軟口蓋ダイナミックパラトグラフィーによる構音時舌運動様式の観察方法について

概要

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In order to elucidate the reality of abnormal sound caused by oral diseasesand of velar consonants in normal subjects, a dynamic velography (a dynamic palatography for soft palate) was developed by applying a palatography for hard palate in our department.<BR>The artificial soft palate device developed in our laboratory consists of a soft palate with gold electrodes which are arranged at a fixed interval (at 5mm) on a thin latex sheet (about 40μ) and an acrylic resin hard palate playing a role as a supporting apparatus. The arrangement of electrodes is 7 rows in the right and left directions and at 5.0mm intervals from the rear edge of the hard palate in the anterior and inferior directions, making a fan-shape with narrowed sides. The total number of electrode used in the whole soft palate was 36.<BR>For maintaining the artificial soft palate device within oral cavity, it was directly adhered to the mucous membrane using PANA (Sodium polyacrylate) while the hard palate was fixed to crosspin teeth.<BR>Superior stability and reproducibility with less feeling of foreign body were demonstrated, clearly showing a possibility of practical use of dynamic observation on the lingual-soft palate contact.
社団法人日本口腔外科学会の論文