Prevalence of Molar Incisor Hypomineralisation Among School Children aged 7-12 years in Tunis, Tunisia

Abstract

To evaluate the prevalence and the characteristics of Molar Incisor Hypomineralisation (MIH) in 7-12-year-old children in Tunis, Tunisia. Material and Methods: This study was designed as a crosssectional study, in which school children aged 7 to 12 years were included. A total of 510 children (257 girls and 253 boys) who had their first permanent molar and incisors were evaluated using the 2003 European Academy of Paediatric Dentistry (EAPD) recommendation criteria were examined. Descriptive data analysis and Pearson's chi-squared test were performed (p<0.05). Results: A total of 510 children were included in the study. MIH was present in 35.4 % of our study population. Boys exhibited slightly higher MIH (19,4%) and Post Eruptive Breakdown (PEB) (7,3%) prevalence compared to girls, but the difference was not statistically significant (p=0.07). Moreover, demarcated opacities were more prevalent than PEB. More precisely, the main prevalence without PEB was MIH with white/creamy demarcated opacities, which was more frequent than yellow/brown demarcated opacities (p<0.05). Conclusion: The prevalence of MIH in Tunis was 35.4%, with no difference between girls and boys. The main MIH type prevalence was white/creamy demarcated opacities without PEB.

Incisor Molar Hypomineralization and Quality of Life: A Population-Based Study with Brazilian Schoolchildren

“…is relationship has also been observed in other studies [12,13,34]. e lower the schooling, the greater the chances of presenting inadequate oral health [37,38]. is statement may clarify the association between low schooling and impact on the emotional and social well-being domains of the OHRQoL self-perception questionnaire found in this study.…”

Prevalence and risk factors of molar incisor hypomineralization in the Middle East: A systematic review and meta-analysis

“…(2021) 11 Sudan/Khartoum 2017 Cluster random sample, multischool-based EAPD 2003 8–11 568 114 (20.1) Tunisia Sakly et al. (2020) 35 Tunis 2017 Random sample, school-based EAPD 2003 7–12 510 181 (35.4) Turkey Kusku et al. (2008) 28 Istanbul 2007 Non-random sample, hospital-based Demarcated opacities, Post-eruptive defects, Extensive restorations, Extracted molar due to MIH 7–9 147 22 (14.9) 4.…”

“… 21 , 22 , 23 Seven studies were hospital-based, reporting the frequency rather than the prevalence of MIH. 21 , 22 , 24 , 25 , 26 , 27 , 28 The remaining studies were population-representative and multischool-based, 8 , 9 , 10 , 11 , 23 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 with the exception of two studies conducted in a single school setting 30 , 35 ( Table 1 ).…”

“…(2021) 11 Yes Yes Yes Yes Yes Yes Yes Yes Yes 9 Tunisia Sakly et al. (2020) 35 Yes Yes No Yes No Yes Yes Yes Yes 7 Turkey Kusku et al. (2008) 28 No No No Yes No Yes Yes Yes No 4 Sönmez et al.…”

“…In our review, four studies did not report the sample size calculation or provided an explanation for it. 10 , 26 , 28 , 35 Two of these studies had a sample size of less than 300; therefore, the results may represent the frequency rather than the prevalence of MIH, despite their stated aim. 26 , 28…”