- Oro-antral communication mainly due to an extraction of closely related upper posterior teeth.
- Main radiographic features: Break in the continuity of the floor- characteristic features of acute or chronic sinusitis in the antrum.
- Fractures of the maxillo-facial skeleton
- Main radiographic features: Break in the continuity of one or more of the antral walls depending on the type of fracture- Opacity or fluid level within the antral cavity-
- The orbital blow-out fracture classically produces a tear-drop-shaped opacity in the upper part of the antrum.
Trauma sinus
