Table 6: Plaque Index (PI) based on Silness and Löe according to denture support.

Denture support Silness /LÖe Index Total P-value
0 1 2 3
N % N % N % N % N %
Quadrangular - - 3 50.0 3 50.0 - - 6 100.0 KW=7.39
P=0.116
Triangular 5 23.8 16 76.2 - - - - 21 100.0
Linear 12 27.3 24 54.5 6 13.6 2 4.5 44 100.0
One point - - 3 75.0 1 25.0 - - 4 100.0
Attachments 8 50.0 8 50.0 - - - - 16 100.0
Total 25 27.5 54 59.3 10 11.0 2 2.2 91 100.0