Jaw bone defects develop due to various causes, including tooth extractions, trauma, periodontal disease, jaw cysts and tumors, and jaw osteonecrosis induced by medications or radiotherapy. The origins of jaw bone defects can also be congenital or due to systemic diseases. Correct implant placement, i.e. implant positioning in a three-dimensional relationship with surrounding structures is necessary for functional and aesthetic treatment results, as well as to reduce the risk of complications. To fulfill the prerequisites for correct implant placement, a preoperative or intraoperative compensation of the lost bone volume and soft tissues is required. This is the case in patients whose current oral situation does not allow a proper three-dimensional implant positioning. The use of biomaterials for alveolar ridge augmentation enables regaining the lost parts of alveolar bone. Biomaterials for bone augmentation exert osteogenic, osteoinductive, and osteoconductive effects. For correct implant horizontal ridge augmentation is used when handling alveolar ridges that are insufficient in width but sufficient in height placement. Basic techniques for horizontal ridge augmentation include the following: 1. Guided bone regeneration 2. Bone block grafting 3. Ridge-split technique 4. Alveolar distraction osteogenesis. The common issue concerning all of the horizontal ridge augmentation techniques is related to the loading of the augmented area by prosthetic structures and pressure application on the wound, which may lead to the dehiscence of soft tissues, resorption of the augmented site, and the risk of infection. An important requirement for preventing complications is a primary wound closure with no tension, except for the ridge-split technique, which does not necessitate a primary wound closure. Implant placement is indicated only if primary implant stability can be attained through alveolar ridge augmentation.