Malocclusions in children at 3 and 7 years of age : a longitudinal study

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Malocclusions in children at 3 and 7 years of age : a longitudinal study

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Publication Article, peer reviewed scientific
Title Malocclusions in children at 3 and 7 years of age : a longitudinal study
Author(s) Dimberg, Lillemor ; Lennartsson, Bertil ; Söderfeldt, Björn ; Bondemark, Lars
Date 2013
English abstract
The aim of this longitudinal study was to compare the prevalence of malocclusion at ages 3 and 7 years in a sample of children, exploring the hypothesis that prevalence of malocclusion is higher at 3 than at 7 years of age and may be influenced by sucking habits. The study sample comprised 386 children (199 girls and 187 boys), aged 3 years at study start, sourced from three Public Dental Service clinics in Sweden. Malocclusion was diagnosed by clinical examination, using a specific protocol. Data on allergy, traumatic injuries, sucking habits, and breathing pattern including nocturnal breathing disturbances were obtained by means of a questionnaire answered by child and parent in conjunction with the initial and final clinical examination. The overall prevalence of malocclusion decreased significantly, from 70 to 58% (P < 0.0001): predominantly anterior open bite, excessive overjet, and Class III malocclusion. Although high rates of spontaneous correction were also noted for deep bite, Class II malocclusion and posterior and anterior crossbites, new cases developed at almost the same rate; thus, the prevalence was unchanged at the end of the observation period. Anterior open bite and posterior crossbite were the only conditions showing significant associations with sucking habits. The results confirm the hypothesis of higher prevalence of malocclusion at 3 years of age and clearly support the strategy of deferring orthodontic correction of malocclusion until the mixed dentition stage.
DOI (link to publisher's fulltext)
Publisher Oxford University Press
Host/Issue European Journal of Orthodontics;1
Volume 35
ISSN 1460-2210
Pages 131-137
Language eng (iso)
Subject(s) Medicine
Research Subject Categories::ODONTOLOGY
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