Abstract
BackgroundThis study tries to determine the prevalence and co-morbidities associated with hypomineralised second primary molars (HSPM) in 8- to 10- year-old children in Ile-Ife, Nigeria; and the co-existence of HSPM and Molar Incisor Hypomineralisation (MIH) in the study population.MethodsThis was a cross sectional study involving 8- to 10- year-old children in schooling in suburban Nigeria. Information was collected on the child's age, sex and socioeconomic status. Intraoral examination was conducted to determine the presence of HSPM, MIH, caries and the oral hygiene status of study participants. The severity of HSPM was also determined. The prevalence of HSPM, the association between HSPM, sex and socioeconomic status of study participants, the difference in the prevalence of caries and poor oral hygiene in children with and without HSPM, and the prevalence of HSPM and MIH co-morbidity were determined.ResultsTwenty seven of the 469 children examined (5.8 %) had HSPM. The tooth prevalence of HSPM was 3.9 %. There was no significant sex (p = 0.06), age (p = 0.41), and socioeconomic status (p = 0.67) differences between children with HSPM and without HSPM. More children with HSPM had caries (p ≤ 0.001) and poor oral hygiene (p = 0.01). Children with HSPM have increased odds having dental caries (AOR: 6.34; CI: 2.78–14.46; p = <0.001) and reduced odds of having good oral hygiene (AOR: 0.32; CI: 0.13–0.78; p = 0.01) when compare with children without HSPM. Also 77.8 % of children with HSPM also had MIH.ConclusionThe prevalence of HSPM in the study population is significantly high. The large number of children with HSPM and MIH also suggests that HSPM is a predisposing factor for MIH. The significantly higher proportion of children with HSPM who had caries and poor oral hygiene makes it imperative to institute screening programmes for HSPM/MIH in the study population.
Highlights
This study tries to determine the prevalence and co-morbidities associated with hypomineralised second primary molars (HSPM) in 8- to 10- year-old children in Ile-Ife, Nigeria; and the co-existence of HSPM and Molar Incisor Hypomineralisation (MIH) in the study population
The second primary molars erupt about a year after the first primary molars [1, 5], higher prevalence 64 of dental caries have been observed in second primary molars compare to first primary molar that may be explained by the predilection of HSPM for the second primary molars [1, 16]
This study aimed at determining the prevalence and co-morbidities associated with HSPM, and the prevalence of HSPM/MIH comorbidity
Summary
This study tries to determine the prevalence and co-morbidities associated with hypomineralised second primary molars (HSPM) in 8- to 10- year-old children in Ile-Ife, Nigeria; and the co-existence of HSPM and Molar Incisor Hypomineralisation (MIH) in the study population. Hypomineralised second primary molar (HPSM), known as deciduous molar hypomineralisation (DMH), results from the disruption of the mineralisation of the 37 enamel in the second primary molar(s) during its development [1,2,3]. It is a structural or qualitative defect. Oyedele et al BMC Oral Health (2016) 16:65 molars or incisors as a result of hypomineralisation of systemic origin [8] This enamel defect results from disturbances in the calcification process. This study aimed at determining the prevalence and co-morbidities associated with HSPM, and the prevalence of HSPM/MIH comorbidity
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