Table 11.
Correlation of toothbrushing habit with abrasion/erosion
| Toothbrushing habits |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Frequency |
Total n (%) | Method |
Total n (%) | Bristle type |
Total n (%) | ||||||
| Once daily n (%) | Twice daily n (%) | H n (%) | H + V n (%) | V n (%) | Soft n (%) | Medium n (%) | Hard n (%) | ||||
| Present | 57 (81.4) | 13 (18.6) | 70 (100) | 45 (64.5) | 19 (27.1) | 6 (8.6) | 70 (100) | 4 (5.7) | 56 (80.0) | 10 (14.3) | 70 (100) |
| Absent | 228 (68.3) | 106 (31.7) | 334 (100) | 176 (52.7) | 114 (34.1) | 44 (13.2) | 334 (100) | 49 (14.7) | 274 (82.0) | 11 (3.3) | 334 (1,000 |
| Total | 285 (70.4) | 119 (29.6) | 404 (100) | 221 (54.6) | 133 (32.8) | 50 (12.3) | 404 (100) | 53 (13.1) | 330 (81.5) | 21 (5.2) | 404 (100) |
| χ2* | 409.8 | 408.2 | 422.0 | ||||||||
| P | 0.001, S | 0.008, S | <0.001, HS | ||||||||
*
Chi-square test. H, horizontal; H + V, horizontal + vertical; V, vertical; HS, highly significant; S, significant.