Table 1.
Classificationa of maxillary premolars and molars roots relationship to the maxillary sinus floor according to cone beam computed tomography scans and orthopantomogram images assessment results
| 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.