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Molar Incisor Hypomineralization and Dental Caries in Six- to Seven-year-old Thai Children

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Purpose: This study aimed to determine the prevalence of molar incisor hypomineralization (MIH) in Thai children and evaluate the association between MIH and dental caries in the permanent dentition. Methods: A cross-sectional study was conducted among six- to seven-year-old participants of a birth cohort study in Khon Kaen, Thailand. MIH was examined by one calibrated dentist using European Academy of Pediatric Dentistry criteria. The association between MIH and caries was determined by logistic regression at subject level, and generalized estimating equations at tooth level. Results: Of 484 children who had at least one erupted permanent first molar, the prevalence of MIH was 20 percent, with no difference between genders. Children with MIH had increased odds of having caries in the permanent dentition compared to those without MIH (odds ratio [OR] equals 4.6; 95 percent confidence interval [CI] equals 2.7 to 7.9). MIH molars had approximately 10 times higher odds of developing caries than non-MIH counterparts (OR equals 9.9; 95 percent CI equals 5.7 to 16.9). Caries risk was higher in the upper molars than in the lower molars. Conclusions: Molar incisor hypomineralization is common and associated with increased risk for dental caries among this group of Thai children.
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Document Type: Research Article

Affiliations: 1: Department of Community Dentistry, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand. [email protected] 2: Dental Health Division, Samsoong Hospital, Khon Kaen, Thailand 3: Department of Community Dentistry, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand 4: Department of Oral Diagnostic Sciences, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand

Publication date: November 1, 2014

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  • Pediatric Dentistry is the official publication of the American Academy of Pediatric Dentistry, the American Board of Pediatric Dentistry and the College of Diplomates of the American Board of Pediatric Dentistry. It is published bi-monthly and is internationally recognized as the leading journal in the area of pediatric dentistry. The journal promotes the practice, education and research specifically related to the specialty of pediatric dentistry. This peer-reviewed journal features scientific articles, case reports and abstracts of current pediatric dental research.
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