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Introduction: The rotary systems have found a common application in the clinical practice for the endodontic therapies. Hence, we compared three recent endodontic systems for the comparison of the dentine removal and the apical transportation particularly in the curved canals. Methods: Oneshape, Pro Taper Next, and Edgefile X3 were the three systems that were compared. Thirty maxillary mesio buccal canals of the human permanent teeth were compared due to its curved nature. The volume of dentin removed and apical transportation (mm) were measured using micro-computed tomographic imaging (mm). Both the coronal section and the entire canal length had their dentin removed in accordance with measurements. Total dentine removed, coronal dentine removed, and the canal transportations were compared for the three rotary file systems. The values were compared with appropriate statistical tests for evaluating the significance. Results: There was no statistically significant difference between the three file systems for the dentin removed. The mean canal transportation was 0.33 ± 0.12, 0.21 ± 0.25, and 0.23 ± 0.21 mm, respectively, for Oneshape, Pro Taper Next, and Typhoon CM. In terms of statistics, there were no appreciable variations among the three rotary tools for apical transfer. Conclusions: The three rotary systems were comparable for the apical transportation and the dentine removal. Despite variations in the magnitude of apical enlargements, none of the instrumentation methods detected apical transportation.

Aim: The aim was to evaluate the antimicrobial efficacy of herbal extracts of Origanum vulgare (Oregano) and Vaccinium (Cranberry) for disinfection of gutta-percha (GP) and their effects on surface of GP. Methods: A total of 84 GP points were divided into three groups. Group A (36 cones) was artificially contaminated by Staphylococcus aureus (SA), Group B (36 cones) by Enterococcus faecalis (EF), and Group C (12 cones) by both the organisms each. After the contamination of all the groups, all the points in Groups A and B were divided into three groups of 12 each and were disinfected by four different concentrations of Origanum vulgare and Vaccinium extracts, contaminated but not disinfected and was used as control. The Group C GP points were all disinfected by 3% sodium hypochlorite (NaOCl). All the disinfected and the control group samples were then incubated to detect bacterial growth. Minimum inhibitory concentration and minimum bactericidal concentration were determined for all the groups of O. vulgare and Vaccinium at all the concentrations. P < 0.05. Results: The present study showed a significantly higher bacteriostatic and bactericidal activity with O. vulgare extract followed by NaOCl as compared to Vaccinium extract against SA and EF. Furthermore, higher surface alterations were seen on GP disinfected with NaOCl and the least with O. vulgare. Conclusion: Considering the amount of surface changes caused by NaOCl on GP when used as a disinfecting solution, O. vulgare extract is a suitable herbal substitute for the same which shows comparatively much lesser topographic changes.