Table 5. Comparison of passive mouth opening between laser and control groups at study time points .

	Control (mm)			Laser (mm)			Mann-Whitney U test
Times	Mean±SD	Median	Min-Max	Mean±SD	Median	Min-Max	p
Week 1	37.6±10.1	41	16-54	37.6±7.5b	40	25-50	0.807
Week 2	36.7±12.8	42	3-54	37.6±8.9b	39	22-52	0.828
Week 3	39.4±9.6	41.5	22-54	38.4±8.9a,b	40.5	18-48	0.735
Week 4	39.0±9.3	42	22-54	40.0±8.7a	42.5	18-50	0.704
Week 12	39.7±9.5	42	22-54	41.3±7.3a	43	25-50	0.724
Friedman p value	0.058			<0.001
SD: Standard deviation; Min: Minimum; Max: Maximum; a, b: Lowercase superscript letters with mean values indicate differences visual analog scale scores at study time points within the groups according to adjusted p value (p<0.05).