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01.12.2014 | Original Article | Ausgabe 6/2014

Dysphagia 6/2014

Effect of Supraglottic and Super-supraglottic swallows on Tongue Pressure Production against Hard Palate

Zeitschrift:
Dysphagia > Ausgabe 6/2014
Autoren:
Shigehiro Fujiwara, Takahiro Ono, Yoshitomo Minagi, Masako Fujiu-Kurachi, Kazuhiro Hori, Yoshinobu Maeda, Sara Boroumand, Ina Nitschke, Vith Ursula, Jörg Bohlender

Abstract

The objectives of this study were to evaluate the state of tongue pressure production during supraglottic swallow (SS) and super-supraglottic swallow (SSS) performed by healthy adults, and to investigate the effects of these swallowing maneuvers on the oral stage of swallowing. The participants were 19 healthy individuals. Tongue pressure against the hard palate during swallowing was measured using a tongue pressure sensor sheet system with five pressure-sensitive points. The tasks comprised swallowing 5 mL of water by normal wet swallow, SS, and SSS, and the parameters for analysis were the duration, the maximal magnitude, and the integrated value of tongue pressure during swallowing. The duration of tongue pressure was significantly longer at the anterior-median part of the hard palate during both SS and SSS than with normal wet swallow. The maximal magnitude increased significantly only at the posterior part of the hard palate during SS, but at all points during SSS. The integrated value increased significantly only at the posterior-median part of the hard palate during SS, but at all points except the mid-median part of the hard palate during SSS. The maximal magnitude and integrated value were also significantly higher at the anterior-median and posterior circumferential parts during SSS than during SS. These results show that these two swallowing maneuvers, which are known primarily as techniques to protect the airway, also function to strengthen the tongue pressure produced by the contact between the tongue and the hard palate during swallowing and this effect is more pronounced during SSS.

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