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颌面部创伤、手术、感染及肿瘤对三叉神经分支的损伤是常见的,这些损伤基本上属于物理性。尽管这可以引起损伤神经支配的口腔和面部暂时性或永久性感觉不良,但很少引起疼痛。根管操作后三叉神经损伤是罕见的,但最近作者收治了3例下颌磨牙根管治疗后引起严重的下齿槽神经损伤患者。病例报道:例一28岁女性,用Sargenti法充填7根管后,左下唇出现剧烈的针刺样阵发性疼痛,口服止痛剂效果不显。全景x线片示下齿槽管内有根充材料。临床检查见左下唇和颏部不能区别毛笔刷的方向;对两点的感觉区分大于20mm(正常6～8 mm);
Maxillofacial trauma, surgery, infection and tumor damage to the trigeminal nerve branches are common, these injuries are basically physical. Although this can cause temporary or permanent bad sensation of the oral and facial innervation of the lesion, it rarely causes pain. Trigeminal nerve injury after root canal operation is rare, but the authors recently treated 3 patients with mandibular molar root canals that caused severe hypoglossal nerve injury. Case Report: A 28-year-old female, Sargenti law filled with seven tubes, the left lower lip showed severe acupuncture-like paroxysmal pain, oral analgesic effect was not significant. Panoramic x-ray shows the root canal under the gutter material. Clinical examination, see the left lower lip and chin can not distinguish brush brush direction; the two points of feeling greater than 20mm (normal 6 ~ 8 mm);