ABSTRACT

Introduction

The purpose of this study was to evaluate effect of cryotreated and warm sodium hypochlorite (NaOCl) on post-operative pain in patients with symptomatic irreversible pulpitis and symptomatic apical periodontitis.

Methods

Sixty-six individuals with pre-operative pain scores of ≥ 54mm on the Heft Parker Visual Analogue Pain Scale (HP-VAS) diagnosed with symptomatic irreversible pulpitis and symptomatic apical periodontitis as per the AAE guidelines in mandibular molars were included. The preparation of the access, and the root canals were instrumented and irrigated in accordance with a standard protocol. Based on the temperature of the final irrigant, the root canals were then randomly assigned to three groups and 3% NaOCl was irrigated: Control (at 25°C), cold NaOCl (2°C) and warm NaOCl (60°C) (n = 22/group). Root canal treatment was completed at the same visit. Pre- and post-operative pain assessment at 6, 24, 48, and 72 hours was conducted using HP-VAS, and analgesic consumption was noted. Suitable statistical tests were used to analyze the data.

Results

In comparison to the other two groups, cold NaOCl group had a lower HP-VAS score at all follow-up intervals. Between groups, there was a statistically significant difference in post-operative pain scores at 6 and 72 hours (p < 0.05). None of the subjects experienced any postoperative discomfort at 72 hours in the control and cold NaOCl group.

Conclusion

Patients treated with cold NaOCl as the final irrigant experienced significantly lesser post-operative pain at 6 hours when compared to room temperature and warm NaOCl.

Click here for the full article which is available on the Science Direct website.

Postgraduate Certificate

Year 1 of the MSc in Endodontology. An additional 6 days of study, perfecting everything you have learned from the 10 day programme to OSCE standards.

Postgraduate Diploma

Year 2 of the MSc in Endodontology. 12 days of studying advanced topics such endodontic microscopy, innovations in endodontics, research methods and statistics.

MSc in Endodontology

Year 3 of the MSc in Endodontology and the final component for the Masters Degree. You’re given approximately 12 months to submit a dissertation based on an endodontic topic of your choosing. You’ll be appointed a personal supervisor to who will provide 1:1 coaching.