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

2026년 10월 31일 업데이트: 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.

연구 개요

상세 설명

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.

연구 유형

중재적

등록 (추정된)

48

단계

  • 해당 없음

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 연락처

연구 연락처 백업

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

18년 (성인)

건강한 자원 봉사자를 받아들입니다

예

연구 대상 성별

모두

설명

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.

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 치료
  • 할당: 무작위
  • 중재 모델: 병렬 할당
  • 마스킹: 하나의

무기와 개입

참가자 그룹 / 팔
개입 / 치료
활성 비교기: 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.

실험적: 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.

실험적: 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.

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Change in Radiographic Horizontal Alveolar Ridge Width
기간: 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.

2차 결과 측정

결과 측정
측정값 설명
기간
Histomorphometric Analysis of Core Bone Biopsy Specimens
기간: 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.

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

수사관

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

간행물 및 유용한 링크

연구에 대한 정보 입력을 담당하는 사람이 자발적으로 이러한 간행물을 제공합니다. 이것은 연구와 관련된 모든 것에 관한 것일 수 있습니다.

일반 간행물

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (추정된)

2026년 10월 30일

기본 완료 (추정된)

2027년 3월 30일

연구 완료 (추정된)

2027년 6월 30일

연구 등록 날짜

최초 제출

2026년 10월 17일

QC 기준을 충족하는 최초 제출

2026년 10월 31일

처음 게시됨 (실제)

2026년 11월 4일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2026년 11월 4일

QC 기준을 충족하는 마지막 업데이트 제출

2026년 10월 31일

마지막으로 확인됨

2026년 10월 1일

추가 정보

이 연구와 관련된 용어

개별 참가자 데이터(IPD) 계획

개별 참가자 데이터(IPD)를 공유할 계획입니까?

아니요

IPD 계획 설명

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.

약물 및 장치 정보, 연구 문서

미국 FDA 규제 의약품 연구

아니

미국 FDA 규제 기기 제품 연구

아니

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .

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