@article{oai:shiga-med.repo.nii.ac.jp:00003316,
 author = {藤居, 孝文 and 森, 敏雄 and 渡邊, 裕加 and 野井, 将大 and 足立, 健 and 越沼, 伸也 and 町田, 好聡 and 山本, 学},
 issue = {1},
 journal = {滋賀医科大学雑誌},
 month = {Jul},
 note = {Mandibular third molar extraction is a common dental oral surgeries, and preoperative evaluation is very important because the difficulty and the risk of complications depend on the state of the mandibular tooth. A classification method to evaluate mandibular third molars using panoramic radiographs is currently available, however, but there is no such classification method using computed tomography (CT) images. In this study, we devised a new classification method using CT images and used it to clinically statistically evaluate patients undergoing mandibular third molar extraction operation in our department. Between April 1, 2016 and March 31, 2017, we collected data for 477 teeth in 393 cases of mandibular third molar extraction. The condition of the molar was evaluated using the Winter classification, Pell-Gregory classification, and apex position. In addition, the positional relationship between the apex and mandibular canal was assessed from CT images using the classification method devised in our department (“Adachi classification”). The most frequent results were as follows: Winter classification, horizontal: 242 teeth; Pell-Gregory classification, Ⅱ B: 157 teeth; and the apex position, Ap 0: 179 teeth; Class I: 208 teeth, Position B: 185 teeth, Type 1 A : 372 teeth. The Adachi classification is a new taxonomy that evaluates the relationship between the mandibular tooth and mandibular canal with or without bone intervention and the closest part. We will continue to collect more data to further investigate our novel classification method., Departmental Bulletin Paper},
 pages = {34--38},
 title = {当科における下顎智歯抜去術症例の臨床統計学的検討 : CT画像を用いた当科の分類},
 volume = {31},
 year = {2018}
}