Assessment of post-operative pain with use of rotary and conventional root canal instruments in single and multiple visit root canal treatment

Aim: To compare the post-operative pain after the use of rotary and conventional root canal instruments in single and multiple visit root canal treatment
Materials and Method: 168 patients requiring Root Canal Treatment [RCT] in maxillary and mandibular 1st molar were involved in the study. On the basis of vitality and radiographic features two groups were made, multiple visit (Group A n=72), single visit (Group B n=96). Then the patients were randomly divided into 4 subgroups. Subgroup I n=36 (multiple visit conventional RCT), Subgroup II n=36 (multiple visit rotary RCT), Subgroup III n=48 (single visit Conventional RCT) and Subgroup IV n=48 (single visit rotary RCT). In subgroup I & Subgroup III Canal preparation was done with stainless steel K files in step back manner. In subgroup II & Subgroup IV, rotary Protaper Next was used. Irrigation was done with 3 % NaOCl and Ethylenediamine tetraacetic acid (EDTA) alternatively followed by obturation. The postobturation pain was recorded at 6hr, 12hr, 24hr, 1 week using visual analogue scale. Statistical Analysis was done using Tukey HSD Post Hoc Test and ANOVA Test.
Results: Within 24 hours there was statistically significant difference between the groups (p< 0.05) but after 7 days no statistically significant difference was there (p>0.05).
Conclusion: Patients in the groups either in single and multiple visit experience less postobturation pain if the canal preparation was done with the rotary files at all the time intervals (6hrs, 12hrs, 24hrs ) but after 7 days no statistical difference was found.