Table 2.
Absolute and relative frequencies (%) of teeth with assertive detection of the lingual canal in mandibular premolars, with conservative and traditional endodontic access cavities, according to stage of diagnosis.
| Stage | Access cavity | Binomial test | |
|---|---|---|---|
| CAC | TAC | ||
| 1 Without magnification | 3 (25,0%) | 4 (33,3%) | p = 0,653 |
| 2 Operating microscope | (3) + 2 (41,7%) | (4) + 2 (50,0%) | p = 0,682 |
| 3 Operating microscope/ultrasonic tips | (5) + 6 (91,7%) | (6) + 2 (66,7%) | p = 0,132 |
| Cohran’s Q test | p = 0,002 | p = 0,049 | – |
* = p-values > 0.05 by binomial test. CAC = conservative endodontic access cavity; TAC = traditional endodontic access cavity. Numbers between ( ) represent canals already located in the previous step and numbers + represent canals located in the step in question.