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Eggshell-Derived Hydroxyapatite With Platelet-Rich Fibrin for Bone Regeneration After Jaw Cyst Removal

5 novembre 2026 mis à jour par: Ahmed Nasser Ali Mabkhout

Evaluation of Eggshell-Derived Hydroxyapatite Enhanced With Platelet-Rich Fibrin for Alveolar Bone Regeneration Following Cyst Enucleation

This clinical study aims to evaluate bone healing after the surgical removal of jaw cysts using a bone graft material made from chicken eggshells, with or without platelet-rich fibrin (PRF), a substance prepared from the patient's own blood.

Removal of a jaw cyst can leave an empty space in the surrounding bone. Although this space may heal naturally, bone regeneration can take several months. Hydroxyapatite is a bone-like mineral that may support new bone formation. Combining it with PRF may further improve healing.

This prospective, controlled clinical study is being conducted in Sana'a, Yemen. Participants undergo surgical removal of jaw cysts and receive one of the treatment approaches included in the study. The researchers compare bone healing between treatment groups using clinical examinations and dental imaging, including cone-beam computed tomography (CBCT).

Participants are followed for up to six months after surgery. The study evaluates bone regeneration, postoperative pain, wound healing, and possible complications.

The researchers aim to determine whether eggshell-derived hydroxyapatite combined with PRF improves bone regeneration compared with the other treatments being investigated.

Aperçu de l'étude

Statut

Recrutement

Les conditions

Intervention / Traitement

Description détaillée

This prospective, controlled, non-randomized interventional clinical study evaluates the clinical and radiographic outcomes of eggshell-derived hydroxyapatite (HA) enhanced with autologous platelet-rich fibrin (PRF) for alveolar bone regeneration following the enucleation of odontogenic jaw cysts.

The study is conducted in Sana'a, Yemen, among adult patients requiring surgical enucleation of jaw cysts associated with residual bone defects.

The investigational bone graft material is synthesized from processed chicken eggshells using a chemical preparation method involving phosphoric acid. The resulting calcium phosphate material undergoes physicochemical characterization and is prepared for clinical application under controlled aseptic conditions.

The clinical study includes three treatment groups. Participants are assigned using a repeating A-B-C allocation sequence rather than random assignment. The study evaluates eggshell-derived HA combined with autologous PRF against the other treatment approaches defined in the clinical protocol.

When PRF is used, venous blood is collected from the participant and centrifuged without anticoagulants to obtain a fibrin-rich preparation. The PRF is combined with the prepared HA material and applied to the residual bone defect after cyst enucleation.

Participants undergo standardized surgical management and postoperative clinical assessment. Clinical evaluations include wound healing, postoperative pain, swelling, infection, wound dehiscence, and other treatment-related complications.

Radiographic assessments include panoramic radiography and cone-beam computed tomography (CBCT). Bone regeneration is evaluated through changes in residual defect dimensions and radiographic healing during postoperative follow-up, including assessments at three and six months.

The primary objective is to compare radiographic bone regeneration following cyst enucleation among the treatment groups. Secondary objectives include evaluating soft tissue healing, postoperative discomfort, and treatment-related complications.

The study hypothesis is that eggshell-derived HA combined with autologous PRF may provide improved bone regeneration compared with the other treatment approaches. The investigation is intended to generate clinical evidence regarding the regenerative performance and safety of the locally prepared bone graft material.

Type d'étude

Interventionnel

Inscription (Estimé)

30

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

      • Sanaa, Yémen
        • Recrutement
        • Faculty of Dentistry, Sana'a University
        • Contact:

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans à 60 ans (Adulte)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

**Inclusion Criteria:**

  • Adult patients aged 18 to 60 years.
  • Patients diagnosed with odontogenic jaw cysts requiring surgical enucleation.
  • Patients with residual jawbone defects measuring at least 1.5 cm following cyst enucleation.
  • Patients in good general health or with medically controlled systemic conditions.
  • Patients who provide informed consent to participate in the clinical study and agree to scheduled postoperative follow-up examinations.

**Exclusion Criteria:**

  • Patients with an active infection at the surgical site.
  • Patients with a history of radiation therapy or bisphosphonate use.
  • Patients with systemic bone diseases or immunosuppression.
  • Pregnant or lactating women.
  • Patients with known allergies or intolerance to any materials used in the study.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: Non randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Group A: Eggshell-Derived HA + PRF

Following surgical enucleation of the odontogenic jaw cyst, the residual bone defect is filled with locally prepared eggshell-derived hydroxyapatite combined with autologous platelet-rich fibrin (PRF). The PRF is obtained from the patient's venous blood by centrifugation without anticoagulants. The combined graft is placed into the bone cavity before surgical wound closure.

Comparateur actif: Group B: Eggshell-Derived HA Alone

Following surgical enucleation of the odontogenic jaw cyst, the residual bone defect is filled with eggshell-derived hydroxyapatite without platelet-rich fibrin. The graft is placed directly into the bone cavity before surgical wound closure.

Aucune intervention: Group C: Spontaneous Bone Healing

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Change in Alveolar Bone Defect Dimensions Following Cyst Enucleation
Délai: Baseline and 3 and 6 months after surgery

Radiographic bone regeneration is assessed by measuring changes in the vertical and horizontal dimensions of the residual bone defect in millimeters using cone-beam computed tomography (CBCT). Measurements obtained at baseline are compared with those at 3 and 6 months after surgery to evaluate bone defect reduction among the treatment groups.

Baseline and 3 and 6 months after surgery
Change in Radiographic Density Within the Healing Bone Defect
Délai: Baseline and 3 and 6 months after surgery

Changes in radiographic density within the bone defect are evaluated using CBCT image gray values obtained from a defined region of interest. Measurements are compared between baseline and follow-up examinations at 3 and 6 months, using a consistent imaging and measurement protocol. Gray values are reported as relative radiographic measurements rather than calibrated Hounsfield units.

Baseline and 3 and 6 months after surgery

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Postoperative Pain Intensity
Délai: 1 week, 1 month, 3 months, and 6 months after surgery

Postoperative pain is assessed using a patient-reported visual analog scale (VAS) ranging from 0 (no pain) to 10 (worst imaginable pain). Pain scores are recorded during postoperative follow-up visits and compared among the treatment groups.

1 week, 1 month, 3 months, and 6 months after surgery
Clinical Soft Tissue Healing
Délai: 1 week, 1 month, 3 months, and 6 months after surgery

Healing of the surgical site is assessed clinically by examining mucosal wound closure and recording the presence or absence of swelling and wound dehiscence during postoperative follow-up visits.

1 week, 1 month, 3 months, and 6 months after surgery
Incidence of Postoperative Complications
Délai: From surgery through 6 months of postoperative follow-up

The number of participants experiencing postoperative complications, including surgical-site infection, wound dehiscence, or other documented procedure-related complications, is recorded and compared among the treatment groups.

From surgery through 6 months of postoperative follow-up

Collaborateurs et enquêteurs

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Parrainer

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

14 septembre 2026

Achèvement primaire (Estimé)

30 décembre 2027

Achèvement de l'étude (Estimé)

30 décembre 2027

Dates d'inscription aux études

Première soumission

5 novembre 2026

Première soumission répondant aux critères de contrôle qualité

5 novembre 2026

Première publication (Réel)

12 novembre 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

12 novembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

5 novembre 2026

Dernière vérification

1 novembre 2026

Plus d'information

Termes liés à cette étude

Autres numéros d'identification d'étude

  • 08/09/2O25:OMFS

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

NON

Description du régime IPD

Individual participant data (IPD) will not be shared with external researchers. Participant-level clinical and radiographic data will be kept confidential in accordance with the approved study protocol, institutional ethical requirements, and applicable data protection regulations. Aggregated and anonymized study results may be reported in scientific publications.

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .