Table 3. The Mean Dentin Hypersensitivity Scores at Different Intervals After the TREATMENT in the 3 Groups .

Interval	810-nm Laser		660-nm Laser		Control		P Value
	Mean	SD	Mean	SD	Mean	SD
One week after the intervention	2.5	1.03	3.9	1.01	8.2	1.6	<0.001
One month after the intervention	1.5	0.9	3.1	1.1	7.8	1.7	<0.001
Two months after the intervention	0.8	0.7	2.2	0.8	7.8	1.9	<0.001