Aim: The clinical course of a patient with four avulsed mandibular incisors from replantation
to 14 years 4 months out of retention is discussed, with emphasis on how these replanted teeth with partially developed roots responded to occlusal changes achieved through orthodontic treatment and, thus, contributed to alveolar growth. Methods: The four mandibular incisors were replanted within 1 hour of avulsion. Maxillary protraction was initiated
7 months after replantation for overjet improvement, followed by nonextraction treatment of the permanent dentition, using the Begg technique for occlusal improvement. Results: The replanted teeth remain in good occlusal function, without ankylosis, at 14
years 4 months after replantation. The vital replanted mandibular incisors showed continued
root formation along with the reestablishment of lamina dura and periodontal regeneration. Conclusion: Multiple factors contributed to the long-term survival of the replanted teeth and the final stability of the occlusion. World J Orthod 2002;3:27–40.