A 5-year clinical observation on the application of non-resorbable membranes for bone augmentation in the aesthetic zone

doi:10.12337/zgkqzzxzz.2024.10.009

Abstract

Abstract: This case report describes the use of guided bone regeneration (GBR) combined with soft tissue augmentation for implant restoration in an extended edentulous space in the esthetic zone, employing heterogeneous bone and dense polytetrafluoroethylene (dPTFE) membranes with double-layered coverage using a pig-derived non-crosslinked collagen membrane (Bio-Gide). The patient presented with multiple teeth missing in the maxillary anterior region due to trauma sustained at a young age, accompanied by severe horizontal bone loss and slight vertical bone loss. Clinical treatment involved the simultaneous guided placement of implants with GBR using deproteinized bovine bone mineral (DBBM), dPTFE, and Bio-Gide membranes. After 6 months, soft tissue augmentation was performed in two stages: first using the tunneling technique with allogeneic de-epithelialized dermal matrix (AlloDerm), followed by a modified tunneling technique using a connective tissue graft (CTG). Gingival shaping was achieved with temporary restorations, followed by final aesthetic restoration to restore function and appearance. A 5-year clinical follow-up demonstrated that GBR with DBBM, dPTFE, and Bio-Gide achieved ideal bone volume gain, while AlloDerm/CTG with the tunneling technique produced satisfactory soft tissue augmentation, contributing to excellent aesthetic outcomes.

Key words: Implant in the esthetic zone, Guided bone regeneration (GBR), Polytetrafluoroethylene membrane, Soft tissue augmentation

Wan Peng. A 5-year clinical observation on the application of non-resorbable membranes for bone augmentation in the aesthetic zone[J]. Chinese Journal of Oral Implantology, 2024, 29(5): 445-452.

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