highly significantP = 0.0001
Again, the mean mPlI was calculated at 0.79 ± 0.10 at 3 months in the present study, which later decreased to 0.73 ± 0.20 at 6 months and 0.54 ± 0.18 at 9 months of evaluation, respectively, with the results being statistically significant when compared between sixth and ninth months ( P = 0.0050), whereas statistically highly significant when compared between third and ninth months ( P = 0.0001) [ Table 2 ].