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Table 2 CFU score percentages according to irrigation technique

From: 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

CFU scoreEndoUltra™Satelec P5 boosterEndoVac1% NaOCl + standard needle irrigationPBS + standard needle irrigation
Score 5
Very heavy
> 10000
0.0%0.0%0.0%0.0%0.0%
Score 4
Heavy
1001–10000
0.0%0.0%0.0%33.3%100.0%
Score 3
Moderate
101–1000
10.0%5.0%0.0%0.0%0.0%
Score 2
Sparse
11–100
12.5%17.5%12.5%22.0%0.0%
Score 1
Very sparse
1–10
37.5%35.0%40/0%33.3%0.0%
Score 0
None
0
40.0%42.5%47.5%11.1%0.0%