In advanced case of periodontitis, surgical treatment without bone contouring may result in residual pockets inaccessible to proper cleaning during post-treatment maintenance. This problem can be avoided or reduced by applying guided tissue regeneration.

All of 3 patients had deep periodontal pocket depth and bleeding on probing, and radiograph revealed osseous defect, so we planned guided tissue regeneration using resorbable membrane with or without xenograft.

6 months later, periodontal pocket depth and bleeding on probing was improved and gingiva was stable.

Guided tissue regeneration using resorbable membrane with or without xenograft in osseous defect is predictable.