Vascularized Inter-positional Periosteal Connective tissue Flap Versus Collagen Membrane in Guided Bone Regeneration in Horizontal Ridge Augmentation in Aesthetic zone (Randomized clinical trial)

Document Type : Original Article

Authors

1 MSc candidate of Oral and Maxillofacial Surgery, Faculty of Dentistry, Cairo University, Cairo, Egypt.

2 Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Cairo University, Cairo, Egypt

3 Lecturer of Oral and Maxillofacial Pathology, Faculty of Dentistry, Cairo University, Cairo, Egypt.

4 Lecturer of Oral and Maxillofacial Surgery, Faculty of Dentistry, Cairo University, Cairo, Egypt.

Abstract

Aim: This study aimed to evaluate the efficacy of the collagen membrane versus Vascularized inter-positional Periosteal connective tissue flap (VIP-CT) in Guided bone regeneration in horizontal ridge augmentation in the aesthetic zone in terms of radiographic outcome
Methodology: Twenty-four patients with horizontal bone defect were randomly allocated equally into two groups; the control group: (group I) underwent bone graft augmentation (autograft and xenograft) with collagen membrane fixed with suture or tacks, whereas the other group underwent bone graft augmentation, VIP-CT flap was performed and fixed over graft with sutures. Each patient was assessed pre operatively and 6 months post operatively radiographically using cone beam computed tomography (CBCT) to asses horizontal bone gain
Results: The post operative recovery and healing phase was uneventful in all patients except in one patient in group II, where infection was observed 3 days post operatively. The horizontal bone gain was significantly higher in the control group (1.82± 0.62) than the intervention group (1.12 ± 0.59), consequently there was a significant statistical difference (P= 0.01).
Conclusion: The vascularized inter-positional periosteal connective tissue flap has promising results in soft tissue and bone augmentation in the aesthetic zone as it offers a solution for type II sockets with thin soft tissue biotype in a single step.

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Egyptian Dental Journal
Volume 71, Issue 4 - Serial Number 2
October - Oral Surgery
October 2025
Pages 2989-2996

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