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Carrot Technique Versus Guided Bone Regeneration for Horizontal Ridge Deficiency in the Maxillary Esthetic Zone

25. juni 2026 oppdatert av: Sarah Elmaghraby, Mansoura University

Evaluation of the Carrot Technique With Simultaneous Implant Placement for Horizontal Alveolar Ridge Deficiency in the Maxillary Aesthetic Zone: A Randomized Controlled Clinical Trial.

This randomized controlled clinical trial aims to compare the effectiveness of the Carrot Technique and Guided Bone Regeneration (GBR) for the management of horizontal alveolar ridge deficiency in patients requiring implant placement in the maxillary esthetic zone. Twenty patients will be randomly allocated into two equal groups. Clinical outcomes including implant stability and soft tissue healing, as well as radiographic outcomes including alveolar ridge width, bone density, and marginal bone loss, will be evaluated using clinical examinations and cone beam computed tomography (CBCT) during a 12-month follow-up period..

Studieoversikt

Status

Aktiv, ikke rekrutterende

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

The Carrot Technique is a minimally invasive approach that utilizes an autogenous bone core harvested during implant osteotomy and repositioned to augment the deficient buccal ridge. This technique may reduce donor-site morbidity while providing sufficient horizontal bone augmentation. Guided Bone Regeneration remains one of the most widely used techniques for horizontal ridge reconstruction through the use of bone substitute materials and barrier membranes.

This randomized controlled clinical trial will compare the clinical and radiographic outcomes of the Carrot Technique and GBR in patients presenting with horizontal ridge deficiency in the maxillary esthetic zone. Twenty patients requiring single-tooth implant rehabilitation will be randomly allocated into two equal groups. Group I will receive implant placement combined with the Carrot Technique, while Group II will receive implant placement combined with Guided Bone Regeneration.

Clinical evaluations will include implant stability assessed by resonance frequency analysis, soft tissue healing using the Landry Healing Index, and peri-implant inflammation using the modified sulcus bleeding index. Radiographic evaluation will be performed using cone beam computed tomography immediately after surgery and at 6 and 12 months postoperatively to assess changes in alveolar ridge width, bone density, and marginal bone loss. The study aims to determine whether the Carrot Technique provides comparable or superior outcomes to GBR for horizontal ridge augmentation associated with implant placement.

Studietype

Intervensjonell

Registrering (Antatt)

20

Fase

  • Ikke aktuelt

Kontakter og plasseringer

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

Studiesteder

  • Egypt
      • Al Mansurah, Egypt
        • Faculty of Dentistry, Mansoura University
    • Dakahlia Governorate
      • Al Mansurah, Dakahlia Governorate, Egypt, 35511
        • Faculty of Dentistry, Mansoura University

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

  • Voksen

Tar imot friske frivillige

Nei

Beskrivelse

Inclusion Criteria:

  • Patients aged 18 to 45 years. Missing a single tooth in the maxillary esthetic zone requiring implant placement.

Good oral hygiene and patient compliance. Medically free from systemic diseases that contraindicate implant surgery. Slight to moderate horizontal alveolar ridge deficiency with a minimum ridge width of 5 mm.

Adequate vertical bone height for implant placement. Medium to hard bone quality (D2-D3 according to Misch classification). Absence of bruxism or other parafunctional habits.

Exclusion Criteria:

  • Presence of local pathological lesions (e.g., cysts or tumors) at the planned surgical site.

Poor bone quality (D4 bone). Pregnancy. Heavy smoking. Any medical condition contraindicating implant surgery.

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: Dobbelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Carrot Technique
Implant placement with horizontal ridge augmentation using an autogenous bone core harvested with a trephine drill from the implant osteotomy site and fixed buccally using osteosynthesis screws.
Fremgangsmåte: Carrot Technique
Implant placement with simultaneous horizontal ridge augmentation using an autogenous bone core harvested from the implant osteotomy site with a trephine drill and fixed buccally using osteosynthesis screws.
Aktiv komparator: Guided Bone Regeneration
Implant placement with horizontal ridge augmentation using bone substitute material and a collagen membrane according to guided bone regeneration principles.
Fremgangsmåte: Guided Bone Regeneration
Implant placement with simultaneous horizontal ridge augmentation using bone substitute material and a collagen membrane according to guided bone regeneration principles.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in Alveolar Ridge Width
Tidsramme: baseline and 12 Months
Horizontal alveolar ridge width measured using cone beam computed tomography (CBCT). Changes in ridge width will be calculated by comparing measurements obtained immediately after surgery and at follow-up.
baseline and 12 Months

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Marginal Bone Loss
Tidsramme: 12 Months
Marginal bone loss measured radiographically using CBCT using the implant as a reference.
12 Months
Soft Tissue Healing
Tidsramme: 1 Week, 2 Weeks, and 1 Month
Soft tissue healing assessed using the Landry Healing Index.
1 Week, 2 Weeks, and 1 Month
Modified Sulcus Bleeding Index
Tidsramme: 1 Month and 12 Months
Peri-implant soft tissue inflammation assessed using the Modified Sulcus Bleeding Index (mBI).
1 Month and 12 Months
Bone Density
Tidsramme: 12 Months
Buccal peri-implant bone density measured using CBCT and expressed in Hounsfield Units.
12 Months
Implant Stability Quotient (ISQ)
Tidsramme: At implant placement and 12 months
Implant stability assessed using resonance frequency analysis and expressed as Implant Stability Quotient (ISQ).
At implant placement and 12 months

Samarbeidspartnere og etterforskere

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

Sponsor

Mansoura University

Etterforskere

  • Hovedetterforsker: Sarah A Elmaghraby, Faculty of Dentistry, Mansoura University, Mansoura, Egypt

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 (Faktiske)

2. august 2025

Primær fullføring (Antatt)

1. september 2026

Studiet fullført (Antatt)

1. oktober 2026

Datoer for studieregistrering

Først innsendt

22. juni 2026

Først innsendt som oppfylte QC-kriteriene

25. juni 2026

Først lagt ut (Faktiske)

26. juni 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

26. juni 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

25. juni 2026

Sist bekreftet

1. juni 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Andre studie-ID-numre

  • R.26.02.103

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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