Evaluation of deproteinised bovine bone matrix combined with absorbable biofilm for the preservation of extraction sites of mandibular impacted wisdom teeth.

This article evaluates the effect of socket preservation using the bone substitute Bio-Oss (deproteinised bovine bone mineral) and the bioabsorbable collagen membrane Bio-Gide on alveolar bone resorption and periodontal health distal to the mandibular second molar after extraction of impacted third molars. In a randomized study of 99 patients, those receiving guided bone regeneration with Bio-Oss and Bio-Gide showed significantly greater alveolar bone width and height at six months post-extraction compared to natural healing, particularly in patients under 25 years old. The treatment also improved probing depth on the distal buccal aspect of the adjacent second molar, indicating better periodontal status, although no significant differences were found in gingival bleeding or tooth mobility. The study concludes that site preservation with these materials promotes more effective recovery of alveolar bone and periodontal health than natural healing, while noting that age and other factors influence outcomes and that further research is needed to address soft tissue changes and optimize implant readiness.