# 15‐Year Follow‐Up of Multidisciplinary Management of Severe External Root Resorption Caused by Biocortically Impacted Maxillary Canine: A Case Report

## TL;DR

A 14-year-old patient's damaged tooth was successfully preserved for 15 years through a multidisciplinary dental approach.

## Contribution

Demonstrates long-term success of conservative treatment for severe root resorption caused by an impacted canine.

## Key findings

- Surgical removal of the impacted canine and endodontic microsurgery preserved the central incisor.
- The treated tooth remained functional and stable over 15 years of follow-up.

## Abstract

To highlight the effectiveness of a conservative, multidisciplinary approach in managing external root resorption caused by a biocortically impacted maxillary canine in a young patient and to demonstrate the potential for long‐term preservation of a compromised central incisor.

A 14‐year‐old female presented with a biocortically impacted maxillary right canine causing a severe root resorption of the adjacent central incisor. Cone‐beam computed tomography (CBCT) revealed direct contact between the impacted canine and incisor root, with only one‐third of the incisor’s root structure intact. Surgical removal of the canine was followed by endodontic microsurgery on the central incisor with minimal apical resection and mineral trioxide aggregate (MTA) for root‐end filling. Internal bleaching addressed MTA‐induced discoloration, and comprehensive orthodontic and esthetic treatments were completed. Over a 15‐year follow‐up, the incisor remained functional, asymptomatic, and stable, demonstrating that early diagnosis and conservative multidisciplinary management can preserve compromised teeth, maintain alveolar bone, and support successful orthodontic treatment.