 2001; 30(2): 118-9.
  4. The Business Research Company. The Global Bottled Water Market: Expert Insights and Statistics [Online]. [cited 2018 Feb 28]; Available from: URL: https://blog.marketresearch.com/the-global-bottled-water-market-expert-insights-statistics
  5. Vieux F, Maillot M, Rehm CD, Barrios P, Drewnowski A. Trends in tap and bottled water consumption among children and adults in the United States: analyses of NHANES 2011-16 data. Nutr J 2020; 19(1): 10.
  6. Villena RS, Borges DG, Cury JA. Evaluation of fluoride content of bottled drinking waters in Brazil. Rev Saude Publica 1996; 30(6): 512-8. [In Portuguese].
  7. Newbrun E. Effectiveness of water fluoridation. J Public Health Dent 1989; 49(5 Spec No): 279-89.
  8. Daly B, Batchelor P, Treasure E, Watt R. Essential dental public Health. Oxford, UK: Oxford University Press; 2013.
  9. Murthy VH. Surgeon general's perspectives. Public Health Rep 2015; 130(4): 296-8.
  10. Susheela AK, Kumar A, Bhatnagar M, Bahudur R. Prevalence of endemic fluorosis with gastro-intestinal manifestations in people living in some North-Indian villages. Fluoride 1993; 26(2): 97-104.
  11. Eslami A, Jamali H, Naderi S. Comparative study of bottled water microbial and physicochemical quality with national standards and its label (A case study in Qazvin City, Iran). Iran J Health Environ 2013; 6(2): 155-66. [In Persian].
  12. Amanlou M, Hosseinpour M, Azizian H, Khoshayand MR, Navabpoor M, Souri E. Determination of fluoride in the bottled drinking waters in Iran. Iran J Pharm Res 2010; 9(1): 37-42.
  13. Moazeni M, Atefi M, Ebrahimi A, Razmjoo P, Vahid DM. Evaluation of chemical and microbiological quality in 21 brands of Iranian bottled drinking waters in 2012: A comparison study on label and real contents. J Environ Public Health 2013; 2013: 469590.
  14. Lalumandier JA, Ayers LW. Fluoride and bacterial content of bottled water vs tap water. Arch Fam Med 2000; 9(3): 246-50.
  15. Dhingra S, Marya CM, Jnaneswar A, Kumar H. Fluoride concentration in community water and bottled drinking water: A dilemma today. Kathmandu Univ Med J (KUMJ) 2013; 11(42): 117-20.
  16. Thippeswamy HM, Kumar N, Anand SR, Prashant GM, Chandu GN. Fluoride content in bottled drinking waters, carbonated soft drinks and fruit juices in Davangere city, India. Indian J Dent Res 2010; 21(4): 528-30.
  17. Venturini C, Frazao P. Fluoride concentration in bottled water: A systematic review. Cad Saúde Colet 2015; 23(4): 460-7.
  18. The Joanna Briggs Institute. The Joanna Briggs Institute Reviewers' Manual 2014: The Systematic Review of Economic Evaluation Evidence. Adelaide, South Australia: The Joanna Briggs Institute; 2014.
  19. Arai L, Britten N, Popay J, Roberts H, Petticrew M, Rodgers M, et al. Testing methodological developments in the conduct of narrative synthesis: A demonstration review of research on the implementation of smoke alarm interventions. Evidence and Policy 2007; 3(3): 361-83.
  20. Poureslami HR, Khazaeli P, Masoudpour H. Fluoride content of drinking waters in Kerman/Iran. J Kerman Univ Med Sci 2008; 15(3): 235-42. [In Persian].
  21. Hardisson A, Rodriguez MI, Burgos A, Flores LD, Gutierrez R, Varela H. Fluoride levels in publicly supplied and bottled drinking water in the Island of Tenerife, Spain. Bull Environ Contam Toxicol 2001; 67(2): 163-70.
  22. Mythri H, Chandu GN, Prashant GM, Subba Reddy VV. Fluoride and bacterial content of bottled drinking water versus municipal tap water. Indian J Dent Res 2010; 21(4): 515-7.
  23. Cochrane NJ, Saranathan S, Morgan MV, Dashper SG. Fluoride content of still bottled water in Australia. Aust Dent J 2006; 51(3): 242-4.
  24. Rao KY, Anjum MS, Reddy PP, Monica M, Hameed IA, Sagar GV. Physico-chemical and bacterial evaluation of public and packaged drinking water in Vikarabad, Telangana, India - Potential public health implications. J Clin Diagn Res 2016; 10(5): LC01-LC07.
  25. Marthaler TM, Petersen PE. Salt fluoridation--an alternative in automatic prevention of dental caries. Int Dent J 2005; 55(6): 351-8.
  26. International Food Standard. CODEX Alimentarius. Standard for Natural Mineral Waters. CXS 108-1981 [Online]. Available from: URL: https://www.fao.org/fao-who-codexalimentarius/sh-proxy/es/?lnk=1&url=https%253A%252F%252Fworkspace.fao.org%252Fsites%252Fcodex%252FStandards%252FCXS%2B108-1981%252FCXS_108e.pdf
  27. Keramati H, Miri A, Baghaei M, Rahimizadeh A, Ghorbani R, Fakhri Y, et al. Fluoride in Iranian drinking water resources: A systematic review, meta-analysis and non-carcinogenic risk assessment. Biol Trace Elem Res 2019; 188(2): 261-73.
  28. Bengharez Z, Farch S, Bendahmane M, Haouaria M, Mohamed B. Evaluation of fluoride bottled water and its incidence in fluoride endemic and non-endemic areas. e-SPEN Journal 2012; 7(1): e41-5.
  29. Allen HE, Halley-Henderson MA, Hass CN. Chemical composition of bottled mineral water. Arch Environ Health 1989; 44(2): 102-16.
  30. Johnson SA, DeBiase C. Concentration levels of fluoride in bottled drinking water. J Dent Hyg 2003; 77(3): 161-7.
  31. Mills K, Falconer S, Cook C. Fluoride in still bottled water in Australia. Aust Dent J 2010; 55(4): 411-6.
  32. Weinberger SJ. Bottled drinking waters: Are the fluoride concentrations shown on the labels accurate? Int J Paediatr Dent 1991; 1(3): 143-6.
  33. Ibrahim HZ, Mohammed HA, Hafez AM. Physicochemical properties of some bottled water brands in Alexandria Governorate, Egypt. J Egypt Public Health Assoc 2014; 89(2): 60-5.
  34. Mahajan RK, Walia TP, Lark BS, Sumanjit. Analysis of physical and chemical parameters of bottled drinking water. Int J Environ Health Res 2006; 16(2): 89-98.
  35. Somasundaram S, Ravi K, Rajapandian K, Gurunathan D. Fluoride content of bottled drinking water in Chennai, Tamilnadu. J Clin Diagn Res 2015; 9(10): ZC32-ZC34.
  36. Dobaradaran S, Mahvi AH, Dehdashti S. Fluoride content of bottled drinking water available in Iran. Fluoride 2008; 41(1): 93-4.
  37. Rezaei S, Raygan Shirazi AR, Fararoei M, Jamshidi A, Sadat Am. Evaluation of the chemical and microbial quality of bottled waters distributed in Yasouj, 2008. Armaghane-danesh 2011; 16(3): 291-9. [In Persian].
  38. Shams M, Dobaradaran S, Mazloomi S, Afsharnia M, Ghasemi M, Bahreini M, et al. Drinking water in Gonabad, Iran: Fluoride levels in bottled, distribution network, point of use desalinator, and decentralized municipal desalination plant water. Fluoride 2012; 45(2): 138-41.
  39. Nabipour I, Dobaradaran S. Fluoride concentrations of bottled drinking water available in Bushehr, Iran. Fluoride 2013; 46(2): 63-4.
  40. Fouladi-Fard R, Mahvi A, Hosseini SS, Khazaei M. Fluoride concentrations in bottled drinking water available in Najaf and Karbala, Iraq. Fluoride 2020; 47(3): 249-52.
  41. Hurtado R, Gardea-Torresdey J. Environmental evaluation of fluoride in drinking water at "Los Altos de Jalisco," in the central Mexico region. J Toxicol Environ Health A 2004; 67(20-22): 1741-53.
  42. Ajayi AA, Sridhar MKC, Adekunle Lola V, Oluwande PA. Quality of packaged waters sold in Ibadan, Nigeria. Afr J Biomed Res 2008; 11(3): 251-8.
  43. Ahiropoulos V. Fluoride content of bottled waters available in Northern Greece. Int J Paediatr Dent 2006; 16(2): 111-6.
  44. Opydo-Szymaczek J, Opydo J. Fluoride content of bottled waters recommended for infants and children in Poland. Fluoride 2009; 42(3): 233-6.
  45. Almulla HI, King NM, Alnsour HM, Sajnani AK. Fluoride content of bottled drinking waters in Qatar. Biol Trace Elem Res 2016; 174(2): 471-6.
  46. Khan NB, Chohan AN. Accuracy of bottled drinking water label content. Environ Monit Assess 2010; 166(1-4): 169-76.
  47. Al-Omran AM, El-Maghraby SE, Aly AA, Al-Wabel MI, Al-Asmari ZA, Nadeem ME. Quality assessment of various bottled waters marketed in Saudi Arabia. Environ Monit Assess 2013; 185(8): 6397-406.
  48. Dhanuthai K, Thangpisityotin M. Fluoride content of commercially-available bottled water in Bangkok, Thailand. J Investig Clin Dent 2011; 2(2): 144-7.
  49. Rirattanapong P, Rirattanapong O. Fluoride content of commercially available bottled drinking water in Bangkok, Thailand. Southeast Asian J Trop Med Public Health 2016; 47(5): 1112-6.