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Published on: December 5, 2025
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A modified surgical flap for root coverage in association with grafting materials
Raquel R M Barros1, Guilherme O Macedo, Adriana Corrêa de Queiroz
1Department of Bucco-Maxillo-Facial Surgery and Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café - s/n, Ribeirão Preto, SP, 14040-904, Brazil.
Summary
This study shows an extended flap technique effectively improves root coverage for gingival recession using connective tissue grafts or acellular dermal matrix. Both methods yielded significant results after 12 months.
Area of Science:
- Periodontology
- Regenerative Dentistry
- Oral Surgery
Background:
- Gingival recession affects numerous individuals, leading to aesthetic concerns and potential tooth sensitivity.
- Root coverage procedures aim to restore lost gingival tissue and improve periodontal health.
- Autografts (connective tissue graft) and allografts (acellular dermal matrix) are common materials for root coverage.
Purpose of the Study:
- To clinically evaluate the effectiveness of a modified extended flap technique for root coverage.
- To compare the outcomes of using connective tissue graft versus acellular dermal matrix with this technique.
- To assess clinical parameters including probing depth, clinical attachment level, gingival recession, and keratinized tissue width over 12 months.
Main Methods:
- A randomized controlled trial involving 30 bilateral gingival recessions.
- Treatment with a modified extended flap, with releasing incisions placed on mesial and distal line angles.
- One site received an autograft (connective tissue graft), the contralateral site received an allograft (acellular dermal matrix).
Main Results:
- Both surgical techniques significantly improved clinical parameters, including reduction in gingival recession.
- Autograft group showed mean recession reduction from 3.15 mm to 0.67 mm.
- Allograft group showed mean recession reduction from 3.47 mm to 0.93 mm.
- No statistically significant differences were observed between the autograft and allograft groups.
Conclusions:
- The extended flap technique enhances root coverage outcomes when used with subepithelial connective tissue grafts or acellular dermal matrix.
- Graft survival is crucial for successful mucogingival therapy.
- The extended flap technique is a viable and recommended option for treating localized gingival recessions.
