通常埋伏歯は，顎骨内にみられるものである.今回，下顎枝にみられた異所性埋伏歯の手例を報告する.患者は自発痛と左側頰部の腫脹と疼痛を主訴に当院を受診した.X線検査では智歯周囲炎の二次感染と考えられた.抗菌化学療法後，口腔内アプローチで抜歯した.抜歯された歯は第3大臼歯と思われ,術後は経過良好である.%An impacted tooth is usually in the jaw bones near the dental arch. A case of Ectopic impacted tooth found in the mandibular ramus are reported. The patient was refferd to our hospital with the chief complaint of pain and shight swelling of the left cheek. From X-ray examination, secondary infection of the pericoronal lesion of the impacted tooth was suspected. After chemotherapy with antibiotics the tooth was extracted in an extraoral approach. Extracted tooth was resembled the lower third molar. There have been no postoperative complications.
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