Endodontics - Orthodontics correlation: Inside and outside the root.

The relationship between endodontics and orthodontics focusing on root canal-treated teeth under orthodontic forces is of interest. Lower root resorption rates in treated teeth compared to vital teeth were observed. Stress distribution and complications varied, emphasizing the need for careful multidisciplinary treatment planning. Regression analysis identified orthodontic force, treatment duration and obturation quality as critical predictors. The findings guide clinicians in optimizing outcomes for combined endodontic and orthodontic treatments.