Abstract
OBJECTIVES: To evaluate the effect of orthodontic movement on traumatized teeth treated with the regenerative endodontic procedure (REP). MATERIALS AND METHODS: The increase of the radiographic root area (RRA) of each REP tooth was measured at each follow-up visit after the end of orthodontic treatment. The study included two experimental groups of patients aged 7-17 with REP-treated teeth. The Ortho REP group consisted of eight patients who underwent orthodontic treatment, whereas the second group (no Ortho REP group) included seven patients who did not receive orthodontic treatment. The control groups comprised the same patients and their homologous or adjacent healthy teeth that did not undergo REP treatment. RESULTS: Orthodontic treatment did not negatively affect root development of immature, traumatized REP-treated teeth during the treatment or retention periods. Additionally, the increase in RRA in regenerated teeth was age-dependent, with the greatest RRA increase in young patients. CONCLUSIONS: Close collaborative endodontic-orthodontic follow-up is recommended to ensure favorable results. The findings suggest that REP-treated teeth may undergo orthodontic treatment without adverse effects.