Table 4. Comparison of maximal mouth opening between laser and control groups at study time points.

	Control group (mm)			Laser group (mm)			Mann-Whitney U test
Times	Mean±SD	Median	Min-Max	Mean±SD	Median	Min-Max	p
Week 1	41.9±9.5b	45	20-56	49.55±10.1b	51.5	28-65	0.020
Week 2	43.2±8.7a,b	46	23-57	49.25±10.7b	51	25-66	0.042
Week 3	43.2±9.7a,b	46	24-56	48.75±10.7b	50	24-65	0.031
Week 4	43.6±9.6a,b	47	26-56	50.75±10.2a	51.5	24-67	0.027
Week 12	43.9±9.4a	47.5	25-56	51.85±8.7a	51.5	30-67	0.010
Friedman p value	0.010			<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).