Table 1: Comparison of OHI-S score, Russell’s Periodontal Index and gingival bleeding score between study and control group.

NMeanSDP value

OHI-S IndexControl2502.4550.84460.001*
Substance abusers2502.7040.8228
Russell’s IndexControl250 2.5900.8167<0.001**
Substance abusers2503.6831.4022
Bleeding on probingControl25022.705.139<0.001**
Substance abusers2509.697.209

**level of statistical significance of less than  .001 with respect to Bleeding index and Russel's periodontal index, *the statistical significance of equal to  .001 with respect to OHI-S in relation to substance abuse and clinical parameters governing periodontal disease.