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

31. oktober 2026 oppdatert av: 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.

Studieoversikt

Detaljert beskrivelse

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.

Studietype

Intervensjonell

Registrering (Antatt)

48

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studer Kontakt Backup

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 60 år (Voksen)

Tar imot friske frivillige

Ja

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

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.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Enkelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Aktiv komparator: 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.

Eksperimentell: 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.

Eksperimentell: 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.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in Radiographic Horizontal Alveolar Ridge Width
Tidsramme: 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.

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Histomorphometric Analysis of Core Bone Biopsy Specimens
Tidsramme: 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.

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Etterforskere

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

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

30. oktober 2026

Primær fullføring (Antatt)

30. mars 2027

Studiet fullført (Antatt)

30. juni 2027

Datoer for studieregistrering

Først innsendt

17. oktober 2026

Først innsendt som oppfylte QC-kriteriene

31. oktober 2026

Først lagt ut (Faktiske)

4. november 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

4. november 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

31. oktober 2026

Sist bekreftet

1. oktober 2026

Mer informasjon

Begreper knyttet til denne studien

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

IPD-planbeskrivelse

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.

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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