Table 2. Mean histological grade and standard deviation of groups.

	Control Group	Study Group	P
	Mean±SD	Mean±SD
Fibrosis	3.6±0.7	2.8±0.7	0.026*
Acute inflammation	0.4±0.5	0.1±0.3	0.225
Chronic inflammation	0.9±0.4	0.9±0.3	0.935
Vascular proliferation	1±0.5	1.1±0.6	0.694
SD: Standard deviation.