Prospective Study of Bone Augmentation With Lateral Sinus Lift and Osseointegration of Dental Implants

Inclusion Criteria: * Partially edentulous jaws in the lateral segment with 2 or more nearby lost teeth in the posterior upper jaw (maxilla), where the vertical height is a minimum of 2mm * absence of marginal periodontal disease * patients in American Society of Anesthesiologists ASA group 1-2 over 18 years. Exclusion Criteria: * ASA group 3 and above * ongoing infection * bruxism or abnormal habit * poor oral hygiene * medical conditions that may compromise healing (uncontrolled diabetes etc) * treatments that interfere with healing in the jaw bone (bisphosphonate, steroid therapy) radiotherapy or chemotherapy within the last 5 years * alcohol or substance abuse * heavy smoking * pregnancy * desire not to participate