Abstract
Objective: To evaluate the impact of Molar Incisor Hypomineralization (MIH) in the OHRQoL in a group of 8 to 10 year-old Mexican schoolchildren. Study design: A cross-sectional study of 411 8 to 10 year-old schoolchildren selected from public schools in Naucalpan, in the State of Mexico. The presence and severity of MIH was evaluated using the European Academy of Pediatric Dentistry (EAPD) criteria. The OHRQoL was evaluated using the Child Perceptions Questionnaire (CPQ). Poisson regression models were performed for the analysis. Results: The prevalence of MIH in the permanent dentition was 40.4%. High scores were found in the four domains of the CPQ for children with MIH compared to children without MIH (p<0.001). In the Poisson model, a greater negative impact in the four CPQ domains was found for schoolchildren with MIH: oral symptoms [RR=1.75 (CI95% 1.63-1.78)]; functional limitations [RR=2.17 (CI95% 2.01-2.35)]; emotional wellbeing [RR=1.94 (CI95% 1.80-2.08)]; and, social well-being [RR=2.62 (CI95% 2.49-2.77)]. A greater impact on the four CPQ domains were found for children with moderate/severe MIH compared to children without MIH (p<0.001). Conclusion: Children with moderate/severe MIH experienced a greater negative impact on their OHRQoL compared to children without MIH.
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