The study of the maxillary sinus areas in different orthodontic malocclusions.

In the present study, the maxillary sinus areas have been investigated on orthopantomographs of 103 male and 86 female subjects either with ideal occlusions or with malocclusions. It has been found that malocclusions and sex factors have no effect on the size of the maxillary sinuses, and that sex is a significant factor only in Angle Class II malocclusions. The female subjects with Angle Class II malocclusions have larger maxillary sinuses than the male subjects and the other groups of female subjects.