Reaction of Rat Subcutaneous Connective Tissue to Resin Composites Polymerized with Different Light Curing Units and Different Lightening Methods

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