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Effect of Rotary File Number on MB2 Canal Negotiation and Postoperative Pain
Sponsor: Mehmet Adıgüzel
Summary
This randomized controlled clinical trial aims to evaluate the effect of the number of rotary files on working length negotiation and postoperative pain in the second mesiobuccal (MB2) canals of maxillary first molars. Patients are assigned to one of four groups according to the number of rotary files used: single-, two-, three-, or four-file systems. Postoperative pain is assessed on each of the seven consecutive postoperative days (Days 1-7) using a visual analog scale (VAS), and working length negotiation success is recorded during canal instrumentation.
Official title: Effect of Number of Rotary Instruments on Negotiating Second Mesiobuccal Canals to Working Length and on Postoperative Pain: A Randomized Clinical Trial
Key Details
Gender
All
Age Range
20 Years - 65 Years
Study Type
INTERVENTIONAL
Enrollment
168
Start Date
2025-06-18
Completion Date
2025-11-19
Last Updated
2026-08-24
Healthy Volunteers
No
Interventions
One Curve Rotary File
A single-file NiTi rotary instrument (25/.04) operated at 300 rpm and 2.5 Ncm torque. The instrument was applied directly to the MB2 canal without prior hand-file glide path preparation.
Perfect Super System Minimal Invasive Kit
A two-file rotary system consisting of a 10/.06 Shaper and a 25/.04 Finisher. The 10/.06 Shaper was used as the initial file to reach working length with a brushing motion, followed by the 25/.04 Finisher. Both files were operated at 300 rpm and 2.0 Ncm torque.
VDW Rotate
A three-file NiTi rotary system consisting of 15/.04, 20/.05, and 25/.04 files used sequentially with brushing-pecking motions in 2-3 mm increments. All files were operated at 300 rpm, with torque settings of 1.3 Ncm for the 15/.04 file, 2.1 Ncm for the 20/.05 file, and 2.3 Ncm for the 25/.04 file.
Perfect Super System Advanced Kit
A four-file NiTi rotary system consisting of a 10/.07 Opener, 10/.04 glider, 17/.05, and 25/.04 files. A crown-down sequence was used. The 10/.07 Opener was operated at 300 rpm and 2.5 Ncm torque, the 10/.04 glider at 250 rpm and 1.0 Ncm torque, and the 17/.05 and 25/.04 files at 300 rpm and 2.5 Ncm torque.
Locations (1)
Hatay Mustafa Kemal University Faculty of Dentistry
Antakya, Hatay, Turkey (Türkiye)