Kfir Y, Shem-Tov A
Oral Surg Oral Med Oral Pathol. 1980 Mar;49(3):208-10. doi: 10.1016/0030-4220(80)90047-x.
During routine clinical examination, a radiopaque needlelike foreign body was disclosed in a patient's left maxillary sinus. The foreign body was surgically retrieved and found to be a bent endodontic silver point.
在常规临床检查中,一名患者的左上颌窦发现了一个不透射线的针状异物。该异物通过手术取出,发现是一根弯曲的牙髓银尖。