The sinus lift procedure: an alternative to the maxillary subperiosteal implant

Technical advances now allow implants to be placed when pneumatization of the sinus has left insufficient bone to engage an endosseus implant. Augmenting material, such as a mixture of resorbable hydroxylapatite and demineralized freeze-dried bone, is grafted into the sinus cavity. This creates a new alveolar ridge to support endosseous implants.