The Clinical Evaluation of 1-Visit Root Canal Therapy Prepared by Engine-driven Rotary NiTi Canal Instrumentation

Objectives: The purpose of this clinical study was to evaluate postoperative and long effect after root canal therapy performed in 1-appointment by Profile. Methods:Eighty-two patients requiring root canal therapy on permanent molars were included in this study. Patients were randomly assigned to 3 groups. Both vital and nonvital teeth were included.Teeth in group 1 (n = 30) were obturated at the first appointment by using laterally condensed gutta-percha after the canal prepared by ProFile rotary files. Teeth in group2 (n = 30) were obturated at the first appointment by using laterally condensed gutta-percha after the canal prepared by K-file. Teeth in group3 (n = 30) were closed with calcium hydroxide paste and ZnO restoration and were obturated at a second appointment 7 days later. The postoperative and long effects were analyzed after the treatment. Results: There was statistically significant difference in postoperative pain between patients treated in 1 appointment prepared by Profile and by k-file (P <0.01). There was no statistically significant difference between the three groups after one year. Conclusions: The study concluded that the Profile rotary instrument could reduce stimulation and damage to the apical tissue during preparation and the root canal could be well shaped and compactly filled. Profile rotary instrument could reduce postoperative pain and improve the successful rate in 1-appointment root canal therapy.