Table 1.

Total bacterial load in CFU/mL in the study groups at the different time points for sample collection.

	Baseline	Root Canal Preparation	Adjunctive Disinfection
NaOCl (Group a)
Mean	5.74 × 106	5.14 × 105	1.98 × 105
Standard Deviation	2.32 × 107	1.26 × 106	5.54 × 105
Median	1.84 × 105	9.25 × 104	4.03 × 104
Minimum	3.06 × 104	8.81 × 102	1.98 × 102
Maximum	1.01 × 108	4.48 × 106	2.36 × 106
Interquartile Range	9.75 × 104	1.30 × 105	4.59 × 104
n	19	19	19
Laser Irradiation (Group b)
Mean	2.97 × 106	5.12 × 105	2.27 × 105
Standard Deviation	9.75 × 106	1.59 × 106	7.05 × 105
Median	2.03 × 105	9.81 × 104	5.43 × 104
Minimum	1.14 × 103	1.02 × 103	5.79 × 102
Maximum	4.18 × 107	7.00 × 106	3.13 × 106
Interquartile Range	2.36 × 105	1.85 × 105	1.05 × 105
n	19	19	19
NaOCl + Laser Irradiation (Group c)
Mean	1.72 × 106	1.89 × 105	5.64 × 104
Standard Deviation	3.94 × 106	5.06 × 105	1.00 × 105
Median	2.00 × 105	4.83 × 104	2.11 × 104
Minimum	1.11 × 104	2.29 × 103	7.31 × 102
Maximum	1.49 × 107	2.26 × 106	4.18 × 105
Interquartile Range	1.50 × 105	9.24 × 104	3.52 × 104
n	19	19	19