Non Grafted Maxillary Sinus Floor Elevation With Implant Placement Versus the Use of Short Endosseous Implants

Inclusion Criteria: * Patients with partially edentulous in the posterior area of the maxilla, with a residual ridge that allowed insertion of ≤8 mm length implants. * Both sexes. * No intraoral soft and hard tissue pathology * No systemic condition that contraindicate implant placement. Exclusion Criteria: * Sinus pathology. * Heavy smokers more than 20 cigarettes per day. * Patients with systemic disease that may affect normal healing. * Psychiatric problems * Disorders to implant are related to history of radiation therapy to the head and neck neoplasia, or bone augmentation to implant site * Immunodeficiency pathology, bruxism, stress situation (socially or professionally), emotional instability, and unrealistic aesthetic demands.