口腔粘膜感覚閾値を変動させる要因についての検討

DOI Web Site 参考文献37件
  • 青柳 順也
    東京医科歯科大学大学院医歯学総合研究科・顎顔面頸部機能再建学系・顎顔面機能修復学講座・顎顔面外科学分野

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タイトル別名
  • Factors affecting the sensory threshold of the oral mucosa, focusing on the thermal stimulation effect
  • 口腔粘膜感覚閾値を変動させる要因についての検討--温冷刺激効果を中心に
  • コウクウ ネンマク カンカク イキチ オ ヘンドウ サセル ヨウイン ニ ツイテ ノ ケントウ オンレイシゲキ コウカ オ チュウシン ニ
  • ―温冷刺激効果を中心に―

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This study aimed to investigate factors affecting the warm, cold and tactile thresholds of the oral mucosa. Thirty subjects aged 24-37 years participated in the study. Measurement points were the tip and dorsum of the tongue, and the anterior of the buccal mucosa. Surface temperature and sensory threshold were measured for these points before and after applying thermal stimuli of 60°C and 4°C for 1 min each (15 s × 4). Threshold recovery times were measured after the application of each stimulus. The relationship between these changes and their causative factors were examined.<br>The tip of the tongue in the absence of stimulation had the lowest values for surface temperature and sensory threshold. Warm and cold thresholds changed significantly after application of warm and cold stimulation. Warm thresholds increased while cold thresholds decreased after warm stimulation. Conversely, cold thresholds increased while warm thresholds decreased after cold stimulation. On the other hand, tactile thresholds changed significantly only on the tip of the tongue and buccal mucosa after cold stimulation. Tactile thresholds were the fastest to recover among the three thresholds. Gender, flavor preference (e.g. rich, sour, piquant) and drinking habit were determined as factors affecting surface temperature, sensory threshold and recovery time.<br>Sensory thresholds changed with experience of daily stimuli. In addition, the longest recovery time was 16 min; therefore, for correct results and diagnosis, it may be necessary to remove stimuli for at least 16 min before sensory examination.

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