歯科治療を契機に発症した三叉神経領域の神経因性疼痛の臨床像

  • 千葉 雅俊
    東北大学大学院歯学研究科口腔病態外科学講座口腔外科学分野
  • 樋口 景介
    東北大学大学院歯学研究科口腔病態外科学講座口腔外科学分野
  • 近藤 武光
    東北大学大学院歯学研究科口腔病態外科学講座口腔外科学分野
  • 越後 成志
    東北大学大学院歯学研究科口腔病態外科学講座口腔外科学分野

書誌事項

タイトル別名
  • Clinical picture of neuropathic trigeminal pain provoked by dental treatment
  • シカ チリョウ オ ケイキ ニ ハッショウシタ サンサ シンケイ リョウイキ ノ シンケイインセイ トウツウ ノ リンショウゾウ

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抄録

Tooth extraction or pulpectomy sometimes causes damage to the terminal branch of the trigeminal nerve, but the risk of developing neuropathic trigeminal pain (NTP) is very low. Therefore neuropathic pain is unfamiliar to many dentists and presents difficulties in diagnosis and management. The aim of this study was to clarify the picture of NTP provoked by dental treatment.<BR>The causative dental surgery, damaged nerve, pain, abnormal sensation, and psychology of nine NTP patients (all female, mean age of 33.9 years) were retrospectively reviewed. The results were as follows: (1) The causative treatment was tooth extraction in 5 patients, and getting bone from socket, inferior nerve block, cystectomy, and pulpectomy in one patient, respectively. (2) The damaged nerve was the infraorbital nerve in one patient, inferior alveolar nerve in 6 patients, and inferior alveolar nerve and lingual nerve in 2 patients. (3) NTP was spontaneous and provoked pain (allodynia or trigger area) in all patients. Degree of NTP was moderate to severe, the nature of NTP was inexperienced abnormal character, and NTP decreased the quality of life. (4) Hypoesthesia or dysesthesia affected the oral mucosa or skin peripheral to the damaged nerve in 8 patients, and was accompanied by pain in 7 patients. (5) Anxiety or depression was elicited by NTP in six patients.<BR>These clinical findings of NTP were the same as those of neuropathic pain in other sites. The main reason for the diagnostic delay in NTP may be attributed to dentists' lack of awareness of this disease.

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