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Svaga samband mellan malocklusion och funktion

Review article
Authors Inger Egermark
Tomas Magnusson
Gunnar E Carlsson
Published in Tandläkartidningen
Volume 98
Issue 11
Pages 48-53
Publication year 2006
Published at Institute of Odontology
Pages 48-53
Language sv
Keywords malocclusion, orthodontic treatment, temporomandibular disorders
Subject categories Orthodontics

Abstract

An investigation of stomatognathic and orthodontic variables was performed in 402 children, 7, 11 and 15 year old. The same procedure with questionnaire and clinical examination was repeated after 4 to 5 years and after 10 and 20 years. Signs and symptoms of TMD were mainly mild and increased in prevalence with age up to young adult age. There was a substantial fluctuation of TMD signs and symptoms but progression to severe pain and dysfunction was rare. There were significant correlations between reported bruxism and TMD symptoms. Baseline report of tooth grinding at night was a predictor of TMD treatment during the observation period. Every third of the individuals had had some sort of orthodontic treatment in childhood and their attitude to this treatment was more positive when they were 35 years old than at age 25. Those who had undergone orthodontic treatment had less signs and symptoms of temporomandibular disorders (TMD) than the remaining subjects, but the differences were small and in general not statistically significant. Morphological malocclusion and functional malocclusion (occlusal interferences) were only weakly associated with signs and symptoms of TMD. Nevertheless, lateral forced bite between retruded contact position (RCP) and intercuspal position (ICP) and unilateral crossbite may be possible risk factors for development of TMD. In conclusion, the findings of this longitudinal study showed that orthodontic treatment does not imply a risk to develop TMD later in life. Reported tooth-grinding at night as well as unilateral crossbite and lateral forced bite between RCP and ICP in young individuals are factors that deserve consideration as they may imply a risk for developing TMD signs and symptoms later in life.

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