. 2022 Dec 1;48(1):e1. doi: 10.5395/rde.2023.48.e1

Table 2. Values of the dentinal penetration of sodium hypochlorite (μm) in each root third, in groups with and without root canal preparation, after final irrigation protocols.

Final irrigation protocol	With root canal preparation			Without root canal preparation
Final irrigation protocol	Cervical	Middle	Apical	Cervical	Middle	Apical
CNI	80.9 ± 34.1^a	74.5 ± 32.5^a	70.5 ± 36.6^a	108.5 ± 17.9^a	118.7 ± 22.4^a	79.3 ± 21.4^b
PUI	92.2 ± 34.9^a	77.4 ± 36.5^a	57.8 ± 30.4^a	119.1 ± 45.7^a	107.6 ± 33.2^a	58.3 ± 30.9^b
OC	71.0 ± 35.3^a	102.8 ± 41.5^a	64.8 ± 30.5^a	134.9 ± 26.1^a	123.7 ± 39.4^a,b	93.4 ± 31.7^b

Values are presented as mean ± standard deviation.

CNI, conventional needle irrigation; PUI, passive ultrasonic irrigation; OC, Odous Clean.

^*Different lowercase letters indicate statistical differences in lines.