Table 2.

Multiple Comparison between control and experimental groups (Dependent Variable: Test Groups; Dunnett t (2-sided) ^a

(I) Group	(J) Group	Mean difference (I-J) (Sd)	Significant difference
B	Control A	13.74838*(0.94205)	0.000
C	Control A	65.18348* (0.94205)	0.000
D	Control A	48.98482* (0.94205)	0.000

A) Conventional irrigation with 5 mL of 17% EDTA, B) Passive ultrasonic irrigation with 5 mL of 17% EDTA, C) Er.Cr:YSGG induced photoacoustic streaming with 5 mL of 17% EDTA, D) Er.Cr:YSGG induced photoacoustic streaming with 5 mL 5.25% NaOCl. (*The mean difference is significant at 0.05); a. Dunnett t-tests treat one group as control, and compare all the other groups against it