Criterion for determining the prognosis of reduction in the mechanical touch threshold caused by trigeminal peripheral nerve injury

DOI Web Site 12 References
  • KURATA Shigenobu
    Division of Dental Anesthesiology, Department of Tissue Regeneration and Reconstruction, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences
  • TANAKA Yutaka
    Department of Dental Anesthesiology, Niigata University Medical and Dental Hospital
  • TERUMITSU Makoto
    Division of Dental Anesthesiology, Department of Tissue Regeneration and Reconstruction, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences
  • TSURUMAKI Tatsuru
    Division of Dental Anesthesiology, Department of Tissue Regeneration and Reconstruction, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences
  • KANEMARU Hiroko
    Department of Dental Anesthesiology, Niigata University Medical and Dental Hospital
  • YOSHIKAWA Hiroyuki
    Department of Dental Anesthesiology, Niigata University Medical and Dental Hospital
  • KODAMA Yuki
    Department of Dental Anesthesiology, Niigata University Medical and Dental Hospital
  • YAMAZAKI Maiko
    Department of Dental Anesthesiology, Niigata University Medical and Dental Hospital
  • SEO Kenji
    Division of Dental Anesthesiology, Department of Tissue Regeneration and Reconstruction, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences

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Other Title
  • 末梢性三叉神経損傷における触覚閾値低下の予後判定基準について
  • マッショウセイ サンサ シンケイ ソンショウ ニ オケル ショッカク シキイチ テイカ ノ ヨゴ ハンテイ キジュン ニ ツイテ

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Abstract

We have reported that natural recovery was difficult in patients whose mechanical touch threshold (MTT) increased to greater than 0.84 g after orthognathic surgery. This study was performed retrospectively to investigate the MTT (measured in the mental area) for determining a difficult natural recovery after oral and maxillofacial surgery. A total of 69 patients were included in this study. The first evaluation was performed from 1 to 2 weeks after the nerve injury. The second evaluation was performed from 3 to 8 weeks after the nerve injury. The diagnostic accuracies, including sensitivity, specificity, positive predictive value, and negative predictive value, were estimated. Diagnostic efficiency for determining a difficult natural recovery was also calculated and reached its highest value at 3.0 g in the first evaluation. Therefore an MTT value greater than 3.0 g in the first evaluation is a good criterion for diagnosing difficulty in a natural recovery.

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