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Efficacy evaluation of a cordless ultrasonic unit in achieving reduction of bacterial load within a root canal system as compared to a conventional ultrasonic unit and negative pressure irrigation

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Figure

Table 2 CFU score percentages according to irrigationtechnique
Fig. 1 Post-treatment CFU counts quantified by five categories of growth on agar plates, corresponding to colony forming units per 0.1 mltransport medium, ranging from very heavy (score 5) to none (score 0)
Fig. 2 Negative control. Upon completion of instrumentation, NaOCl was inactivated with 5% sodium thiosulfate for 5 min followed by irrigationwith 5 mL of 17% EDTA for 1 min to ensure the complete removal of smear layer
Fig. 3 Positive control.fresh BHI with 2% glucose solution. The specimen root canals were inoculated with 100 Enterococcus faecalis (strain OG1RF) was cultured in 1 ml of brain-heart infusion (BHI) for 24 h and inoculated into 5 ml of μL of the suspension and incubated at 37° for 30 dayswith weekly medium change, ×15000

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