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Background : Molar incisor hypomineralization is a specific form of enamel hypomineralisation resulting from systemic illnesses affecting the first permanent molars and/or permanent incisors. Hypomineralized second primary molars (HSPM) is an entity almost duplicating MIH in the primary dentition affecting the second primary molars.
Aim : The aim of this study is to determine the prevalence and defect characteristics of HSPM in a 4 to 10 year old indian population.
Methods :Intraoral examination was carried out on 250 children who were 4 to 11 year of age. Results : Out of the 250 children examined for the presence of hypomineralized second primary molars, 28 participants were presented with the same. Therefore the prevalence percentage of hypomineralized second primary molars in this study was 11.2%.
Conclusion : The prevalence was not statistically significant (p>0.05). Out of the 11.2%, 31% were presented with MIH.