Table 2.

“Classification of cellular inflammatory infiltrate” “Adapted with permission from Ref. [21] and ISO 7405:2018”.

Inflammatory Infiltrate	Characterization of Inflammatory Infiltrate
Grade 0	“No inflammatory signs and no presence or with the appearance of a few inflammatory cells in the pulp area corresponding to the exposure zone”
Grade 1	“Slight inflammatory infiltrate with the presence of cells, such as polymorphonuclear leukocytes (PMNL) and mononuclear leukocytes (MNL)”
Grade 2	“Moderate cellular inflammatory infiltrate involving the coronary pulpal tissue”
Grade 3	“Severe cellular inflammatory infiltrate involving the coronary pulp tissue or with abscess characteristics”