Table 2.
Descriptive analysis of the 9 properties of the manual toothbrush that effects on the plaque removal.
| n | PRR (%) | SD | n | PRR (%) | SD | n | PRR (%) | SD | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bristle stiffness | Soft | 55 | 33.9 | 9.0 | Bristle area (mm2) | 105.6 | 5 | 44.3 | 7.5 | Diameter of bristle (mm) | 0.10 | 5 | 34.5 | 2.1 |
| Semi-soft | 10 | 38.0 | 10.7 | 119.0 | 5 | 22.7 | 6.0 | 0.11 | 15 | 32.2 | 6.1 | |||
| Normal | 60 | 39.5 | 11.4 | 120.0 | 20 | 41.1 | 9.6 | 0.13 | 5 | 44.4 | 16.2 | |||
| Hard | 5 | 22.7 | 6.0 | 123.8 | 5 | 22.2 | 2.9 | 0.14 | 20 | 37.0 | 10.9 | |||
| Length of bristle (mm) | 8.5 | 10 | 33.1 | 12.0 | 134.0 | 5 | 40.6 | 7.6 | 0.15 | 20 | 36.5 | 8.7 | ||
| 9.0 | 20 | 42.3 | 9.6 | 140.0 | 30 | 39.2 | 10.1 | 0.16 | 5 | 32.3 | 3.4 | |||
| 9.5 | 15 | 40.0 | 9.2 | 144.5 | 20 | 36.1 | 4.8 | 0.17 | 40 | 33.8 | 13.3 | |||
| 10.0 | 10 | 37.6 | 7.7 | 150.0 | 5 | 39.5 | 8.8 | 0.19 | 15 | 41.9 | 6.2 | |||
| 10.5 | 15 | 40.4 | 7.5 | 199.5 | 5 | 33.2 | 11.1 | 0.20 | 5 | 47.6 | 7.3 | |||
| 10.8 | 5 | 27.5 | 3.1 | 228.0 | 5 | 27.5 | 3.1 | Form of brush | Flat | 75 | 37.2 | 10.2 | ||
| 11.0 | 15 | 31.4 | 4.7 | 232.8 | 5 | 36.0 | 7.0 | Dome | 10 | 43.4 | 7.5 | |||
| 11.5 | 10 | 41.5 | 15.4 | 243.8 | 5 | 44.4 | 16.2 | Sharp | 45 | 33.4 | 11.6 | |||
| 12.0 | 20 | 28.9 | 13.3 | 268.8 | 5 | 15.6 | 5.7 | Bristling step | Without | 85 | 35.6 | 11.8 | ||
| 12.5 | 5 | 37.4 | 3.3 | 271.3 | 10 | 38.0 | 10.7 | With | 45 | 37.9 | 8.6 | |||
| 13.4 | 5 | 36.0 | 7.0 | Number of tufts | 17 | 10 | 33.5 | 13.1 | Total Length (mm) | 162.0 | 5 | 22.2 | 2.9 | |
| Head area (mm2) | 178.5 | 5 | 44.3 | 7.5 | 22 | 10 | 31.4 | 11.1 | 168.0 | 20 | 36.1 | 4.8 | ||
| 181.7 | 5 | 40.6 | 7.6 | 23 | 10 | 38.7 | 11.2 | 169.0 | 30 | 39.2 | 10.1 | |||
| 190.0 | 5 | 22.2 | 2.9 | 24 | 60 | 38.9 | 8.5 | 170.0 | 10 | 33.5 | 13.1 | |||
| 200.0 | 10 | 43.4 | 7.5 | 30 | 5 | 39.5 | 8.8 | 178.0 | 5 | 39.5 | 8.8 | |||
| 204.3 | 5 | 22.7 | 6.0 | 34 | 5 | 44.4 | 16.2 | 179.0 | 10 | 38.7 | 11.2 | |||
| 208.0 | 10 | 38.7 | 11.2 | 37 | 5 | 33.2 | 11.1 | 180.0 | 10 | 43.4 | 7.5 | |||
| 210.0 | 20 | 36.1 | 4.8 | 38 | 15 | 37.3 | 9.4 | 181.0 | 5 | 40.6 | 7.6 | |||
| 230.0 | 5 | 39.5 | 8.8 | 39 | 5 | 27.5 | 3.1 | 183.0 | 5 | 27.5 | 3.1 | |||
| 270.0 | 30 | 39.2 | 10.1 | 48 | 5 | 15.6 | 5.7 | 190.0 | 20 | 31.2 | 13.3 | |||
| 305.0 | 5 | 33.2 | 11.1 | Repeat | 1 | 26 | 35.7 | 11.4 | 192.0 | 5 | 36.0 | 7.0 | ||
| 318.6 | 5 | 27.5 | 3.1 | 2 | 26 | 38.6 | 11.7 | 195.0 | 5 | 44.4 | 16.2 | |||
| 353.8 | 5 | 36.0 | 7.0 | 3 | 26 | 34.8 | 10.0 | |||||||
| 364.6 | 5 | 44.4 | 16.2 | 4 | 26 | 39.1 | 11.7 | |||||||
| 375.2 | 10 | 38.0 | 10.7 | 5 | 26 | 33.7 | 8.7 | |||||||
| 414.5 | 5 | 15.6 | 5.7 | |||||||||||
Plaque removal rate was abbreviated as PRR. Standard Deviation was abbreviated as SD.