ABSTRACT Background: Tooth decay is a chronic, infectious and preventable disease that is very communal around the world.. The teeth with decay that are found in children mostly are the permanent first molars (PFMs). It has been detected that dental caries affect not only the majority of adults but also 60% to 90% of children. The teeth with decay that are found in children most often are the permanent first molars (PFMs). Aim: The aim of the current study is to evaluate the decayed, missing and filled teeth (DMFT) scores of first permanent molars (FPMs) in the early post-eruptive stage and prevent the complications of primary loss of FPM.. Material and method: Across sectional study was conducted through collect-ing data from 650 children attended to pediatric department / dentistry college / Duhok uni-versity through the academic year (2022-2023), the data were collected through using DMFT index and PFMs occlusion. Result: The mean number of DMFT for PFMs was 0.79 - 1.39, and the mean DMFTs was 0.88 - 1.44 in girls and 0.69 - 1.34 in boys. The prevalence of class l occlusion in males was 33%, and 46% in females, while class ll occlusion was 6% in males and 7% in females. Class
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