A BSTRACT Background: Root canal treatment can cause postoperative pain which may reduce how pleased the patient feels and how well they follow the treatment instructions. Kinematics involving reciprocating or rotating devices may have an impact on how much postoperative discomfort patients feel. Materials and Methods: Three private clinics in Najran region Saudi Arabia recruited 240 patients who needed treatment on single-rooted teeth. One group of patients (A) was assigned treatments using the reciprocating WaveOne Gold and the other group (B) was treated with the continuous rotary ProTaper Next. Skilled endodontists performed all procedures under clear and consistent clinical rules. We used a Visual Analog Scale (VAS) after 6, 24, 48, and 72 hours to see how much pain the patients had. SPSS software version 26 was used for statistical analysis, and P < 0.05 was the level of significance. Results: Six hours after the procedure, patients in the reciprocating group had pain levels of 4.1 which was significantly higher than the pain level of 3.2 in the rotary group ( P = 0.03). By day 3 (24 hours), the scores were 2.8 ± 1.3 (reciprocating) and 1.9 ± 0.9 (rotary) ( P = 0.01). Seventy-two hours after surgery, both groups had little pain, measured by average scores of 0.6 ± 0.4 and 0.3 ± 0.3, respectively ( P = 0.12). Rotary instrumentation showed lower pain levels very soon after treatment. Conclusion: Patients who received root canal therapy with rotary instruments experienced less pain after the procedure in the first 24 hours than those treated with reciprocating instruments.
Saif Al Yami (Thu,) studied this question.