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  • Title: The effect of bilateral lingual nerve anesthesia and increased occlusal vertical dimension on the onset of swallowing in adult males.
    Author: Tei K, Yamazaki Y, Ono M, Totsuka Y.
    Journal: Cranio; 2005 Jan; 23(1):39-47. PubMed ID: 15727320.
    Abstract:
    The present study attempts to determine whether the onset of swallowing is affected by bilateral lingual and inferior alveolar nerve anesthesia and by raising the occlusal vertical dimension by wearing an occlusal bite plate. Twenty young male volunteers were selected and asked to chew and swallow corned beef and a corned beef and liquid mixture in their usual manner before and after modifications were made. Oral and pharyngeal swallowing was investigated using videofluoroscopic examination in the lateral plane. Eight objective indicators, including oral containment time, swallowing threshold, and pharynx-to-swallow intervals were estimated. Oral containment time, total sequence duration, total number of chews, and total number of swallows of the two test foods were significantly different before and after the modifications. Individual pharynx-to-swallow intervals also varied. The results indicate that modification of the masticatory condition affects the onset of swallowing and that changes in the onset varied among the participants.
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