Table 3.

Criteria for Scaling of inflammation degrees.

No inflammation (Grade 0)	Mild inflammation (Grade I)	Moderate inflammation (Grade II)	Severe inflammation (Grade III)
No inflammatory cell	Presence of macrophages and/or plasma cells	Presence of macrophages and plasma cells	High density of inflammatory cells
Fibroblasts > 30	Inflammatory cells < 30	Accumulations of granulocytes and/or lymphocytes	Inflammatory cells ≥ 60
		30 ≤ Inflammatory cells < 60
Mature fibrous tissue with many collagen fibers	10 < fibroblasts < 30	5 < Fibroblasts < 9	Local necrosis areas
	Immature fibrous tissue with few collagen fibers		1 < Fibroblasts < 4