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Development of chair-side evaluation system of swallowing discomfort of denture wearers
Author(s): Keisuke Matsumoto; Ryuhei Ikuta; Kanako Kataoka; Yumie Ono; Katsushi Tamaki
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Paper Abstract

We investigated the appropriate hemodynamic parameters of functional near-infrared spectroscopy (fNIRS) to best differentiate the discomfort intensity related to swallowing in healthy subjects wearing different types of simulated dentures. Thirty-one subjects performed 4 sessions of water-swallowing task in a sitting position without or with wearing any one of the 3 simulated dentures under continuous fNIRS monitoring of the prefrontal cortex. The simulated dentures were consisted of a flat maxillary palatal bar and bilateral support attachment to the teeth and gum. The palatal bar positions were arranged along with the anterior, middle, or posterior areas of the upper jaw. The cumulative values of oxyhemoglobin and deoxyhemoglobin concentration changes were calculated for periods of 5 - 10 s from completion of swallowing. Subjective rating of swallowing-discomfort was the lowest without wearing denture and increased along with the palatal bar position placed from anterior to posterior. Cumulated deoxyhemoglobin signals calculated for 10 s post-swallowing event in the left frontopolar prefrontal cortex showed the best correlation with the subjective rating of discomfort in swallowing with dentures. These neurological signatures would be beneficial to detect swallowing discomfort in elderly denture wearers who have difficulty in communicating with dentists.

Paper Details

Date Published: 20 February 2018
PDF: 8 pages
Proc. SPIE 10501, Optical Diagnostics and Sensing XVIII: Toward Point-of-Care Diagnostics, 105010K (20 February 2018); doi: 10.1117/12.2287610
Show Author Affiliations
Keisuke Matsumoto, Meiji Univ. (Japan)
Ryuhei Ikuta, Kanagawa Dental Univ. (Japan)
Kanako Kataoka, Kanagawa Dental Univ. (Japan)
Yumie Ono, Meiji Univ. (Japan)
Katsushi Tamaki, Kanagawa Dental Univ. (Japan)

Published in SPIE Proceedings Vol. 10501:
Optical Diagnostics and Sensing XVIII: Toward Point-of-Care Diagnostics
Gerard L. Coté, Editor(s)

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