［原著］CT画像による下顎智歯と下顎管の位置関係に関する検討

概要

論文の詳細を見る
During the removal of the mandibular third molar, the inferior alveolar nerve in the canal sometimes damaged. To avoid this complication, it is necessary to understand the positional relationship between the mandibular third molar and the mandibular canal. We evaluated the relationship between the mandibular 3^<rd> molar and the mandibular canal with panoramic X-p and computed tomography (CT). Eighty-six (50.0%) mandibular canals were buccal type, 64 were inferior type, 18 were lingal type, and 4 were between the roots type on CT findings. 137 (79.7%) canal pattern were round type, 35 were flatness type. 109 (63.4%) presence of bone were interposition type, 63 were non-interposition type. Among 172 third molar extraction, hypesthesia of lower lip was observed in 3 cases and inferior alveolar nerve was exposed in 3 teeth. There was no overlap between hypesthesia and nerve exposure. CT provides useful information to surgeons regarding the relationship between the mandibular third molar and the mandibualr canal.
琉球医学会,Ryukyu Medical Associationの論文