TABLE 3.
Morphological symmetry of mandibular incisor teeth included in the study using Vertucci (14) and Ahmed et al. (13) classification
| Root canal configurationsa Side 1/Side 2 |
Central Incisors | Lateral incisors | ||||||
|---|---|---|---|---|---|---|---|---|
| nb | % | (95%-CI)c | Kappa (95% CI)d |
n | % | (95%-CI) | Kappa (95% CI) |
|
| Configurations | 0.79 (0.71-0.87) | 0.68 (0.58-0.78) | ||||||
| Both type I (’MI1) | 140 | 61.1 | 0.82 (0.74-0.90) | 137 | 59.8 | 0.69 (0.58-0.79) | ||
| Both type III OMI1-2-1) | 60 | 26.2 | 0.78 (0.69-0.86) | 54 | 23.6 | 0.67 (0.57-0.78) | ||
| Both type V (’MI1-2) | 3 | 1.3 | NCe | 2 | 0.9 | NC | ||
| Both VNC (’MI1-2-1-2-1-2) | 2 | 0.9 | NC | - | - | NC | ||
| Both VNC (1MI1-2-3-2-1) | 18 | 7.9 | NC | - | - | NC | ||
| I/III (1MI1/1MI1-2-1) | 18 | 7.9 | - | 30 | 1 3.1 | - | ||
| I/V (1MI1/1MI1-2) | 1 | 0.4 | - | 1 | 0.4 | - | ||
| I/VNC (1MI1/1MI1-2-1-2-1) | - | - | - | 1 | 0.4 | - | ||
| III/VNC (1MI1-2-1/1MI1-2-1-2-1) | 4 | 1.7 | - | 2 | 0.9 | - | ||
| VNC/VNC (1MI1-2-1-2-1/1MI1-2-1-2-1-2) | - | - | - | 2 | 0.9 | - | ||
| Same configuration | 206 | 90.0 | (86.1-93.8) | 1 93 | 84.3 | (79.6-89.0) | ||
| Different configurations | 23 | 10.0 | (6.1-13.9) | 36 | 1 5.7 | (11.0-20.4) | ||
a
: "Both" means a patient with both incisors having the same root canal configuration: " / " is used to separate incisors with different configurations, b: Incisors pair, c: 95%-Confidence Interval, calculated with CIA v.1.0 statistical program, d: Kappa and 95% Confidence-Interval, calculated with SPSS-Windows 15.0, both global for each pair of compared incisors and for some categories. Due to the limited sample size for some categories, categories for kappa calculation were collapsed. e: NC: Kappa non calculable due to insufficient sample size