Abstract
Purpose
Data about molar-incisor hypomineralization (MIH) prevalence and its severity remains limited for some Latin American countries. Furthermore, its association with socioeconomic status (SES) is still unclear. Thus, this study aims to determine the prevalence and severity of MIH in Santiago, Chile and explore its association with SES.
Methods
A cross-sectional study with schoolchildren between 6 and 12 years was conducted. Children were evaluated using the European Academy of Paediatric Dentistry to diagnose MIH, and the Mathu-Muju and Wright criteria to determine its severity.
Results
A total of 1,270 children were included. The MIH prevalence was 12.8% without association with gender (p = 0.609). Prevalence was higher among schoolchildren ages 8 and 9 (p = 0.002), and in lower SES (p = 0.007). MIH mild cases were the most prevalent (63%), and severity was not related to gender (p = 0.656), age (p = 0.060), or SES (p = 0.174).
Conclusions
The prevalence of MIH in the province of Santiago, Chile is 12.8% and was found to have a higher incidence in 8–9-year-old students and among those categorized by low SES. Furthermore, MIH prevalence was associated with low SES.
Implications
Public health policies to address MIH in Chile should start with schoolchildren aged 8 to 9, and with low SES.
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Data availability
The data that support the findings of this study are available from the corresponding author, MCF, upon reasonable request.
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Acknowledgements
The authors wish to thank Camila Corral and Cristian Bersezio for their support in the development of this project. The authors also wish to thank Ariana Chirban for her valuable comments on the manuscript.
Funding
This study was founded by Fonis Conicyt SA14ID0056 National Fund for Health Research, Ministry of Health, Chilean Government.
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Dominique Harz, has no relevant financial or non-financial interests to disclose. Braulio Catalán Gamonal has no relevant financial or non-financial interests to disclose. Stephanie Matute García has no relevant financial or non-financial interests to disclose. Fabiano Jeremias has no relevant financial or non-financial interests to disclose. Javier Martin has no relevant financial or non-financial interests to disclose. Maria C. Fresno has no relevant financial or non-financial interests to disclose.
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This study was approved by the Dental School of the Universidad de Chile’s ethics committee (Approval Act number N° 9, date November 20th, 2014).
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Harz, D., Catalán Gamonal, B., Matute García, S. et al. Prevalence and severity of molar-incisor hypomineralization, is there an association with socioeconomic status? A cross-sectional study in Chilean schoolchildren. Eur Arch Paediatr Dent 24, 577–584 (2023). https://doi.org/10.1007/s40368-023-00820-3
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DOI: https://doi.org/10.1007/s40368-023-00820-3