Table 3 Intra-oral features (intra-arch characteristics) of malocclusion within gender groups
Parameters | Upper arch | Lower arch | |||||||
|---|---|---|---|---|---|---|---|---|---|
Gender N (%) | Total (N = 606) | Gender N (%) | Total (N = 606) | ||||||
Male N = 280 | Female N = 326 | X2 (P) | N (%) | Male N = 280 | Female N = 326 | X2 (P) | N (%) | ||
Crowding | None | 140* (50.0) | 123* (38.0) | 10.12 (0.018)* | 263 (43.4) | 107 (38.0) | 125 (38.3) | 1.10 (0.78) | 232 (38.3) |
Mild < 4 mm | 59* (21.0) | 96* (29.0) | 155 (25.6) | 103 (37.0) | 109 (33.4) | 212 (35.0) | |||
Moderate 4–8 mm | 41 (15.0) | 53 (16.0) | 94 (15.5) | 37 (13.0) | 50 (15.3) | 87 (14.4) | |||
Severe > 8 mm | 40 (14.0) | 54 (17.0) | 94 (15.5) | 33 (12.0) | 42 (13.0) | 75 (12.4) | |||
Deflection of contact points | None | 75 (27.0) | 74 (23.0) | 6.73 (0.15) | 149 (24.6) | 58 (21.0) | 69 (21.0) | 5.17 (0.27) | 127 (21.0) |
< 1 mm | 47 (17.0) | 37 (11.0) | 84 (13.9) | 74 (26.0) | 76 (23.3) | 150 (24.8) | |||
1–2 mm | 56 (20.0) | 73 (22.0) | 129 (21.3) | 59 (21.0) | 76 (23.3) | 135 (22.3) | |||
2–4 mm | 51 (18.0) | 67 (21.0) | 118 (19.5) | 53 (19.0) | 47 (14.4) | 100 (16.5) | |||
> 4 mm | 51 (18.0) | 75 (23.0) | 126 (20.8) | 36 (13.0) | 58 (18.0) | 94 (15.5) | |||
Spacing | None | 185* (66.0) | 247* (76.0) | 6.92 (0.031)* | 432 (71.3) | 227 (81.0) | 267 (82.0) | 2.23 (0.33) | 494 (81.5) |
Localized | 52 (19.0) | 43 (13.0) | 95 (15.7) | 25 (9.00) | 36 (11.0) | 61 (10.1) | |||
Generalized | 43 (15.0) | 36 (11.0) | 79 (13.0) | 28 (10.0) | 23 (7.00) | 51 (8.40) | |||
Centerline (CL) | Centered | 238 (85.0) | 260 (80.0) | 2.83 (0.093) | 498 (82.2) | 166 (59.0) | 191(59.0) | 0.03 (0.86) | 357 (58.9) |
CL shift | 42 (15.0) | 66 (20.0) | 108 (17.8) | 114 (41.0) | 135 (41.0) | 249 (41.1) | |||