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Mean plaque accumulation scores and PI for toothbrush groups
| Surfaces | Single-headed mean (SD) | Triple-headed mean (SD) | T-test | P-value |
|---|---|---|---|---|
| Mean plaque accumulation scores | ||||
| Buccal | 10.47 (3.86) | 7.98 (4.07) | -6.8 | <0.001* |
| Lingual | 8.12 (4.03) | 4.29 (3.26) | -3.8 | <0.001* |
| Buccal and lingual | 18.59 (7.15) | 12.27 (6.68) | -5.76 | <0.001* |
| Plaque index score | ||||
| Plaque index | 3.10 (1.19) | 2.05 (1.11) | -5.711 | <0.001* |
