Dental caries experience and Molar-Incisor Hypomineralization.
OBJECTIVE
This cross-sectional study assessed the prevalence and severity of the enamel defects, known as Molar-Incisor Hypomineralization (MIH) and its relationship to dental caries.


METHODS
A sample of 1157 schoolchildren (population based), aged 6-12 years, of the Araraquara city-Brazil, was evaluated according to the European Academy of Paediatric Dentistry (EAPD) criteria by two trained examiners. The dental impact caused by MIH was evaluated with the Decayed, Missing and Filled Teeth (DMFT) index (WHO). Data were analyzed using ANOVA and Chi-square tests (p < 0.05). The socioeconomic status was collected using a questionnaire answered by parents.


RESULTS
The prevalence of MIH was 12.3%. Mild impairment was the most frequent diagnosis. DMFT of children with MIH was 0.89 (± 1.18), which are higher than those of the unaffected group (0.43 ± 1.01). An association was found between dental caries only in the permanent dentition of children with MIH (p = 0.0001). Family income was considered low in 85% of the families of children with MIH in the public system, while in private school it was 18% (p < 0.05).


CONCLUSIONS
The prevalence of MIH in Araraquara was associated with greater caries experience in the permanent dentition.
Pediatric Dentistry and Orthodontics Department, Araraquara School of Dentistry, UNESP - Univ Estadual Paulista, São Paulo, Brazil.
Fabiano
F
Jeremias
Juliana Feltrin
JF
de Souza
Cristiane Maria da Costa
CM
Silva
Rita de Cássia Loiola
Rde C
Cordeiro
Angela Cristina Cilense
AC
Zuanon
Lourdes
L
Santos-Pinto
D001938:Brazil; D002648:Child; D003430:Cross-Sectional Studies; D003731:Dental Caries / Q000453:epidemiology* / Q000503:physiopathology; D003744:Dental Enamel Hypoplasia / Q000453:epidemiology* / Q000503:physiopathology; D006801:Humans; D015995:Prevalence