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Electromyography of the perioral and masticatory muscles in orthodontic patients with atypical swallowing

Elektromyographische Untersuchung der perioralen Muskulatur und Kaumuskulatur bei kieferorthopädischen Patienten mit atypischem Schluckmuster

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Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie Aims and scope Submit manuscript

Abstract

Subjects with an open bite and an atypical swallowing pattern before (n=20) and after (n=10) orthodontic treatment and subjects with a normal swallowing pattern (n=15) were examined. The electromyographic (EMG) activity of the upper and lower lips in the region of the modiolus and of the mentalis, masseter and temporal muscles was evaluated during the swallowing of saliva and of water and after the chewing of peanuts as well as during maximal biting in intercuspal position.

During swallowing the atypical swallowers exhibited larger EMG activities of the perioral muscles and smaller EMG activities of the masticatory muscles than the control subjects. During maximal biting in intercuspal position, major EMG activity of the masseter and temporal muscles and minor EMG activity of the perioral muscles were recorded in both groups. No normalization of the electromyographic swallowing pattern could be observed during orthodontic treatment (closure of the open bite).

Zusammenfassung

Probanden mit offenem Biß und atypischem Schluckmuster vor (n=20) sowie nach (n=10) kieferorthopädischer Behandlung und Probanden mit normalem Schluckmuster (n=15) wurden untersucht. Mittels Elektromyographie (EMG) wurde die Aktivität der Ober- und Unterlippe im Bereich des Modiolus, der Mentalismuskulatur, der Musculi masseteres superficiales und der Musculi temporales anteriores während des Leerschluckens, des Wasserschluckens, des Schluckens nach Kauen von Erdnüssen sowie während des maximalen Zusammenbeißens ermittelt.

Die Gruppe der atypischen Schlucker zeigte im Vergleich zur Kontrollgruppe während des Schluckens große EMG-Aktivitäten der perioralen Muskulatur und geringe Aktivitäten der Masseter-und Temporalismuskulatur. Während des maximalen Zusammenbeißens wiesen atypische und normale Schlucker große Aktivitäten im Bereich der Kaumuskulatur und nur geringe Aktivitäten der perioralen Muskulatur auf. Eine Normalisierung des Schluckmusters durch die kieferorthopädische Behandlung (Schließen des offenen Bisses) konnte nicht beobachtet werden.

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Störmer, K., Pancherz, H. Electromyography of the perioral and masticatory muscles in orthodontic patients with atypical swallowing. J Orofac Orthop/Fortschr Kieferorthop 60, 13–23 (1999). https://doi.org/10.1007/BF01358712

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