Effect of final irrigation with sodium hypochlorite at different temperatures on postoperative pain level and antibacterial activity: a randomized controlled clinical study.

OBJECTIVE: To evaluate the effect of final irrigation of root canals with NaOCl solution at different temperatures on postoperative pain level and antimicrobial activity. METHODOLOGY: 45 patients were randomly divided into three groups using a web program according to the irrigation selected: NaOCl 2ºC, NaOCl 25ºC and NaOCl 45ºC. First root canal samples were collected before treatment (S1). After chemo-mechanical preparation, final irrigation was performed with the selected irrigant (NaOCl 2ºC, NaOCl 25ºC and NaOCl 45ºC) and second samples were collected (S2). Samples were subjected to quantitative real-time polymerase chain reaction to evaluate the levels of total bacteria. The root canal treatments were completed and the participants were given instructions to record postoperative pain levels at 24, 48 and 72 hours, 5 days and 1 week after treatment using a visual analog scale (VAS). RESULTS: The reduction in the number of total bacterial cell equivalents from S1 to S2 was statistically significant in all groups (p<0.001). The NaOCl 2˚C group reported significantly less postoperative pain than the NaOCl 45˚C group (p<0.05). Postoperative analgesic intake was significantly higher in the NaOCl 45˚C group than in the NaOCl 2˚C group (p<0.05). CONCLUSION: We conclude that final irrigation with NaOCl at different temperatures results in similar antibacterial effectiveness. Final irrigation with cold NaOCl (2˚C) is better than NaOCl 45˚C when comparing postoperative pain levels.

Effect of calcium hydroxide alone or in combination with ibuprofen and ciprofloxacin on postoperative pain and periapical prostaglandin E2 level: A randomized clinical study.

AIM: The aim of the present study was to compare pure Ca(OH)2, Ca(OH)2 + ibuprofen and Ca(OH)2 + ciprofloxacin in terms of postoperative pain and prostaglandin E2 (PGE2) level in previously treated teeth with periapical lesions. MATERIALS AND METHODS: Sixty-six patients were randomly assigned into 3 groups according to the intracanal medication (Ca(OH)2, Ca(OH)2 + ibuprofen and Ca(OH)2 + ciprofloxacin). After removing gutta-percha from the root canals, the PGE2 sample collection was obtained by introducing three sterile paper points into the root canals through the root apex (2 mm). Selected intracanal medicament was placed into the root canal and the participants were told to record postoperative pain levels at 24, 48, and 72 h and on 1 week after treatment using visual analog scale (VAS). At the second appointment, the medicaments were removed and second sampling was performed using the same method. The PGE2 levels measured by enzyme-linked immunosorbent assay kits, and the data were statistically analyzed. RESULTS: All the tested Ca(OH)2 pastes were found to be significantly effective in lowering the preoperative PGE2 levels. However, intergroup analyses revealed that the Ca(OH)2 + ciprofloxacin group had the highest effectiveness in lowering PGE2 with a significant difference when compared with the pure Ca(OH)2 group. There was no statistically significant difference among the groups in terms of pre- and post-operative pain levels. CONCLUSION: The Ca(OH)2 + ciprofloxacin medication is more effective than the pure Ca(OH)2 medication in lowering periapical PGE2 level. However, addition of ibuprofen or ciprofloxacin to the Ca(OH)2 paste does not provide extra benefit in terms of post-operative pain relief.

Effect of final irrigation with sodium hypochlorite at different temperatures on postoperative pain level and antibacterial activity: a randomized controlled clinical study

Abstract Objective To evaluate the effect of final irrigation of root canals with NaOCl solution at different temperatures on postoperative pain level and antimicrobial activity. Methodology 45 patients were randomly divided into three groups using a web program according to the irrigation selected: NaOCl 2ºC, NaOCl 25ºC and NaOCl 45ºC. First root canal samples were collected before treatment (S1). After chemo-mechanical preparation, final irrigation was performed with the selected irrigant (NaOCl 2ºC, NaOCl 25ºC and NaOCl 45ºC) and second samples were collected (S2). Samples were subjected to quantitative real-time polymerase chain reaction to evaluate the levels of total bacteria. The root canal treatments were completed and the participants were given instructions to record postoperative pain levels at 24, 48 and 72 hours, 5 days and 1 week after treatment using a visual analog scale (VAS). Results The reduction in the number of total bacterial cell equivalents from S1 to S2 was statistically significant in all groups (p<0.001). The NaOCl 2˚C group reported significantly less postoperative pain than the NaOCl 45˚C group (p<0.05). Postoperative analgesic intake was significantly higher in the NaOCl 45˚C group than in the NaOCl 2˚C group (p<0.05). Conclusion We conclude that final irrigation with NaOCl at different temperatures results in similar antibacterial effectiveness. Final irrigation with cold NaOCl (2˚C) is better than NaOCl 45˚C when comparing postoperative pain levels.

Effect of Calcium Hydroxide Alone or in Combination with Ibuprofen and Ciprofloxacin on Nuclear Factor Kappa B Ligand and Osteoprotegerin Level in Periapical Lesions: A Randomized Controlled Clinical Study.

INTRODUCTION: The aim of the present study was to evaluate the effects of calcium hydroxide (Ca[OH]2), Ca(OH)2 + ibuprofen, and Ca(OH)2 + ciprofloxacin in terms of receptor activator of nuclear factor kappa B ligand (RANKL) and osteoprotegerin (OPG) levels in asymptomatic periapical lesions. METHODS: Sixty-six patients were randomly divided into 3 groups using a Web program according to the medication selected: Ca(OH)2, Ca(OH)2 + ibuprofen, and Ca(OH)2 + ciprofloxacin. After removing gutta-percha from the root canals, the RANKL and OPG samples were taken from the interstitial fluid of the apical tissues using 3 paper points. At the second appointment, medicaments were removed, and second sampling was performed using the same method. The RANKL and OPG levels were measured by the enzyme-linked immunosorbent assay, and the RANKL/OPG ratio was calculated. RESULTS: According to the intragroup analysis, there were no statistically significant differences between the preoperative and postoperative levels of the RANKL/OPG ratio in any of the groups. Intergroup analyses showed that there were no statistically significant differences among the Ca(OH)2, Ca(OH)2 + ibuprofen, Ca(OH)2 + ciprofloxacin groups in terms of the percentage change in RANKL/OPG levels before and after treatment. CONCLUSIONS: Within the limitations of the present study, it can be concluded that addition of ibuprofen or ciprofloxacin to Ca(OH)2 paste does not provide any extra benefit in terms of lowering RANKL and OPG levels.