Abstract
ABSTRACTObjective:To evaluate various kinematic movements on postoperative pain using a Reciproc system.Material and Methods:Fifty-six molar teeth were divided into four groups according to kinematics as follows: continuous rotation, 360° CCW – 30° CW, 270° CCW – 30° CW, and 150° CCW – 30° CW. Preoperative and postoperative pain levels using visual analogue scale (VAS), percussion pain, and analgesic intake were recorded for each subject. Postoperative pain levels at 1, 3, 5, and 7 d were evaluated. Data were analyzed statistically using the Kruskal-Walis, Mann-Whitney-U, one-way analysis of variance, and chi-square tests (p=0.05).Results:Continuous rotation resulted in more pain at Day 1 when compared with the reciprocating groups (360° CCW – 30° CW and 270° CCW – 30° C) (p<0.05).Conclusions:Continuous rotation resulted in more postoperative pain at Day 1 than in reciprocating groups, and thereafter no significant pain was found among the groups.
Highlights
One of the most important matters in endodontic treatment is the prevention of pain
Reciproc system (VDW, Munich, Germany) is characterized by an S-shaped cross section. It has sharp cutting edges and a non-cutting tip. It shapes the canals with a reciprocal back-and-forward motion (150 degrees counterclockwise and 30 GHJUHHVFORFNZLVH 7KLVVLQJOH¿OHV\VWHPFRQVLVWV RIWKUHH¿OHV5 5 DQG R50 (50/0.05)2
Mann-Whitney U test revealed that continuous rotation resulted in more pain at Day 1 than in reciprocating groups (360° CCW – 30° CW and 270° CCW – 30° C) (p
Summary
Postoperative pain after endodontic treatment is a frequent complication. According to a systematic review, the frequency of endodontic postoperative pain in patients is between 3% and 58%11. Reciproc system (VDW, Munich, Germany) is characterized by an S-shaped cross section. It has sharp cutting edges and a non-cutting tip. It shapes the canals with a reciprocal back-and-forward motion (150 degrees counterclockwise and 30 GHJUHHVFORFNZLVH 7KLVVLQJOH¿OHV\VWHPFRQVLVWV RIWKUHH¿OHV5 5 DQG R50 (50/0.05). It shapes the canals with a reciprocal back-and-forward motion (150 degrees counterclockwise and 30 GHJUHHVFORFNZLVH 7KLVVLQJOH¿OHV\VWHPFRQVLVWV RIWKUHH¿OHV5 5 DQG R50 (50/0.05)2 These instruments are produced with a special NiTi alloy (M wire) subjected to a special thermal treatment process, performed to SURYLGHKLJKHUÀH[LELOLW\WRWKHLQVWUXPHQW9
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