A fragment of a dental instrument was left in an upper side tooth by a dentist who treated the patient in a different clinic. According to an X-ray image, the instrument entered the root canal of the tooth. While the patient did not suffer any discomfort due to this issue, it was decided that the fragment should be removed as it would inevitably corrode and it is possible that the tooth may become painful at any time. 1 - spiral part of a intratubular tool. 2 - apex of a root of a tooth.