Laser Treatment for Melanin Gingival Pigmentations: A Comparison Study for 3 Laser Wavelengths 2780, 940, and 445 nm

Table 1

Results of the time recorded of duration for the procedure in minutes.

	Minimum	Maximum	Mean ± SD
Group 1	20.00	29.00	24.60 ± 3.66
Group 2	10.00	15.00	12.40 ± 1.50
Group 3	13.00	17.00	15.10 ± 1.45
Total	10.00	29.00	17.37 ± 5.82