Table 2 evolution of mean PI after a single brushing for the hybrid and oscillating-rotating powered toothbrushes; comparison of devices’ efficacy
PI | Device | Variation ∆ (t1-t0) (mean ± SEM) | ∆% | Significance (paired t-test) | % of subjects with a positive effect |
|---|---|---|---|---|---|
Global score | Hybrid | −0.5 ± 0.0 | −45% | p < 0.0001 | 100% |
Oscillating-rotating | −0.5 ± 0.0 | −43% | p < 0.0001 | 100% | |
Comparison | 0.0 ± 0.2 | p = 0.5474 | (unpaired t-test) | ||
Labial side | Hybrid | −0.6 ± 0.0 | −53% | p < 0.0001 | 100% |
Oscillating-rotating | −0.6 ± 0.0 | − 52% | p < 0.0001 | 100% | |
Comparison | 0.0 ± 0.2 | p = 0.9273 | (unpaired t-test) | ||
Lingual side | Hybrid | −0.5 ± 0.0 | −37% | p < 0.0001 | 100% |
Oscillating-rotating | −0.4 ± 0.0 | −34% | p < 0.0001 | 100% | |
Comparison | −0.05 ± 0.2 | p = 0.3022 | (unpaired t-test) |