Table 1 Periodontal and dental parameters.

PPD

Distance between the gingiva and the bottom of the periodontal sulcus, expressed in millimeters

GR

Distance between the gingiva and enamel-cemetum-junction, expressed in millimeters

CAL

Addition of PPD and GR

PBS

Classified in increasing order of inflammation (grade 0-5), based on the strength of bleeding after gentle probing of the gingiva

0 = healthy gingiva; no bleeding

1 = edematous, reddened gingiva; no bleeding

2 = bleeding without flow

3 = bleeding with flow along gingival margin

4 = copious bleeding

5 = severe inflammation, marked redness and edema, tendency for spontaneous bleeding

PSI

Divided into five codes and estimates the clinical parameters of plaque, bleeding and pocket depth.

Code 0 = colored area of the probe remains visible in all the pockets of the sextant. No calculus and no defective margins on restorations. No bleeding is evident on probing.

Code 1 = similar to Code 0, but bleeding is detected on probing.

Code 2 = calculus, above or below the marginal gingiva, is detected. Also used to indicate defective restorative margins. Colored area of the probe is still completely visible.

Code 3 = colored area of the probe is only partly visible in at least one pocket of the sextant indicating a PPD between 3.5 mm and 5.5 mm.

Code 4 = colored area of the probe is not visible in at least one pocket of the sextant, indicating a PPD more than 5.5 mm.

DMF-T

Total count of teeth which are decayed, missing and filled (except third molars)