ArticleInternational journal of dentistry2026
Distribution and Clinical Characteristics of MIH in Schoolchildren From the Central Peruvian Jungle: A Cross‑Sectional Study.
Article in International journal of dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Distribution and Clinical Characteristics of MIH in Schoolchildren From the Central Peruvian Jungle: A Cross‑Sectional Study.International journal of dentistry · 2026Article
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6 authors.
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Abstract
Background: Molar incisor hypomineralisation (MIH) is a developmental enamel defect that predominantly affects first permanent molars and frequently involves incisors. However, evidence on MIH prevalence and clinical presentation in jungle regions is limited. Aim: To determine the distribution and clinical patterns of MIH among schoolchildren in the Central Jungle region of Peru. Materials and Methods: This cross-sectional study included 1500 schoolchildren aged 6-12 years from two public schools in Peru's Central Jungle region, recruited through stratified random sampling. Two calibrated examiners diagnosed MIH using European Academy of Paediatric Dentistry (EAPD) criteria (inter-examiner Results: MIH prevalence was 18.8% (95% CI: [17.0-20.0]). First permanent molars were predominantly affected (upper: 84.8%, 285/336; lower: 90.9%, 288/317) compared to incisors. Pattern I distribution occurred in 78.7% of cases, while patterns II/III (21.3%) showed significant male predominance ( Conclusion: MIH prevalence was 18.8% among schoolchildren in Peru's Central Jungle region. First permanent molars were predominantly affected (upper: 84.8%; lower: 90.9%) compared to incisors. Pattern I distribution occurred in 78.7% of cases, while patterns II/III (21.3%) showed significant male predominance. Molars exhibited greater clinical severity with white-cream opacities, Type III lesions, and higher rates of post-eruptive breakdown and atypical caries, whereas incisors presented mainly mild demarcated opacities.
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