Matsuda Shinpei, Ohba Seigo, Yoshimura Hitoshi, Kobayashi Junichi, Watanabe Ikuya, Sano Kazuo
From the *Division of Dentistry and Oral Surgery, Department of Sensory and Locomotor Medicine, Faculty of Medical Sciences, University of Fukui, Fukui; and †Department of Dental and Biomedical Materials Science, Unit of Basic Medical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
J Craniofac Surg. 2014 May;25(3):e233-5. doi: 10.1097/SCS.0000000000000515.
Two cases of foreign bodies that were incidentally observed on orthopantomographs are reported in this study. The foreign bodies were analyzed using an x-ray fluorescence spectrometer to identify what the migrated foreign bodies were and what migration pathways they had taken. The removed metallic foreign bodies from the maxillae of 2 patients, who were referred to the Department of Dentistry and Oral Surgery of the University of Fukui Hospital, were analyzed using an x-ray fluorescence spectrometer in the Department of Dental and Biomedical Materials Science, Nagasaki University. The major component of foreign body in patient 1 was silver, and that in case 2 was iron. On the basis of the imaging results and the patients' clinical history, the foreign bodies were considered to be caused by iatrogenic migration. Understanding the existence of foreign bodies and their migration pathway into the jaw bone can thus make clinicians more aware of such migrations and can thereby contribute to reducing iatrogenic accidents.
本研究报告了两例在全景片上偶然发现的异物病例。使用X射线荧光光谱仪对异物进行分析，以确定迁移的异物是什么以及它们所采取的迁移途径。从福井大学医院牙科和口腔外科转诊的2例患者上颌骨取出的金属异物，在长崎大学牙科和生物医学材料科学系使用X射线荧光光谱仪进行分析。病例1中异物的主要成分是银，病例2中是铁。根据影像学结果和患者的临床病史，认为异物是医源性迁移所致。因此，了解异物的存在及其向颌骨的迁移途径可以使临床医生更加意识到此类迁移，从而有助于减少医源性事故。
