How effective are different ridge augmentation strategies at resolving horizontal alveolar ridge deficiencies prior to (staged approach), or simultaneous with dental implant placement?

Systematic review conclusion: Lateral ridge augmentation procedures are effective in treating deficient alveolar ridges prior or simultaneously to the placement of dental implants. For the simultaneous approach, the combination of bone replacement grafts and barrier membranes was associated with superior outcomes. For the staged approach, the combination of bone blocks, particulate grafts, and barrier membranes provided the best outcomes. The morbidity and postoperative complications associated with the staged approach should not be underestimated. Both treatment strategies led to high survival and success rates (>95%) for the implants placed on the regenerated sites.