Maxillary
teeth
N Cone beam computed
tomography (n [%])
Orthopantomography
(n [%])
True
positive
True
negative
False
positive
False
negative
Sensitivity Specificity Kappa
coefficient
Class 1 Class 2 Class 3 Class 1 Class 2 Class 3
First
premolar
148 0 1 (0.7) 147 (99.3) 32 (21.6) 24 (16.2) 92 (62.2) 0 62.2 21.8 0 0 74 0.01
Second
premolar
146 2 (1.4) 6 (4.1) 138 (94.5) 40 (27.4) 21 (14.4) 85 (58.2) 100 60 24.6 0 100 70 0.05
First
molar
144 34 (23.6) 17 (11.8) 93 (64.6) 51 (35.4) 25 (17.4) 68 (47.2) 41.2 47.3 30.1 52.9 45 61 0.01
Second
molar
145 26 (17.9) 25 (17.2) 94 (64.8) 51 (35.2) 29 (20) 65 (44.8) 57.7 50 33 26.9 68 60 0.16
Third
molar
45 6 (13.3) 1 (2.2) 38 (84.4) 13 (28.9) 9 (20) 23 (51.1) 50 51.1 26.3 50 50 66 0.11
Total
(n [%])
628 (100) 68 (10.8) 50 (8) 510 (81.2) 187 (29.8) 108 (17.2) 333 (53) 0.1

aClass 1 = at least one root tip is in the sinus; Class 2 = at least one root tip is against the sinus wall; Class 3 = all roots tips are not in the sinus.