Abstract
Aims: The purpose of this study is to assess the prevalence of thumb sucking habit between preschoolersand the effect on their occlusion of the habit.Materials and Methods: 42 of pre-school children aged 4-5 years who were inspected by questioning forthe presence or absence of thumb sucking habit, and thumb examination, and the teeth were examined forthe presence of decreased over flight and overbite or open bite.Results: Total number children have thumb sucking habit, and open bite of them.Conclusion: In this age group (4-5) years , the number of children with thumb sucking habit was consideredhigh and the habit was found to increase the prevalence of malocclusion of deciduous.
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