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Molar Incisor Hypomineralisation: Possible aetiological factors in children from urban and rural areas

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Abstract

AIM: To analyse factors potentially associated with molar incisor hypomineralisation (MIH) development. METHODS: A population-based study was carried out with 903 children aged from 6–12 years old, born and residing in rural and urban areas of the town of Botelhos, State of Minas Gerais, Brazil. Their mothers completed a structured medical history questionnaire, from pregnancy to the child’s 3rd year of life. Two examiners evaluated children for MIH according to criteria suggested by the European Academy of Paediatric Dentistry. Descriptive analyses of the data and odds ratios (OR) with 95% test-based confidence intervals (CI) were estimated. Chi-square test was used to evaluate the differences between groups. RESULTS: The prevalence of MIH in children from rural area (RA) was significantly higher than those from the urban area (UA) (24.9% versus 17.8%, p= 0.01). In urban children, neither significant associations with MIH nor medical problems were found. In rural children, however, MIH was significantly more common among those whose mothers had experienced medical problems during pregnancy (OR=2.11; 1.0124.37 CI 95%; p=0.04), who had throat infections (OR=2.93; 1.47.87 CI 95%; p=0.01), who had high fever (OR=1.91; 1.07.39 CI 95%; p=0.02), and who had used amoxicillin associated with other antibiotics (OR=1.92; 1.02.62 CI 95%; p=0.04) during the first 3 years of life. CONCLUSION: This study suggests a link between MIH and health problems during pregnancy, as well as environmental factors.

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Authors and Affiliations

  1. Paediatric Dentistry and Orthodontics Department, Araraquara School of Dentistry, UNESP-Univ Estadual Paulista, Rua Humaitá 1680, Araraquara, São Paulo, Brazil, 14801-903

    J. F. Souza, F. Jeremias, L. Santos-Pinto, A. C. C. Zuanon &  R. C. L. Cordeiro

  2. University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil

    C. M. Costa-Silva

Authors
  1. J. F. Souza
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  2. C. M. Costa-Silva
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  3. F. Jeremias
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  4. L. Santos-Pinto
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  5. A. C. C. Zuanon
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  6. R. C. L. Cordeiro
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Correspondence to R. C. L. Cordeiro.

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Souza, J.F., Costa-Silva, C.M., Jeremias, F. et al. Molar Incisor Hypomineralisation: Possible aetiological factors in children from urban and rural areas. Eur Arch Paediatr Dent 13, 164–170 (2012). https://doi.org/10.1007/BF03262865

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