Volume-Stable Collagen Matrix Versus Subepithelial Connective Tissue Graft for Multiple Gingival Recessions (VCMX-SCTG)
Volume-Stable Xenogeneic Collagen Matrix Versus Subepithelial Connective Tissue Graft for the Treatment of Multiple Gingival Recessions: A 12-Month Randomized Controlled Clinical Trial
Gingival recession is a clinical condition in which the gingival margin is displaced apically, exposing the root surface. This condition may be associated with esthetic concerns, dentin hypersensitivity, and difficulties in oral hygiene. Subepithelial connective tissue grafting is considered a standard surgical approach for root coverage, but it requires harvesting tissue from the palate, which may increase postoperative discomfort. Volume-stable xenogeneic collagen matrices have been proposed as an alternative biomaterial to reduce the need for a palatal donor site.
This randomized controlled clinical trial will compare a volume-stable xenogeneic collagen matrix with an autogenous subepithelial connective tissue graft for the treatment of multiple gingival recessions. Participants will be allocated to one of two treatment groups. The test group will receive root coverage surgery using a volume-stable collagen matrix, while the control group will receive root coverage surgery using a subepithelial connective tissue graft. Clinical, patient-reported, esthetic, and digital outcomes will be assessed at baseline and during follow-up visits up to 12 months.
The primary outcome will be the change in gingival recession depth from baseline to 12 months. Secondary outcomes will include keratinized tissue width, gingival thickness, percentage of root coverage, complete root coverage, dentin hypersensitivity, patient-reported satisfaction, early wound healing, and digital volumetric changes assessed by intraoral scanning.
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
This study is a randomized controlled clinical trial designed to evaluate the clinical performance of a volume-stable xenogeneic collagen matrix compared with an autogenous subepithelial connective tissue graft in the treatment of multiple gingival recessions.
Eligible participants presenting multiple gingival recessions will be recruited and allocated to one of two parallel treatment groups. In the test group, participants will receive root coverage surgery using a volume-stable xenogeneic collagen matrix associated with a coronally advanced flap. In the control group, participants will receive root coverage surgery using an autogenous subepithelial connective tissue graft associated with a coronally advanced flap.
Clinical assessments will include gingival recession depth, keratinized tissue width, probing depth, clinical attachment level, gingival thickness, percentage of root coverage, and complete root coverage. Patient-reported outcomes will include dentin hypersensitivity, postoperative comfort, esthetic satisfaction, and acceptance of the procedure. Standardized clinical photographs and intraoral scans will be obtained during follow-up. Digital analyses will be used to assess changes in soft tissue volume over time.
The primary endpoint will be the change in gingival recession depth from baseline to 12 months. Secondary endpoints will include clinical, esthetic, patient-reported, wound healing, and digital volumetric outcomes assessed at predefined follow-up visits.
Tipo di studio
Iscrizione (Stimato)
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
- Nome: Edgar Daniel Vargas Quiroga, DDS, MSc
- Numero di telefono: +551633153000
- Email: edgar.vargasquiroga@usp.br
Backup dei contatti dello studio
- Nome: Arthur Belem Novaes Jr, DDS, PhD
- Email: novaesjr@forp.usp.br
Luoghi di studio
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São Paulo
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Ribeirão Preto, São Paulo, Brasile, 14040-904
- School of Dentistry of Ribeirão Preto, University of Sao Paulo
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Contatto:
- Edgar Daniel Vargas Quiroga, DDS, MSc
- Numero di telefono: +551633153000
- Email: edgar.vargasquiroga@usp.br
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Contatto:
- Arthur Belem Novaes Jr, DDS, PhD
- Email: novaesjr@forp.usp.br
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Investigatore principale:
- Arthur Belem Novaes Jr, DDS, PhD
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Sub-investigatore:
- Edgar Daniel Vargas Quiroga, DDS, MSc
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
- Adulto
- Adulto più anziano
Accetta volontari sani
Descrizione
Inclusion Criteria:
- Adults aged 18 years or older.
- Presence of at least two Cairo RT1 gingival recessions in anterior teeth and/or premolars.
- Gingival recession depth greater than or equal to 2 mm.
- Presence of at least 2 mm of keratinized gingiva apical to the gingival recession.
- Indication for root coverage treatment due to esthetic concern and/or dentin hypersensitivity.
- Sites with non-carious cervical lesions may be included if they are previously restored and, after restoration, present residual gingival recession greater than or equal to 2 mm.
- Good plaque control, defined as full-mouth plaque score and full-mouth marginal gingival bleeding score below 20%.
Exclusion Criteria:
- Current smokers or individuals who stopped smoking less than 12 months before enrollment.
- Decompensated systemic diseases.
- Pregnancy or lactation.
- Active periodontal disease.
- Untreated root caries.
- Previous mucogingival surgery in the study area.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Separare
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
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Sperimentale: Volume-Stable Collagen Matrix
Participants in this group will receive root coverage surgery using a volume-stable xenogeneic collagen matrix associated with a coronally advanced flap.
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A volume-stable xenogeneic collagen matrix will be used as a soft-tissue substitute for root coverage surgery.
The matrix will be placed over the recession defects and covered by a coronally advanced flap.
Altri nomi:
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Comparatore attivo: Subepithelial Connective Tissue Graft
Participants in this group will receive root coverage surgery using an autogenous subepithelial connective tissue graft associated with a coronally advanced flap.
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An autogenous subepithelial connective tissue graft will be harvested from the palate and used for root coverage surgery.
The graft will be placed over the recession defects and covered by a coronally advanced flap.
Altri nomi:
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Gingival Recession Depth
Lasso di tempo: Baseline, 3 months, 6 months, and 12 months
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Gingival recession depth will be measured clinically in millimeters as the distance from the cementoenamel junction to the gingival margin.
The main comparison between groups will be performed at 12 months.
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Baseline, 3 months, 6 months, and 12 months
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Gingival Recession Width
Lasso di tempo: Baseline, 3 months, 6 months, and 12 months
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Gingival recession width will be measured horizontally in millimeters at the level of the cementoenamel junction.
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Baseline, 3 months, 6 months, and 12 months
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Keratinized Tissue Width
Lasso di tempo: Baseline, 3 months, 6 months, and 12 months
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Keratinized tissue width will be measured in millimeters from the gingival margin to the mucogingival junction.
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Baseline, 3 months, 6 months, and 12 months
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Gingival Thickness
Lasso di tempo: Baseline, 3 months, 6 months, and 12 months
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Gingival thickness will be measured in millimeters at the treated sites using a standardized clinical method.
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Baseline, 3 months, 6 months, and 12 months
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Probing Depth
Lasso di tempo: Baseline, 3 months, 6 months, and 12 months
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Probing depth will be measured in millimeters from the gingival margin to the bottom of the sulcus or pocket at the treated sites.
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Baseline, 3 months, 6 months, and 12 months
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Clinical Attachment Level
Lasso di tempo: Baseline, 3 months, 6 months, and 12 months
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Clinical attachment level will be calculated in millimeters as probing depth plus gingival recession depth.
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Baseline, 3 months, 6 months, and 12 months
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Percentage of Root Coverage
Lasso di tempo: 3 months, 6 months, and 12 months
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Percentage of root coverage will be calculated based on the reduction in gingival recession depth from baseline to 12 months.
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3 months, 6 months, and 12 months
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Complete Root Coverage
Lasso di tempo: 3 months, 6 months, and 12 months
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Complete root coverage will be defined as the absence of residual gingival recession at the treated site.
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3 months, 6 months, and 12 months
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Dentin Hypersensitivity
Lasso di tempo: Baseline, 3 months, 6 months, and 12 months
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Dentin hypersensitivity will be assessed using a visual analog scale after standardized air stimulation of the treated teeth.
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Baseline, 3 months, 6 months, and 12 months
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Patient-Reported Esthetic Satisfaction
Lasso di tempo: Baseline, 3 months, 6 months, and 12 months
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Patient-reported esthetic satisfaction with the treatment outcome will be assessed using a visual analog scale.
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Baseline, 3 months, 6 months, and 12 months
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Digital Volumetric Changes
Lasso di tempo: Baseline, 3 months, 6 months, and 12 months
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Soft tissue volumetric changes will be assessed using intraoral scans and digital superimposition of three-dimensional STL models.
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Baseline, 3 months, 6 months, and 12 months
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Early Wound Healing
Lasso di tempo: 7 days, 14 days, and 30 days
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Early wound healing will be assessed clinically during the postoperative period using a standardized wound healing index.
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7 days, 14 days, and 30 days
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Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Arthur Belem Novaes Jr, DDS, PhD, University of Sao Paulo
- Cattedra di studio: Edgar Daniel Vargas Quiroga, DDS, MSc, University of Sao Paulo
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Altri numeri di identificazione dello studio
- CAAE 98199226.9.0000.5419 (Altro identificatore: Plataforma Brasil / Brazilian CEP-CONEP System)
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