Figure 5: (a) Preoperative periapical radiograph of case 8; a 35-year-old female with chief complaint of buccal swelling and pain in palpation on maxillary left central incisor. The tooth had a previous inadequately obturated root canal treatment with apical resorption and a very slight apical rarefaction. (b) Post-operative periapical radiograph. (c) Follow-up radiograph at 12 months after treatment. The tooth was functional without recurrence of swelling and sensitivity to percussion and palpation.