Table 2 Comparison of DMFT and OHI-S means by IOTN group
Index on orthodontic treatment need (DHC) | I-Gender N (%) | Total (N = 606) | II-Overall OH indices | |||
|---|---|---|---|---|---|---|
Males (N = 280) | Females (N = 326) | N (%) | DMFT Mean (SD) | OHI-S Mean (SD) | ||
Grades and treatment needs | ||||||
 Grade 1 | No need | 53 (19) | 49 (15) | 102 (16.8) | 3.85 (2.55) | 1.09*α¥ (0.57) |
 Grade 2 | Little need | 41 (15) | 53 (16) | 94 (15.5) | 4.55 (3.08) | 1.34 (0.72) |
 Grade 3 | Borderline need | 81 (29) | 82 (25) | 163 (26.9) | 4.05 (2.90) | 1.33* (0.76) |
 Grade 4 | Definitive need | 88 (31) | 123 (38) | 211 (34.8) | 4.63 (3.29) | 1.44α (0.90) |
 Grade 5 | 17 (6) | 19 (6) | 36 (5.9) | 4.39 (3.39) | 1.47¥ (0.80) | |