Autogenous Bone Ring Versus Split Bone Block for Management of Posterior Atrophic Mandible

NCT ID: NCT07140887

Last Updated: 2025-08-26

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 16 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-08-26
• Study Completion Date: 2025-08-05

Brief Summary

Teeth loss in the posterior mandible initiates residual ridge resorption especially in vertical direction, this causes difficulty in implant placement so ridge augmentation must be done either simultaneous with implant placement or in a staged approach Aim: To evaluate the effect of bone ring technique versus split bone block technique with simultaneous implant clinically on primary and secondary

Conditions

Ridge Augmentation

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

Bone ring technique

Group Type: EXPERIMENTAL

Bone Ring

Intervention Type: OTHER

Patients in this group will be treated with the bone ring technique. An implant drill will be used next to prepare central osteotomies corresponding to the final implant diameter to be placed in the center of the disc converting it to a "bone ring".

Split bone block technique

Group Type: ACTIVE_COMPARATOR

Split Bone block

Intervention Type: OTHER

Patients of this group will be treated with split bone block with simultaneous implant technique. The bone shell will be split into two bone shells each 1 \~ 2 mm in thickness using a disc.

Interventions

Bone Ring

Patients in this group will be treated with the bone ring technique. An implant drill will be used next to prepare central osteotomies corresponding to the final implant diameter to be placed in the center of the disc converting it to a "bone ring".

Intervention Type: OTHER

Split Bone block

Patients of this group will be treated with split bone block with simultaneous implant technique. The bone shell will be split into two bone shells each 1 \~ 2 mm in thickness using a disc.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Patients with missing posterior mandibular teeth.
• Vertical bone defect from 3 to 4 mm.
• Adequate zone of keratinized tissue.

Exclusion Criteria

• Presence of infection or periapical lesions in adjacent teeth.
• Medically compromised patients with a condition that affects the procedure.
• Insufficient inter-arch distance.
• Bruxism or clenching.
• Alcoholism.
• Heavy Smokers.

• Minimum Eligible Age: 35 Years
• Maximum Eligible Age: 50 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Alexandria University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Outpatient Clinic of Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University, Egypt

Alexandria, Azarita, Egypt

Countries

Egypt

Other Identifiers

0917-05/2024

Identifier Type: -

Identifier Source: org_study_id