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. 2021 Jul;31(4):475-482.
doi: 10.1111/ipd.12728. Epub 2020 Sep 30.

Molar-incisor hypomineralization (MIH), dental fluorosis, and caries in rural areas with different fluoride levels in the drinking water

Igor Cartaxo Fernandes  1 , Franklin Delano Soares Forte  1 , Fábio Correia Sampaio  1
Affiliations

Molar-incisor hypomineralization (MIH), dental fluorosis, and caries in rural areas with different fluoride levels in the drinking water

Igor Cartaxo Fernandes et al. Int J Paediatr Dent. 2021 Jul.

Abstract

Aim: This study determined the prevalence of molar-incisor hypomineralization (MIH) and its association with dental fluorosis and caries in children living in rural areas in north-eastern Brazil who are exposed to residual fluoride (F) levels in the drinking water.

Design: A census was carried out with 610 schoolchildren aged 6 to 12 years. The European Academy of Paediatric Dentistry criteria, Thysltrup and Fejerskov index, and World Health Organization index were used for diagnosis of MIH, dental fluorosis, and caries detection, respectively. The association between the outcome and exposure variables was determined by robust Poisson regression (P < .05).

Results: Water F-levels varied from 0.06 to 1.98 ppm. MIH was not related to fluoride levels in the drinking water, but it showed an inverse and direct correlation with dental caries and fluorosis, respectively. Children with MIH had a higher DMFT, and severe MIH cases were most frequent in children with dental fluorosis.

Conclusion: Drinking water F-levels were not directly related to the occurrence of MIH in schoolchildren. The severity of MIH, however, was likely to be associated with dental fluorosis in areas with moderate to high fluoride levels in the drinking water.

Keywords: dental caries; dental fluorosis; molar-incisor hypomineralization; rural water supply; schoolchildren.

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References

REFERENCES

    1. Zhao D, Dong B, Yu D, Ren Q, Sun Y. The prevalence of molar incisor hypomineralization: evidence from 70 studies. Int J Paediatr Dent. 2018;28(2):170-179.
    1. Weerheijm KL, Duggal M, Mejàre I, et al. Judgement criteria for molar incisor hypomineralisation (MIH) in epidemiologic studies: a summary of the European meeting on MIH held in Athens. Eur J Paediatr Dent. 2003;4:110-113.
    1. Lygidakis NA, Wong F, Jalevik B, Vierrou AM, Alaluusua S, Espelid I. Best clinical practice guidance for clinicians dealing with children presenting with molar-incisor-hypomineralisation (MIH): an EAPD policy document. Eur Arch Paediatr Dent. 2010;11:75-81.
    1. Wuollet E, Laisi S, Salmela E, Ess A, Alaluusua S. Background factors of molar-incisor hypomineralization in a group of Finnish children. Acta Odontol Scand. 2014;72(8):963-969.
    1. Almuallem Z, Busuttil-Naudi A. Molar incisor hypomineralisation (MIH) - an overview. Br Dent J. 2018;225(7):601-609.

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