Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Endodontics

This parallel, randomized clinical trial was conducted to compare the intensity and incidence of postoperative pain after single visit endodontic treatment using either manual or rotary ProTaper files for instrumentation, in which patients were equally allocated at random to receive one of the two procedures. Forty-six patients with vital or non-vital, mandibular posterior teeth without periapical pathosis, were endodontically treated in a single visit. The patients were divided into two groups, 1 and 2, each consisted of 23 patients. Instrumentation was done using either manual ProTaper files for group 1 or rotary ProTaper files for group 2. Irrigation was done using 2.6% NaOCl and 17% EDTA, finally the canals were flushed with distilled water. Postoperative pain was assessed using a modified Numerical Rating Scale (NRS) preoperatively then 6 hours, 12 hours, 24 hours, 48 hours, 72 hours and 7 days postoperatively. All demographic data, clinical and radiographic findings and NRS scores obtained from the patients were statistically analyzed. Results showed no statistically significant difference in the prevalence of preoperative pain, preoperative signs and symptoms, age, gender and periapical condition between the two groups. When comparing the median of NRS scores in the two groups, there was no statistically significant difference at all time periods between the two groups, except after 12 hours where group 2 (rotary ProTaper) showed a statistically significantly lower median of NRS scores than group 1 (manual ProTaper). Pain duration lasted longer in manual ProTaper group. In both groups pain levels declined gradually with time. There was no statistically significant difference in the incidence of different pain categories (no pain, mild pain, moderate pain, and severe pain) between the two groups preoperatively and at all time periods between the two groups

Issued also as CD