Compressive Single-piece Implants for Immediate Rehabilitation of Edentulous Maxillectomy Patients

Inclusion Criteria: * Patients with a status eligible for implants after partial or total maxillectomy or partial or total loss of the maxilla. * Residual alveolar ridge quantity and quality will be verified by cone beam computed tomography (CBCT) especially in the proposed implant sites. Exclusion Criteria: * Patients with systemic diseases that interfere with surgical implant procedures e.g., uncontrolled diabetes or osteoporosis. * Radiation therapy or chemotherapy to the head and neck area (currently or time interval less than 6-months) * Patients with local inflammation that may cause interference with implant placement.