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Pediatr Dent. 2015 Nov-Dec;37(7):513-9.

Epidemiologic Study of Molar-incisor Hypomineralization in Schoolchildren in North-eastern Brazil.

Author information

1
Department of Pathology and Dentistry Clinic, School of Dentistry, Federal University of Piauí, Teresina, Piauí, Brazil. mdmlima@gmail.com.
2
Private practice, Teresina, Piauí, Brazil.
3
Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
4
Department of Pathology and Dentistry Clinic, School of Dentistry, Federal University of Piau&iacute, Teresina, Piauí, Brazil.
5
Department of Pathology and Dentistry Clinic, School of Dentistry, Federal University of Piauí, Teresina, Piauí, Brazil.

Abstract

PURPOSE:

To determine the prevalence of molar-incisor hypomineralization (MIH) in children and possible factors associated with this disorder.

METHODS:

This was a cross-sectional observational study of 594 11- to 14-year-olds from Teresina, Piauí, Brazil. The diagnosis of MIH was made based on criteria set by the European Academy of Pediatric Dentistry. To investigate possible associated factors, mothers completed a questionnaire. A descriptive analysis of the data, chi-square, Mann-Whitney, and Fisher tests and Poisson regression (PR) were performed.

RESULTS:

The prevalence of MIH was 18.4 percent (95 percent confidence interval [CI] equals 15.20 to 21.50). The maxillary molars were the teeth most affected by MIH (36.1 percent). MIH patients showed a higher number of mean DMF-T (PR equals 2.18; 95 percent CI equals 1.46 to 2.85) than those not affected by the condition. There was an association between MIH and preterm birth (PR equals 1.76; 95 percent CI equals 1.22 to 2.12) and between MIH and respiratory distress at birth (PR equals 1.83; 95 percent CI equals 1.25 to 2.18).

CONCLUSIONS:

The prevalence of MIH in schoolchildren was 18.4 percent. Those with MIH had a greater mean DMF-T than those without MIH. Preterm birth and respiratory distress were associated with MIH.

PMID:
26883608
[Indexed for MEDLINE]

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