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.
Visão geral do estudo
Status
Condições
Descrição detalhada
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 de estudo
Inscrição (Estimado)
Estágio
- Não aplicável
Contactos e Locais
Contato de estudo
- Nome: Edgar Daniel Vargas Quiroga, DDS, MSc
- Número de telefone: +551633153000
- E-mail: edgar.vargasquiroga@usp.br
Estude backup de contato
- Nome: Arthur Belem Novaes Jr, DDS, PhD
- E-mail: novaesjr@forp.usp.br
Locais de estudo
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São Paulo
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Ribeirão Preto, São Paulo, Brasil, 14040-904
- School of Dentistry of Ribeirão Preto, University of Sao Paulo
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Contato:
- Edgar Daniel Vargas Quiroga, DDS, MSc
- Número de telefone: +551633153000
- E-mail: edgar.vargasquiroga@usp.br
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Contato:
- Arthur Belem Novaes Jr, DDS, PhD
- E-mail: novaesjr@forp.usp.br
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Investigador principal:
- Arthur Belem Novaes Jr, DDS, PhD
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Subinvestigador:
- Edgar Daniel Vargas Quiroga, DDS, MSc
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
- Adulto
- Adulto mais velho
Aceita Voluntários Saudáveis
Descrição
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.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Tratamento
- Alocação: Randomizado
- Modelo Intervencional: Atribuição Paralela
- Mascaramento: Solteiro
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
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Experimental: 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.
Outros nomes:
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Comparador Ativo: 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.
Outros nomes:
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Gingival Recession Depth
Prazo: 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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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Gingival Recession Width
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: Baseline, 3 months, 6 months, and 12 months
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Will be assessed after standardized air stimulation using a 0 to 100 visual analog scale.
A score of 0 indicates no pain or sensitivity, and a score of 100 indicates the worst imaginable pain or sensitivity.
Higher scores indicate worse dentin hypersensitivity.
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Baseline, 3 months, 6 months, and 12 months
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Patient-Reported Esthetic Satisfaction
Prazo: Baseline, 3 months, 6 months, and 12 months
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Patient-reported esthetic satisfaction will be assessed using a 0 to 100 visual analog scale.
A score of 0 indicates complete dissatisfaction, and a score of 100 indicates complete satisfaction.
Higher scores indicate better esthetic satisfaction.
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Baseline, 3 months, 6 months, and 12 months
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Digital Volumetric Changes
Prazo: 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 Standard Tessellation Language (STL) models.
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Baseline, 3 months, 6 months, and 12 months
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Early Wound Healing
Prazo: 7 days, 14 days, and 30 days
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Early wound healing will be assessed clinically during the postoperative period based on flap margin adaptation, suture stability, edema, inflammation, erythema, fibrin accumulation, tissue necrosis, epithelialization, biomaterial or graft exposure, and overall wound healing pattern.
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7 days, 14 days, and 30 days
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Arthur Belem Novaes Jr, DDS, PhD, University of Sao Paulo
- Cadeira de estudo: Edgar Daniel Vargas Quiroga, DDS, MSc, University of Sao Paulo
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Estimado)
Conclusão Primária (Estimado)
Conclusão do estudo (Estimado)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Real)
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- CAAE 98199226.9.0000.5419 (Outro identificador: Plataforma Brasil / Brazilian CEP-CONEP System)
Plano para dados de participantes individuais (IPD)
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Descrição do plano IPD
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