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Oral Health and Preventive Dentistry
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Oral Health Prev Dent 17 (2019), No. 4     16. Aug. 2019
Oral Health Prev Dent 17 (2019), No. 4  (16.08.2019)

Page 323-327, doi:10.3290/j.ohpd.a42725, PubMed:31225537


Prevalence of Molar-Incisor Hypomineralisation in an Emerging Community, and a Possible Correlation with Caries, Fluorosis and Socioeconomic Status
Ahmad, Somayeh H. / Petrou, Marina Agathi / Alhumrani, Azza / Hashim, Raghad / Splieth, Christian
Purpose: To determine the prevalence of molar-incisor hypomineralisation (MIH) in 7- to 9-year-old (±1 year) schoolchildren living in Dubai, United Arab Emirates, and to find a possible association with caries, fluorosis and socioeconomic status.
Materials and Methods: In this cross-sectional study, a representative sample of 779 children with an age of 7 to 9 years ±1 year in primary schools in Dubai were randomly selected and examined by one investigator who had previously been trained and calibrated with the diagnostic criteria of European Academy of Paediatric Dentistry (EAPD) for MIH, caries diagnostic criteria of the World Health Organization (WHO) and Dean's criteria for fluorosis.
Results: The prevalence of MIH in Dubai was 7.57% and was almost identical for both genders (female 7.57% and male 7.58%). The caries index was high (2.41±1.7). Children with MIH in Dubai exhibited statistically significantly higher DMFT values than did children without MIH (mean 3.5 ± 1.7 vs 2.3 ± 1.7; p < 0.001). The prevalence of fluorosis was 10.9% with no statistically significant age or gender differences.
Conclusion: The prevalence of MIH in Dubai is low. However, the caries and fluorosis values are much higher, which calls for strengthening caries-preventive efforts.

Keywords: caries, fluorosis, molar-incisor hypomineralisation, socioeconomic status