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Effect of Ascorbic Acid-Loaded I-PRF With Partially Demineralized Dentin Graft on Alveolar Ridge Preservation (AA-IPRF-PDDG)

31 de outubro de 2026 atualizado por: Mahmoud Ebrahim Ahmed Elsaadawy, Nahda University

Effect of Ascorbic Acid-Loaded Injectable Platelet-Rich Fibrin Combined With Partially Demineralized Dentin Graft on Alveolar Ridge Preservation: A Randomized Controlled Clinical Trial

The goal of this clinical trial is to find out which treatment best preserves the jawbone after tooth extraction in adults planning to receive a dental implant later.

The study will investigate whether adding vitamin C to a mixture of tooth particles and a material prepared from the participant's own blood helps preserve the jawbone and improve bone healing.

The main questions it aims to answer are

  • Does adding vitamin C help preserve the width of the jawbone after tooth extraction?
  • Does it improve new bone formation compared with the other treatments?

Researchers will compare three treatments to determine whether adding a blood-based material, with or without vitamin C, improves bone preservation.

  1. The first group will receive small particles prepared from their own extracted tooth.
  2. The second group will receive tooth particles mixed with a healing material prepared from their own blood.
  3. The third group will receive tooth particles mixed with the same blood-based material containing vitamin C.

Participants will undergo tooth extraction and receive one of these treatments. They will attend follow-up visits during the healing period.

Researchers will:

  • Examine the treated area during follow-up visits.
  • Take three-dimensional dental scans before treatment and four months later to measure changes in jawbone width and height.
  • Collect a small bone sample during dental implant placement to examine new bone formation and healing.

The study will help determine whether adding vitamin C to the blood-based material provides additional benefits for preserving the jawbone before dental implant placement.

Visão geral do estudo

Status

Ainda não está recrutando

Condições

Intervenção / Tratamento

Descrição detalhada

This study evaluates approaches to preserve the alveolar ridge following tooth extraction before delayed dental implant placement.

The study uses a partially demineralized dentin graft prepared from the participant's extracted tooth as the grafting material. It also investigates whether combining this graft with injectable platelet-rich fibrin (I-PRF), with or without added ascorbic acid (vitamin C), may influence bone healing and ridge preservation.

The rationale for using dentin is based on its potential as an autologous graft material. I-PRF provides an autologous blood-derived component. The addition of vitamin C is being investigated as a possible way to influence the healing response.

The study will assess changes in alveolar ridge dimensions and examine bone tissue collected during implant placement. Histological and histomorphometric analysis will help characterize new bone formation, residual graft material, and connective tissue within the healing site.

The findings may provide information about the role of vitamin C-enriched I-PRF when combined with autogenous dentin grafts for alveolar ridge preservation.

Tipo de estudo

Intervencional

Inscrição (Estimado)

48

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Estude backup de contato

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos a 60 anos (Adulto)

Aceita Voluntários Saudáveis

Sim

Gêneros Elegíveis para o Estudo

Tudo

Descrição

Inclusion Criteria:

  • Patients aged 18-60 years. ⁴⁷
  • ASA Type I medically healthy patients with no significant medical history. ⁴⁷
  • Non-restorable teeth indicated for extraction followed by delayed implant placement. ⁴⁸
  • Patients eligible for immediate implant placement but facing factors that prevent implant placement at the time of extraction. ⁴⁸
  • Patients requiring alveolar ridge preservation before planned dental implant placement.
  • Presence of ST IB sockets after extraction. ⁴²-⁴⁴
  • periodontally healthy adjacent teeth. ⁴⁸
  • Adequate oral hygiene plaque index ≤15% and willingness to comply with the study protocol and follow-up visits. ⁴⁷
  • Cooperative patients willing to comply with the 4-month follow-up period. ⁴⁷
  • Ability to understand and sign the informed consent form. ⁴⁷

Exclusion Criteria:

  • Uncontrolled systemic diseases affecting bone healing (e.g., uncontrolled diabetes mellitus).
  • History of radiotherapy or chemotherapy involving the head and neck region.
  • Current use of medications known to influence bone metabolism (e.g., bisphosphonates, denosumab, long-term corticosteroids).
  • Smokers or tobacco users.
  • Pregnancy or lactation.
  • Acute uncontrolled infection extraction site.
  • Patients with poor oral hygiene or untreated active periodontal disease.
  • Psychiatric patients, or those with a learning disability, or those unable to give consent
  • Patients unable or unwilling to attend follow-up visits.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

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
Comparador Ativo: Partially Demineralized Dentin Graft Alone

Participants will undergo alveolar ridge preservation following atraumatic tooth extraction using an autogenous partially demineralized dentin graft (PDDG) prepared from the extracted tooth. The graft will be placed into the extraction socket, covered with an absorbable gelatin sponge, and secured with sutures. No injectable platelet-rich fibrin (I-PRF) or ascorbic acid will be added.

Alveolar ridge preservation following atraumatic tooth extraction using an autogenous partially demineralized dentin graft (PDDG) prepared from the extracted tooth. The graft will be placed into the extraction socket, covered with an absorbable gelatin sponge, and secured with sutures. No injectable platelet-rich fibrin (I-PRF) or ascorbic acid will be added.

Experimental: Partially Demineralized Dentin Graft Combined with I-PRF

Participants will undergo alveolar ridge preservation using an autogenous partially demineralized dentin graft (PDDG) mixed with injectable platelet-rich fibrin (I-PRF) prepared from the participant's peripheral blood. The resulting mixture, referred to as Sticky Dentin, will be placed into the extraction socket, covered with an absorbable gelatin sponge, and secured with sutures.

Alveolar ridge preservation using an autogenous partially demineralized dentin graft (PDDG) mixed with injectable platelet-rich fibrin (I-PRF) prepared from the participant's peripheral blood. The resulting sticky dentin mixture will be placed into the extraction socket, covered with an absorbable gelatin sponge, and secured with sutures.

Experimental: Ascorbic Acid-Loaded I-PRF Combined with PDDG

Participants will undergo alveolar ridge preservation using an autogenous partially demineralized dentin graft (PDDG) mixed with injectable platelet-rich fibrin (I-PRF) containing ascorbic acid. The resulting mixture, referred to as AA-Sticky Dentin, will be placed into the extraction socket, covered with an absorbable gelatin sponge, and secured with sutures.

Alveolar ridge preservation using an autogenous partially demineralized dentin graft (PDDG) mixed with injectable platelet-rich fibrin (I-PRF) containing ascorbic acid. The resulting AA-Sticky Dentin mixture will be placed into the extraction socket, covered with an absorbable gelatin sponge, and secured with sutures.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Change in Radiographic Horizontal Alveolar Ridge Width
Prazo: Baseline (before alveolar ridge preservation) to 4 months postoperatively.

The change in horizontal alveolar ridge width will be assessed using cone-beam computed tomography (CBCT) scans obtained at baseline before alveolar ridge preservation and 4 months postoperatively. Measurements will be performed at the extraction site using standardized anatomical reference points and consistent measurement procedures. The change in ridge width from baseline to 4 months will be compared among the three study groups.

Baseline (before alveolar ridge preservation) to 4 months postoperatively.

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Histomorphometric Analysis of Core Bone Biopsy Specimens
Prazo: 4 months after alveolar ridge preservation, during implant osteotomy. 4 months after alveolar ridge preservation, during implant osteotomy.

Histomorphometric analysis will be performed on core bone biopsy specimens collected from the alveolar ridge preservation sites during implant osteotomy 4 months postoperatively. The analysis will assess the percentages of newly formed bone, mature bone, and residual dentin graft particles in the specimens, and the results will be compared among the three study groups.

4 months after alveolar ridge preservation, during implant osteotomy. 4 months after alveolar ridge preservation, during implant osteotomy.

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Investigadores

  • Cadeira de estudo: Mohamed Sherif EL-Mofty, Professor, Faculty of Dentistry, Nahda University Beni-Suef, Egypt.
  • Diretor de estudo: Shaimaa Hamdy Abd El-Azeem, : Department of Oral Medicine, Diagnosis and Periodontology, Faculty of Dentistry, Nahda University Beni-Suef, Egypt.

Publicações e links úteis

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Publicações Gerais

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

30 de outubro de 2026

Conclusão Primária (Estimado)

30 de março de 2027

Conclusão do estudo (Estimado)

30 de junho de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

17 de outubro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

31 de outubro de 2026

Primeira postagem (Real)

4 de novembro de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

4 de novembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

31 de outubro de 2026

Última verificação

1 de outubro de 2026

Mais Informações

Termos relacionados a este estudo

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • 00D-9-26-8

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Descrição do plano IPD

Individual participant data will not be shared with other researchers. Only aggregated study results may be disseminated through scientific publications, while participant confidentiality and data privacy will be maintained in accordance with institutional ethical requirements.

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .