Long-term follow-up of advanced resorption of upper incisors’ roots after orthodontic treatment. Case report

Introduction
Resorption related to orthodontic treatment is pathological external resorption caused by compression, and leads to the loss of root cement and dentin. There are many predisposing factors for resorption. These factors are classified as patientrelated factors and treatment-related factors. In relation to patient-related factors, genetic background, age, sex and race, as well as groups of teeth subject to resorption and root features are of great importance. Upper incisors are the most susceptible to resorption due to their atypically shaped roots. Treatment-related factors include malocclusions, appliance type, duration of active orthodontic treatment and its course.

Aim
The aim of the work is to present a case of a female patient with advanced resorption of roots of upper anterior teeth.

Case report
A 28-year-old female patient with advanced resorption of roots of upper anterior teeth reported for an orthodontic consultation. In the past, she had been treated with upper fixed braces from a thin archwire for 4 years. After the appliance was removed, teeth showed significant mobility in the labial and palatal direction. As the treatment duration was long, the pulp viability was examined. When the appliance had been removed and the fiberglass splint was placed, teeth were subject to clinical and radiological follow-up examinations for 11 years.

Results
Clinical and radiological examinations showed that the resorption process was stopped and teeth were stabilised within the process.

Conclusions
Knowledge of predisposing factors for resorption allows to provide a correct course of orthodontic treatment and to predict a resorption stage. Shape of roots of displaced teeth, application of forces of various magnitude and clinical and radiological examinations are of great importance.