Post endodontic pain severity after single visit treatment using Twisted-File, TF-Adaptive, and TruNatomy file systems: A questionnaire-based observational study

Purpose: This observational study aimed to evaluate post endodontic pain using Twisted File (TF), TF-Adaptive (TFA), and TruNatomy (TRN) files after a single visit root canal treatment.
Methods: A total of 150 healthy patients with asymptomatic maxillary or mandibular molar teeth identified for root canal treatment were allocated into three groups according to the instrumentation technique used: Group 1 (TF), Group 2 (TFA), and Group 3 (TRN) file systems were used in a single visit. The pain level after 72 h was questioned using a visual analog scale. Scores were analyzed using the Chi-square test with a significance value of p< 0.05.
Results: A significant difference was found between groups in terms of pain incidence (p = 0.048). In the pairwise comparison, there was no difference between Groups 1 and 2 (TF and TFA) (p = 0.547), and there was no difference between Groups 1 and 3 (TF and TRN) (p = 0.201). A significant difference was found between Group 2 (TFA) and Group 3 (TRN) in terms of pain incidence (p = 0.007).
Conclusion: All file systems used in the study caused post endodontic pain. When evaluating patients experiencing “no pain,” the incidence of symptoms was higher with the TRN systems.