Table 1.
Description of study population.
Table 2.
Details about the number of canals and roots observed in the medium field of view cone-beam CT acquisitions.
Fig 1.
CBCT acquisitions to illustrate the presence of additional canals.
(A) Sagittal CBCT image of a mandibular central incisor with one root and two canals. (B) Presence of an additional canal bilaterally in first maxillary premolars (white arrows). (C) Additional canal (white arrows) concomitantly on mandibular incisors, canines and first mandibular premolars, together with no variability on mandibular molars (3 canals, 2 roots).
Table 3.
Proportion of tooth groups which have at least a difference from the average dental anatomy presented in Table 2.
Table 4.
Results from logistic regression analysis (90 observations).
Fig 2.
Multiple correspondence analysis MCA.
When the tooth was absent, the number of canals was considered as a new category “s” to be included in the 102 observations analysis of the MCA.
Table 5.
Details about each group according to MCA analysis (ISO system).