Laser-Assisted Orthodontic Tooth Movement in Saudi Population: A Prospective Clinical Intervention of Low-Level Laser Therapy in the 1st Week of Pain Perception in Four Treatment Modalities

Table 2

Kruskal–Wallis H Test comparison among all groups.

Groups	Mean	SD	Minimum	Maximum	Mean rank
After 4 hours
LLLT + SL	3.325	1.391	1.500	5.200	11.190
NLLLT + SL	4.463	1.041	2.900	5.800	18.310
LLLT + Conv.	3.863	1.144	2.000	5.900	14.380
NLLLT + Conv.	5.225	1.694	3.000	7.800	22.130
Total	4.219	1.463	1.500	7.800
After 24 hours
LLLT + SL	3.575	1.059	2.000	5.000	9.560
NLLLT + SL	5.638	1.377	3.500	7.500	22.250
LLLT + Conv.	4.088	1.198	2.400	6.500	11.940
NLLLT + Conv.	5.600	1.196	3.200	7.200	22.250
Total	4.725	1.479	2.000	7.500
After 3 days
LLLT + SL	2.313	0.669	1.500	3.200	7.190
NLLLT + SL	3.538	0.825	2.200	4.500	16.690
LLLT + Conv.	3.675	1.250	2.200	6.200	16.880
NLLLT + Conv.	4.863	1.107	2.600	6.000	25.250
Total	3.597	1.314	1.500	6.200
After 7 days
LLLT + SL	1.188	0.541	0.500	2.200	4.940
NLLLT + SL	2.800	0.545	1.800	3.400	17.940
LLLT + Conv.	3.188	1.197	1.600	5.500	20.560
NLLLT + Conv.	3.450	0.898	2.300	4.600	22.560
Total	2.656	1.198	0.500	5.500