Maxillary Sinus Lift Maxilla is 35 times more edentulous than mandible. Occlusal forces are 3 times greater in posterior.
Maxillary sinus continues pneumatization throughout life.
Treating edentulism in the posterior maxilla is a challenging clinical entity. Acceptable contour of the alveolus. Maxillary Sinus Anatomy aka antrum of Highmore. But the sinus continues pneumatization for life. There is encroachment on the alveolar process, which is more noticeable in partially or fully edentulous maxilla.