Patient and population (P) Healthy adult patients (> 18 years) with a horizontal alveolar ridge deficiency following tooth loss or congenitally missing teeth in the maxilla and mandible not allowing placement of dental implants of the desired dimensions in the correct three-dimensional position for the later prosthetic rehabilitation.
Intervention (I) Horizontal alveolar ridge augmentation with a xenogenic block.
Comparator or control group (C) Horizontal alveolar ridge augmentation with an autogenous bone block graft.
Outcomes (O) -Implant survival rate.
-Complication rate prior to implant placement.
-Possibility of placing an implant of sufficient dimensions and in the ideal three-dimensional position for the later placement of suprastructure.
-Postoperative dimensional changes in width of the alveolar ridge.
-Need for additional contour augmentation simultaneous with implant placement.
-Complication rate after implant placement.
-Alveolar ridge dimensions at implant placement.
-Implant stability, peri-implant health, and graft handling.
-Survival of suprastructure.
-Patient-reported outcome measures.
Study design (S) Randomized controlled trials, controlled trials, prospective case-series and retrospective studies assessing horizontal alveolar ridge augmentation with a xenogenic block graft compared with an autogenous bone block graft. Moreover, human studies solely assessing horizontal alveolar ridge augmentation with a xenogenic block graft will also be included as non-comparative studies.
Focused question Are there any differences in implant survival rate following horizontal alveolar ridge augmentation with xenogenic block grafts compared with autogenous bone block grafts?