Malocclusion And Premature Teeth Loss: Its Prevalence And Association Among Yemeni School Children In Sana’a

Abstract

Objectives: This study was conducted in Sana'a city, Yemen to detect the prevalence of early loss of primary teeth and its consequence on malocclusion. Materials and methods: This cross-sectional observational study included 1079 school children aged 7-12 years, and for the detection of the following characteristics, the samples were clinically examined: Angle's classification of malocclusion, anterior open-bite, overjet, lateral open-bite, overbite midline shift and cross-bite. Also, the early loss was classified according to the chronological age of an eruption of the permanent teeth proposed by Kronfeld. Results: The prevalence of malocclusion among school children was 81.1% and the normal first-class molar relationship was found only in 18.9%, while the class I malocclusion included the highest rate of the sample 70.4%, followed by the class II with a 9.5% relationship, the class III included only 1.1%.