Table 4.
Distribution of procedural errors according to tooth type
| Tooth Type | Root canals treated | Procedural errors |
|---|---|---|
| Anterior | 163 | 20 (12.3%) a, b |
| Premolars | 367 | 35 (9.5%) c |
| Molars | 1144 | 257 (22.5%) |
| Total | 1674 | 312 (18.6%) |
a
No significant difference (P=0.341) between root canals with procedural errors in anterior teeth and premolars;
b
Significant difference (P=0.003) between root canals with procedural errors in anterior teeth and molars;
c
Significant difference (P<0.001) between root canals with procedural errors in premolars and molars