Post-operative histogenesis in the allogeneic dura mater placement area in a laboratory rat experiment: laboratory and histomorphological research

Relevance . Gum recession is a pathology often encountered both in Russia and worldwide. Modern surgical methods allow for the complete elimination of signs when adequately choosing strategy, tactics, methodology treatment protocol; complication prevention stable long-term outcome. Autograft allogeneic dura mater as grafting material creating/increasing volume attached gingiva have comparable results all clinical indications. The reason result stability absence relapse poorly studied; data are scarce do not give full understanding. In scientific literature, we did encounter histological tissue composition analysis graft placement area. coverage, partially placed subperiosteally (in tooth root area) thickness soft tissues gum. Purpose. study aimed to determine area, compare with control group without graft, assess follow-up changes surrounding reaction cellular-level surgery. Material A laboratory histomorphological examination involved 60 rats. All underwent surgery adequate gum technique: had no mater. samples were collected on 3rd, 7th, 14th, 28th, 90th 107th days after Results cases, complex regenerated, operation was same. plastic replacement at same period. Bone replaced connective intragingivally. Gingival biotype thickening considerably due trauma, less – from material. Allogeneic stimulated earlier ossification. Conclusion use coverage justified if subperiosteally, forming full-thickness mucoperiosteal flap surgically (with scalpel) preserve cambium periosteum flap. buccal cortical plate reconstruction/ regeneration support newly formed ligament prevent recurrent formation. formation bone area determines gingival favourable prognosis complications relapse.