Abstract :

ABSTRACT 

Background: The avulsion of permanent teeth is the most common in young permanent dentition. Replantation of immature teeth after avulsion represents a major challenge in treatment management and long–term prognosis.  His case report describes 9 years of follow-up for an avulsed and replanted immature mandibular lateral incisor with progressive external root resorption.

Methods: A 7-year-old patient following an accident in which his mandibular left central incisor was avulsed and replanted within one hour after being stored in a physiological storage medium. However, a radiographic examination conducted six weeks after the dental injury revealed inflammatory root resorption of the replanted tooth #31. To address root resorption,  endodontic treatment was performed involving the use of calcium hydroxide as an intracanal medication for a short time,  followed by root canal obturation with mineral trioxide aggregate placed below the crystal bone margin.

Results: Three months later the root resorption had progressed. Consequently, a decision was made to perform periodontal surgery. While the long-term follow-up revealed that the inflammatory root resorption had damaged half of the root, the tooth remained functional and aesthetically favorable.

Conclusions: Despite the challenges associated with an immature tooth following avulsion, this case demonstrated favourable outcomes. The tooth maintained its functionality and exhibited a fa aesthetic, and the dimensions of the alveolar ridge were preserved, allowing for the physiological expansion of the dental arch.

Keywords: Etiology; Mandible; Root resorption; Tooth avulsion; Tooth injuries; Tooth replantation.