Factors associated with the outcome of root canal treatment-A cohort study conducted in a private practice.

Aim: To investigate the association of various pre-, intra- and post-operative factors on root canal treatment outcome.

Methodology: In this cohort study, primary or secondary root canal treatment of mature permanent teeth was performed by a single endodontist in a private practice over 13 years, and followed 1-4 years after treatment. Treatment details and clinical and radiographic data were collected.