Accidental iatrogenic foreign bodies in the oral and maxillofacial region can be caused by broken dental needles. Most of these cases occur during inferior alveolar nerve block anesthesia. We report a case of a broken dental needle during infiltration anesthesia, which was removed by the submandibular approach under X-ray fluoroscopic guidance. The patient was a 17-year-old female, who visited a nearby dental office for extraction of a right lower wisdom tooth. During infiltration anesthesia of lingual gingiva, a dental needle broke off from the base. Therefore, she was referred to our department to have it removed. A CT scan was performed on the same day, and the needle was found in the right internal pterygoid muscle. The next day, we attempted to remove it immediately by the intraoral approach under X-ray fluoroscopic guidance. However, the fractured needle had migrated to the mandibular angle, so we eventually switched to a submandibular approach to remove it. The patient’s postoperative course was good with no major complications.
