Table 1 Criteria for the classification of collected GCF.

GI

0

1

2

3

Normal gingiva

mild inflammation, slight change in color and slight edema, no BOP

moderate inflammation, redness, edema, glazing, BOP

severe inflammation, marked redness and edema, ulceration, tendency toward spontaneous bleeding

PD

1 mm

≤ 3 mm

3 - 7 mm

≥ 7 mm

CAL

0

0

< 5 mm

≥ 5 mm

Evidence of bone loss on radiograph

-

-

+

+