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Published on: November 24, 2014
A Randomized Comparative Study of Two Techniques to Optimize the Root Coverage Using a Porcine Collagen Matrix
Danilo Maeda Reino1, Luciana Prado Maia1, Patrícia Garani Fernandes1
1Department of Surgery, Oral and Maxillofacial Traumatology and Periodontology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
The extended flap technique (EFT) with a porcine collagen matrix (PCM) achieved significantly better root coverage than the coronally advanced flap technique (CAF) for treating gingival recession. This finding offers improved outcomes for periodontal regeneration procedures.
Area of Science:
- Periodontology
- Regenerative Dentistry
- Oral Surgery
Background:
- Gingival recession affects numerous patients, leading to aesthetic concerns and increased tooth sensitivity.
- Root coverage procedures aim to restore lost periodontal tissues and improve aesthetics.
- The porcine collagen matrix (PCM) is a biomaterial used in periodontal regeneration.
Purpose of the Study:
- To compare the efficacy of the extended flap technique (EFT) versus the coronally advanced flap technique (CAF) for root coverage.
- To evaluate the use of a porcine collagen matrix (PCM) in conjunction with these techniques.
- To assess clinical outcomes including root coverage, probing pocket depth, and clinical attachment level.
Main Methods:
- A randomized controlled clinical study involving twenty patients with bilateral gingival recessions (Miller class I or II).
- Teeth were treated with either CAF+PCM (control) or EFT+PCM (test).
- Clinical parameters including recession height, probing pocket depth, clinical attachment level, keratinized tissue height, and keratinized mucosa thickness were measured at baseline, 3, and 6 months post-surgery.
Main Results:
- At 6 months, the mean root coverage was significantly higher in the EFT+PCM group (81.89%) compared to the CAF+PCM group (62.80%) (p<0.01).
- The mean change in recession depth from baseline was statistically significant between groups, with greater reduction in the EFT group (2.84 mm) versus the control group (2.21 mm) (p=0.02).
- No significant differences were observed in keratinized tissue height, probing pocket depth, or clinical attachment level between the two techniques.
Conclusions:
- The extended flap technique (EFT) combined with a porcine collagen matrix (PCM) demonstrates superior root coverage compared to the coronally advanced flap technique (CAF) with PCM.
- Both techniques are effective in improving periodontal parameters, but EFT offers enhanced root coverage outcomes.
- EFT represents a promising surgical approach for achieving greater root coverage in the treatment of gingival recessions.
