Table 4 Computed tomographic findings of odontogenic sinus diseases.
|  | Group 1 (n = 66) | Group 2 (n = 31) | Group 3 (n = 57) | Group 4 (n = 41) |
|---|---|---|---|---|
Non-implant related maxillasy sinusitis | ||||
 Periapical abscess | 12 (18.2%) |  | 2 (3.5%) |  |
 Periodontitis | 35 (53.0%) |  | 52 (91.2%) |  |
 Oroantral fistula | 10 (15.2%) |  | 3 (5.3%) |  |
 Tooth extraction | 12 (18.2%) |  | 2 (3.5%) |  |
Implant related maxillary sinusitis | ||||
 Non-specific |  | 0 |  | 1 (2.4%) |
 Perimplant ucency |  | 11 (35.5%) |  | 17 (41.5%) |
 Protursion |  | 22 (71.0%) |  | 24 (58.5%) |
 Osteomyelitis |  | 6 (19.4%) |  | 8 (19.5%) |
