Table 3: Scores of OHRQoL based on OHIP-14.

Group	IOTN Grade	Mean scores
Experimental	3 (Moderate)	1.12 ± 1.69
	4 (Severe)	3.88 ± 3.22
Control	3 (Moderate)	8.25 ± 3.88
	4 (Severe)	20.76 ± 6.64
P Value		0.001