Comparison of the Effect of Root Canal Preparation by Using WaveOne and ProTaper on Postoperative Pain: A Randomized Clinical Trial

doi:10.1016/j.joen.2014.12.026

Journal of Endodontics

Volume 41, Issue 5, May 2015, Pages 575-578

https://doi.org/10.1016/j.joen.2014.12.026 Get rights and content

Abstract

Introduction

WaveOne is a single-file reciprocating instrumentation system with the benefits of M-Wire alloy that has increased flexibility and improved resistance to cyclic fatigue over the conventional alloy. Root canal preparation techniques may cause postoperative pain. The goal of the present study was to compare the intensity and duration of postoperative pain when using WaveOne or ProTaper Universal systems for instrumentation of root canals.

Methods

Forty-two patients who fulfilled specific inclusion criteria were assigned to 2 groups according to the root canal instrumentation technique used, WaveOne or ProTaper Universal. Root canal treatment was carried out in 2 appointments, and the severity of postoperative pain was assessed by numerical rating scale (NRS) score after each session until complete pain relief was achieved. Analgesic consumption, duration of pain, and root canal preparation time were also recorded.

Results

The mean NRS score and duration of pain after both appointments were significantly higher in the WaveOne group (P < .05); however, the mean analgesic consumption was only significantly higher in the WaveOne group after the first appointment (P < .05). In all groups the highest mean NRS score was seen 6 hours after each therapeutic appointment. Canal preparation time was significantly shorter in the WaveOne group (P < .001).

Conclusions

Postoperative pain was significantly lower in patients undergoing canal instrumentation with ProTaper Universal rotary instruments compared with the WaveOne reciprocating single-file technique.

Section snippets

Materials and Methods

This randomized clinical trial was approved by the Ethics Committee of Tehran University of Medical Sciences (Reg. No. 92/s/1421/130) and registered in www.irct.ir (IRCT2013071313970N1).

The sample size calculation, which was based on an error of alpha = 0.05 and a power of 0.8, indicated that ideally a sample size of 21 in each group would be required.

Forty-two consented patients between the ages of 15 and 55 years who were referred to the Endodontic Department of Tehran University of Medical

Results

The mean NRS scores at the various time intervals associated with each canal preparation technique are shown in Table 3. The intensity and duration of pain experienced after both appointments by patients in the WaveOne group were significantly higher than in the ProTaper group (P < .05) (Table 3, Table 4). In both groups the highest NRS scores were recorded 6 hours after each appointment, after which the NRS scores decreased; however, 12 hours after the second session in the ProTaper group, the

Discussion

The primary aim of this study was to investigate the influence of root canal instrumentation with WaveOne versus ProTaper Universal rotary files on the incidence and intensity of postoperative pain. Therefore, all other variables such as the type of irrigation were consistently kept similar in both groups without any preference regarding the use of 2% chlorhexidine over other irrigants. However, it has been shown that 2% chlorhexidine has similar antimicrobial effects as 5.25% sodium

Conclusion

Postoperative pain lasted longer and was more intense in patients treated with the WaveOne system compared with the ProTaper Universal system. However, the differences seen in the intensity of pain may not be clinically significant and did not affect the analgesic regime chosen by patients.

Acknowledgments

This study was supported by a grant from Tehran University of Medical Sciences (no. 92-03-69-22904).

The authors deny any conflicts of interest related to this study.

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CONSORT Randomized Clinical TrialComparison of the Effect of Root Canal Preparation by Using WaveOne and ProTaper on Postoperative Pain: A Randomized Clinical Trial

Abstract

Introduction

Methods

Results

Conclusions

Section snippets

Materials and Methods

Results

Discussion

Conclusion

Acknowledgments

J Endod

J Endod

J Endod

J Endod

Oral Surg Oral Med Oral Pathol

Oral Surg Oral Med Oral Pathol Oral Radiol Endod

J Endod

Pain

Oral Surg Oral Med Oral Pathol Oral Radiol Endod

J Endod

Oral Surg Oral Med Oral Pathol Oral Radiol Endod

Dent Clin North Am

Pain

J Endod

J Endod

CONSORT Randomized Clinical Trial
Comparison of the Effect of Root Canal Preparation by Using WaveOne and ProTaper on Postoperative Pain: A Randomized Clinical Trial