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

NCT07670559 | Active Not Recruiting

• 1 other identifier: R.26.02.103
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 2

Brief Summary

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..

Conditions

Horizontal Alveolar Ridge Deficiency; Partial Edentulism

Keywords

Dental Implant;; Horizontal Ridge Augmentation;; Alveolar Ridge Deficiency;; Guided Bone Regeneration;; Carrot Technique;; Maxillary Esthetic Zone

Outcome Measures

Primary Outcomes (1)

• Change in Alveolar Ridge Width

  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

Secondary Outcomes (5)

• Marginal Bone Loss

  12 Months

• Soft Tissue Healing

  1 Week, 2 Weeks, and 1 Month

• Modified Sulcus Bleeding Index

  1 Month and 12 Months

• Bone Density

  12 Months

• Implant Stability Quotient (ISQ)

  At implant placement and 12 months

Study Arms (2)

Carrot Technique

EXPERIMENTAL

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.

Procedure: Carrot Technique

Guided Bone Regeneration

ACTIVE COMPARATOR

Implant placement with horizontal ridge augmentation using bone substitute material and a collagen membrane according to guided bone regeneration principles.

Procedure: Guided Bone Regeneration

Interventions

Carrot Technique PROCEDURE

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.

Carrot Technique

Guided Bone Regeneration PROCEDURE

Implant placement with simultaneous horizontal ridge augmentation using bone substitute material and a collagen membrane according to guided bone regeneration principles.

Guided Bone Regeneration

Eligibility Criteria

• Age: 18 Years - 45 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• 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.

You may not qualify if:

• 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.

Sponsors & Collaborators

• Mansoura University: lead

Study Sites (2)

Faculty of Dentistry, Mansoura University

Al Mansurah, Dakahlia Governorate, 35511, Egypt

Location

Faculty of Dentistry, Mansoura University

Al Mansurah, Egypt

Location

Study Officials

• Sarah A Elmaghraby

  Faculty of Dentistry, Mansoura University, Mansoura, Egypt

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Dr

Model Details: Participants will be randomly assigned to receive either the Carrot Technique or Guided Bone Regeneration (GBR) during implant placement for treatment of horizontal alveolar ridge deficiency in the maxillary esthetic zone.

Study Record Dates

• First Submitted: June 22, 2026
• First Posted: June 26, 2026
• Study Start: August 2, 2025
• Primary Completion (Estimated): September 1, 2026
• Study Completion (Estimated): October 1, 2026
• Last Updated: June 26, 2026

Record last verified: 2026-06

Data Sharing

• IPD Sharing: Will not share

Locations

EG (2)