Prevalence, pattern and severity of molar incisor hypomineralisation in 8- to 10-yearold school children in Ile-Ife, Nigeria

Prevalence, pattern and severity of molar incisor hypomineralisation in 8- to 10-yearold school children in Ile-Ife, Nigeria

Author by Dr. Titus Oyedele

Journal/Publisher: Eur Arch Paediatr Dent

Volume/Edition: 40320

Language: English

Pages: 15 - 175

Abstract

 Abstract

Aim This study aimed to determine the prevalence, pattern

and severity of MIH in school children resident in a

suburban population in Nigeria.

Methods This was a cross-sectional study involving

pupils aged 8–10 years resident in suburban Nigeria. Details

of each pupil’s socio-demographic variables were

collected. Intra-oral examination was conducted to determine

the presence of MIH, the affected tooth and the

severity of the lesion. The association between the prevalence

of MIH and socio-demographic variables of each

child was determined. The predictors of MIH were also

determined using a binomial regression analysis.

Result Eighty-three of the 469 children examined

(17.7 %) had MIH. There was no significant association

between sex (p = 0.58), socio-economic status (p = 0.09),

age (p = 0.26) and MIH. There was also no significant

difference in the number of teeth affected by MIH in the

maxilla and mandible, and on the right and left side of the

face. The most commonly affected teeth were the left

mandibular molars. The occlusal surfaces of the first

molars were mostly affected by MIH and the severity of

MIH on the teeth examined varied from mild (80.8 %),

moderate (14.0 %) to severe (5.2 %).

Conclusion The prevalence of MIH in this study

population is consistent with previous reports. The nonassociation

between sex and MIH prevalence, the varied

severity of the lesion and association between MIH affectation

of the first permanent molars and central incisors

give more weight to the possible role of environmental

factors in the aetiology of the lesion. The non-association

between MIH and socio-economic status may serve as a

distinctive feature of MIH and chronological enamel

hypoplasia.


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