Krishnan R, Ramesh M, Chalakkal P. Prevalence and characteristics of MIH in school children residing in an endemic fluorosis area of India: an epidemiological study.
Eur Arch Paediatr Dent 2015;
16:455-60. [PMID:
26349480 DOI:
10.1007/s40368-015-0194-8]
[Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 06/19/2015] [Indexed: 12/01/2022]
Abstract
AIM
This was to study the prevalence of molar incisor hypomineralisation (MIH) among school children residing in a fluorosis endemic area in Tamilnadu (Salem, India).
METHODS
A target sample of 5000 children of age ranging between 9 and 14 years, comprising 250 children from each of 20 blocks of Salem, participated in this study. The examination was completed in their respective schools by a calibrated examiner using EAPD criteria.
RESULTS
Of 4989 children examined, 384 children had MIH. A prevalence of 7.3 %. The MIH found in girls was 8.9 % compared with 6.1 % in boys. Single-tooth involvement of MIH was seen predominantly in incisors (2.24 %), whereas with molars usually three teeth were involved (1.1 %). MIH with caries involvement was found in 51 % of the teeth.
CONCLUSION
The prevalence of MIH in the endemic fluorosis district was found to be 7.3 %. A gradual increase in MIH was seen with age due to post enamel breakdown. Caries involvement was also seen in more than 50 % of the MIH-involved teeth. This prevalence study for molar incisor hypomineralisation (MIH) is rare in the literature, especially in a fluorosis endemic district in Tamilnadu.
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