Table 3 Results of chi-square test with and without root resorption of different studied predictors
Variable | Category | With resorption No. (%) | Without resorption No. (%) | P value |
|---|---|---|---|---|
Alignment of incisors | Spaced | 8 (57.1) | 6 (42.9) | 0.099 |
Aligned | 76 (79.2) | 20 (20.8) | ||
Crowded | 4 (100) | 0 (0) | ||
Maxillary deciduous canine | Extracted | 43 (84.3) | 8 (15.7) | 0.157 |
Present with resorption | 35 (74.5) | 12 (25.5) | ||
Present without resorption | 10 (62.5) | 6 (37.5) | ||
Root morphology of first premolar | Single | 11 (100) | 0 (0) | 0.078 |
Separated | 48 (78.7) | 13 (21.3) | ||
Fused | 29 (69) | 13 (31) | ||
Canine rotation | Mesiopalatal | 50 (87.7) | 7 (12.3) | 0.013 |
Distopalatal | 38 (66.7) | 19 (33.3) | ||
Contact relationship | No contact | 0 (0) | 25 (100) | 0.001 |
With central incisors | 1 (50) | 1 (50) | ||
With lateral incisors | 18 (100) | 0 (0) | ||
With first premolars | 6 (100) | 0 (0) | ||
With central and lateral incisors | 23 (100) | 0 (0) | ||
With lateral incisors and first premolars | 28 (100) | 0 (0) | ||
With centrals, laterals incisors and first premolars | 12 (100) | 0 (0) | ||
Area of contact | No contact | 1 (3.8) | 25 (96.2) | 0.001 |
Cervical lateral incisors | 2 (66.7) | 1 (33.3) | ||
Middle lateral incisors | 20 (100) | 0 (0) | ||
Apical lateral incisors | 28 (100) | 0 (0) | ||
Middle central, apical lateral incisors | 5 (100) | 0 (0) | ||
Middle lateral incisors, apical first premolar | 24 (100) | 0 (0) | ||
Middle central, lateral incisors and apical first premolar | 8 (100) | 0 (0) |