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Molar Incisor Hypomineralization: A Study of Prevalence and Etiology in a Group of Iranian Children

AUTHORS

Rahmatollah Nourinasab 1 , Nahid Ramazani 2 , Rahil Ahmadi 3 , *

1 Zahedan University of Medical Sciences, Zaheadn, Iran

2 Pediatric Dentistry Department, Dental School, Zahedan University of Medical Sciences, Zaheadn & Children and Adolescents Health Research Center, Zahedan University of Medical Sciences, Zaheadn, Iran

3 Pediatric Dentistry Department, Dental School, Shahed University, Tehran, Iran

How to Cite: Nourinasab R, Ramazani N, Ahmadi R . Molar Incisor Hypomineralization: A Study of Prevalence and Etiology in a Group of Iranian Children, Iran J Pediatr. 2015 ; 22(2):245-251.

ARTICLE INFORMATION

Iranian Journal of Pediatrics: 22 (2); 245-251
Published Online: June 30, 2012
Article Type: Research Article
Received: May 13, 2011
Accepted: January 27, 2012

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Abstract

Objective: The aim of this study was to investigate the prevalence of molar incisor hypomineralization (MIH) and its relationship with systemic conditions in a group of Iranian children.
Methods: The study population comprised of 433 7-9 year olds, from four schools in Zahedan, Iran. Subjects were evaluated clinically by one examiner, and at a separate session, their mothers completed a coded medical history questionnaire. Hypo-mineralized molars and incisors were recorded based on DDE (developmental defects of enamel) index and DMFT (number of decayed, filled and missing teeth) was determined. Statistical analyses were performed using Chi-square and independent sample t-tests.
Findings: Fifty-five (12.7%) children showed MIH. The overall mean number of affected teeth was 0.2. The mean value of DMFT in MIH children was greater than in normal children. Demarcated opacities were the most frequent (76%) enamel defect. Mother’s and child’s medical problems during prenatal, perinatal and post natal period were significantly remarkable in MIH children.
Conclusion: The prevalence of MIH in a group of Iranian children was 12.7%. Prenatal, perinatal and post natal medical conditions were more prevalent in children affected by MIH.

 

Keywords

Developmental Enamel Defects Molar Incisor Hypomineralization Hypoplasia

© 0, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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