Clinical outcomes of socket preservation after tooth extraction using bovine-derived xenograft collagen and collagen membrane or deproteinized bovine bone mineral and collagen membrane compared to blood clot alone. A six-months randomized controlled clinical trial.

The aim of this study was to evaluate the clinical changes of the dimensions of alveolar sockets following application of bovine-derived xenograft collagen and collagen membrane or deproteinized bovine bone mineral and collagen membrane compared with spontaneous healing 6 months after tooth extraction. Fourty-five patients with 45 fresh alveolar sockets were randomly allocated in test group A, test group B or control group. After a 6-months follow-up period surgical re-entry was performed and implants were installed. Statistically significant differences were not recorded in terms of vertical and horizontal bone changes between test and control group, but statistically significant differences were found when sites with self-contained buccal bone changes were compared with fresh alveolar socket with all bony walls. Within the limits of this study, it can be concluded that socket preservation procedures can provide more favorable conditions for the implant placement.