Nasal septal foreign body as a complication of dental root canal therapy: A case report

Figure 1 Dental film showing the foreign body at position 21.

Figure 2 Postoperative dental film showing the foreign body residue 29. 4 mm from the tip of the left incisor.

Figure 3 Computed tomography scan of the nasal sinuses before the third surgery. A: Axial plane; B: Sagittal plane; C: Coronal plane showing a pin-like foreign body with hyperdensity in the left side of the nasal septum; D: Three-dimensional reconstruction reconfirmed the position.

Figure 4 Computed tomography scan of the nasal sinuses after the third surgery. A: A needle was used as a reference; B: Three-dimensional reconstruction; C and D: Axial (C) and sagittal planes (D) showing that the needle was pointing right to the pin-like foreign body.

Figure 5 The gross of the foreign body confirmed to be a piece of the fractured instrument for root canal therapy.