ジェランゼリーの口蓋圧計測による咀嚼と嚥下

概要

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The palatal pressure while masticating and swallowing gellan jelly was measured with six transducers embedded in an artificial palate fixed to the human hard palate. These palatal pressure measurements were compared with instrumental measurements. Mastication between the tongue and palate changed to mastication with the teeth at around 0.4% gellan jelly. The maximum pressure obtained by the palatal pressure measurements was similar to the stress at the breakpoint of gellan jelly by instrumental measurements. The palatal pressure when swallowing appeared as a decompressed pulse. The decompression area of the pulse for a high jelly concentration requiring long mastication was much greater than that for a low jelly concentration requiring short mastication. The start of the decompression pulse was respectively 0.06s and 0.2s later at the central (B) and posterior (C and D) points than that at the anterior (A) point. It is suggested that this decompression pulse assists transfer of the bolus upon swallowing from the anterior to posterior part of the mouth.
2005-07-15