Antibacterial Effects of Erbium Chromium Laser along with/without Silver Nanoparticles in Root Canals Infected by Enterococcus faecalis

Table 1

Descriptive values of E. faecalis colonies before and after intervention and reduction percentage of bacterial colonies in each studied group.

Groups	Time	Minimum	Maximum	RCC %	value
Sodium hypochlorite	Before	10^3 × 12	10^3 × 27	100	0.001>
	After	0	0
Silver nanoparticle	Before	10^3 × 5	10^3 × 60	83.15	0.001>
	After	0	10^3 × 8
Erbium chromium laser	Before	10^3 × 11	10^3 × 36	47.90	0.001>
	After	10^3 × 3	10^3 × 30
Silver nanoparticles and erbium chromium lasers	Before	10^3 × 4	10^3 × 49	64.72	0.001>
	After	0	10^3 × 13
Negative control (washing with normal saline)	Before	10^3 × 3	10^3 × 58	49	0.005>
	After	10^3	10^3 × 41

Wilcoxon test for determining significant differences in bacterial count before and after intervention.