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Khoury's Bone Shell Technique Versus Titanium-Reinforced Polytetrafluoroethylene for Augmentation of Horizontal Deficiency in Posterior Mandible (Histomorphometry Analysis)

15 juli 2026 bijgewerkt door: Abdelaziz, British University In Egypt

Khoury's Bone Shell Technique Versus Titanium-Reinforced Polytetrafluoroethylene for Augmentation of Horizontal Deficiency in Posterior Mandible (Histomorphometry Analysis): A Randomized Clinical Trial

The purpose of the study is the comparison of bone gained histologically from the Bone Shell Khoury's Technique in comparison with the usage of non-resorbable membrane polytetrafluoroethylene and discussing its eligibility for implant placement in restoring the atrophic posterior mandible.

Studie Overzicht

Toestand

Werving

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

The aim of this study is to assess the bone gained histologically when comparing the following different techniques:

One of the techniques that is used for bone augmentation is the Khoury technique which entails that a split cortical bone shell obtained from the ramus area through piezoelectric surgery. The thin laminae of bone obtained is stabilized in the defect area labially through micro screws and the generated gap is filled through a mixture of autogenous that could be obtained from the retromolar area through special burs as the auto chip maker (ACM) or via bone scrapper. The obtained is mixed with an equal ratio with xenograft or bone obtained from animal source to fill the created gap.

Another technique involves the usage of a non-resorbable membrane known as reinforced titanium PTFE that is stabilized from both the lingual and labial aspects via micro screws .It's then filled with a mixture of both autogenous and xenograft for maximizing the bone formation capability. In some cases, the reinforced titanium PTFE is covered with collagen membrane to avoid one of the common drawbacks of this technique which is wound dehiscence.

This study aims to evaluate the bone quality gained from both techniques.

Studietype

Ingrijpend

Inschrijving (Geschat)

Fase

Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Naam: Abdelaziz H. Saad Abdelkarim, Bachelor's Degree
Telefoonnummer: +201020690459
E-mail: PG.Abdelaziz92344012@bue.edu.eg

Studie Locaties

Egypte
- - Cairo, Egypte
    - Werving
    - The British university in Egypt
    - Contact:
      
      Oral and Maxillofacial Lecturer
      
      Telefoonnummer: +201005609359
      
      E-mail: Moataz.Bahaa@bue.edu.eg

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

Volwassen
Oudere volwassene

Accepteert gezonde vrijwilligers

Beschrijving

Inclusion Criteria:

Have two or more missing teeth in the posterior mandibular segment.
The patients age of 18 and above.
The alveolar ridge in the edentulous site of the selected patients will have a buccolingual width of less than 4mm.
Sufficient vertical bone height.
Free of any local or systemic condition that may contraindicate ridge expansion procedure.

Exclusion Criteria:

Patients taking any medication that may interfere with bone healing or bone biology.
Patients with any systemic disease that may affect bone healing.
Any patients with any previous bone grafting procedure at the site of interest.
Smokers.
Patient's that have been diagnosed with periodontal disease, as sufficient ridge height would be improbable.
Patients with significant vitamin D deficiency.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

Primair doel: Behandeling
Toewijzing: Gerandomiseerd
Interventioneel model: Parallelle opdracht
Masker: Dubbele

Aantal wapens

Wapens en interventies

Deelnemersgroep / Arm	Interventie / Behandeling
Experimenteel: GBR using Ti based PTFE This group will receive a non resorbable membrane using titanium reinforced polytetrafluorethylene membrane.	Procedure: GBR using Ti based PTFE Patients will receive a non resorbable membrane using titanium reinforced polytetrafluorethylene membrane with full releasing flap buccal and lingual with the lingual dissection for the releasing of the mylohyoid attachment and nerve dissection of the mental nerve buccally. The membrane needs to be fixed lingually with microscrews or titanium screws then the gap will be filled through Auto Chip Maker ACM or bone scraper from the external oblique ridge. Then the harvested bone shall be mixed xenograft with ratio 70 to 30 then the membrane fixed buccally as well as covered by collagen membrane to avoid one of the main obstacles of the procedure which is wound dehiscence.
Actieve vergelijker: Bone Shell Khoury's Technique This group will receive a block graft using Khoury Technique.	Procedure: Bone Shell Khoury's Technique A block graft using Khoury Technique: Prior to harvesting the needed bone, measurement of the defect size as well as measurement of the donor site bone block will be harvested from the mandibular retromolar area. The bone shall be acquired through piezoelectric device that perform the osteotomy then separated through the usage of thin chisel. The acquired bone needs to be smoothened to avoid any sharp edge that may cause wound dehiscence or infection. The harvested bone will be divided into two thinner bone shells through using titanium disk with copious irrigation with saline. The bone shell shall be fixated in the defect site buccally through two microscrews at least then the created space shall be filled with a combination of autogenous bones harvested through Auto Chip Maker (ACM) or bone scraper from the external oblique ridge. The harvested bone will be combined with xenograft with ratio 70 to 30 then the defect shall be covered with collagen membrane.

Deelnemersgroep / Arm

Interventie / Behandeling

Experimenteel: GBR using Ti based PTFE

This group will receive a non resorbable membrane using titanium reinforced polytetrafluorethylene membrane.

Procedure: GBR using Ti based PTFE

Patients will receive a non resorbable membrane using titanium reinforced polytetrafluorethylene membrane with full releasing flap buccal and lingual with the lingual dissection for the releasing of the mylohyoid attachment and nerve dissection of the mental nerve buccally. The membrane needs to be fixed lingually with microscrews or titanium screws then the gap will be filled through Auto Chip Maker ACM or bone scraper from the external oblique ridge. Then the harvested bone shall be mixed xenograft with ratio 70 to 30 then the membrane fixed buccally as well as covered by collagen membrane to avoid one of the main obstacles of the procedure which is wound dehiscence.

Actieve vergelijker: Bone Shell Khoury's Technique

This group will receive a block graft using Khoury Technique.

Procedure: Bone Shell Khoury's Technique

A block graft using Khoury Technique: Prior to harvesting the needed bone, measurement of the defect size as well as measurement of the donor site bone block will be harvested from the mandibular retromolar area. The bone shall be acquired through piezoelectric device that perform the osteotomy then separated through the usage of thin chisel. The acquired bone needs to be smoothened to avoid any sharp edge that may cause wound dehiscence or infection. The harvested bone will be divided into two thinner bone shells through using titanium disk with copious irrigation with saline. The bone shell shall be fixated in the defect site buccally through two microscrews at least then the created space shall be filled with a combination of autogenous bones harvested through Auto Chip Maker (ACM) or bone scraper from the external oblique ridge. The harvested bone will be combined with xenograft with ratio 70 to 30 then the defect shall be covered with collagen membrane.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat	Maatregel Beschrijving	Tijdsspanne
Histomorphometric analysis of gained bone Tijdsspanne: 6 Months	Primary evaluation is achieved through re opening of the flap after 6 months for removing the microscrews used in Khoury group and the nonresorbable membrane as well as the screws will be removed from the nonresorbable membrane group. Then the usage of 2 millimeters bur for core biopsy at the site of the implant that will be placed.	6 Months

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

British University In Egypt

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

20 juni 2025

Primaire voltooiing (Geschat)

1 oktober 2026

Studie voltooiing (Geschat)

1 maart 2027

Studieregistratiedata

Eerst ingediend

21 juni 2026

Eerst ingediend dat voldeed aan de QC-criteria

21 juni 2026

Eerst geplaatst (Werkelijk)

25 juni 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

16 juli 2026

Laatste update ingediend die voldeed aan QC-criteria

15 juli 2026

Laatst geverifieerd

1 juli 2026

Meer informatie

Termen gerelateerd aan deze studie

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

25-018

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

ONBESLIST

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

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Khoury's Bone Shell Technique Versus Titanium-Reinforced Polytetrafluoroethylene for Augmentation of Horizontal Deficiency in Posterior Mandible (Histomorphometry Analysis)