An RCT Comparing Xenograft and Allograft for Ridge Preservation

Buccal bony wall loss is a common sequela following tooth extraction, and guided bone regeneration (GBR) is a common treatment for the regeneration of ridge form and volume preservation allowing dental implant placement. Many bone augmentation biomaterials are employed to accomplish GBR, and both the medical/ dental community and, subsequently, patients benefit from understanding whether a given GBR biomaterial might be more efficacious. To this end, a randomized, case series comparison of allograft + x-linked collagen membrane versus xenograft + non-x-linked collagen membrane would be beneficial to both the dental community and patients. The study compares the effectiveness of demineralized freeze-dried bone allograft + x-linked collagen membrane with xenograft + non-x-linked collagen membrane for posterior region extraction socket ridge preservation.