@article{oai:mdu.repo.nii.ac.jp:00000763,
 author = {内田, 啓一 and 藤木, 知一 and 人見, 昌明 and 深澤, 常克 and 児玉, 健三 and 長内, 剛 and 和田, 卓郎},
 issue = {3},
 journal = {松本歯学},
 month = {Dec},
 note = {application/pdf, Foreign bodies found in the maxillary sinus include fractured dental roots, instruments used for canal treatment and root canal filling material. If such foreign bodies remain in the maxillay sinus for long periods sinusitis may occur. Radiographic examination is necessary to ascertain the position of the foreign body and to determine its shape, size and position and to evaluate diachronic changes accurately. We reported here a case of canal filling material in the maxillary sinus accompanied by sinusitis.},
 pages = {189--193},
 title = {上顎洞内異物の1症例},
 volume = {23},
 year = {1997}
}