Table 5.
The root canal morphology in mandibular and maxillary anterior teeth and its relationship with ethnicity according to Ahmed classification
| Teeth position | Ethnicity (n = 570) | New classification system | Chi-square value | (d) | p-value | |||
|---|---|---|---|---|---|---|---|---|
| 1TN1 | 1TN1-2-1 | 1TN1-2 | 1TN1-2-1-2-1 | |||||
| Maxillary | ||||||||
| Central incisors | Saudi | 452 | 9 | |||||
| Indian | 40 | 2 | ||||||
| Pakistani | 22 | 1 | 4.016 | 5 | 0.547 | |||
| Egyptian | 16 | 0 | ||||||
| Syrian | 16 | 0 | ||||||
| Philippines | 12 | 0 | ||||||
| Lateral incisors | Saudi | 454 | 8 | |||||
| Indian | 42 | 3 | ||||||
| Pakistani | 17 | 2 | 50.110 | 5 | 0.001* | |||
| Egyptian | 16 | 0 | ||||||
| Syrian | 16 | 0 | ||||||
| Philippines | 12 | 0 | ||||||
| Canines | Saudi | 452 | 9 | |||||
| Indian | 41 | 1 | ||||||
| Pakistani | 22 | 1 | 4.016 | 5 | 0.547 | |||
| Egyptian | 16 | 0 | ||||||
| Syrian | 16 | 0 | ||||||
| Philippines | 12 | 0 | ||||||
| Mandibular | ||||||||
| Central incisors | Saudi | 366 | 40 | 5 | ||||
| Indian | 60 | 14 | 1 | |||||
| Pakistani | 25 | 10 | 1 | 35.354 | 10 | 0.001* | ||
| Egyptian | 16 | 4 | 0 | |||||
| Syrian | 14 | 4 | 0 | |||||
| Philippines | 8 | 2 | 0 | |||||
| Lateral incisors | Saudi | 330 | 116 | 18 | ||||
| Indian | 17 | 16 | 10 | |||||
| Pakistani | 16 | 8 | 7 | 45.047 | 10 | 0.001* | ||
| Egyptian | 12 | 4 | 0 | |||||
| Syrian | 8 | 0 | 0 | |||||
| Philippines | 8 | 0 | 0 | |||||
| Canines | Saudi | 424 | 22 | 10 | 1 | |||
| Indian | 37 | 8 | 2 | |||||
| Pakistani | 20 | 4 | 2 | 29.981 | 10 | 0.001* | ||
| Egyptian | 12 | 2 | 0 | |||||
| Syrian | 14 | 2 | 0 | |||||
| Philippines | 8 | 2 | 0 | |||||
Significant value < 0.05; Cross Tab, Chi Square Test
TN, tooth number; d-difference