Bone Barrier Technique for Compromised Immediate Implants

A Novel Bone Barrier Technique for Immediate Implant Placement With Severe Buccal Bone Dehiscence: A 1-year Case Series

The goal of this clinical study is to learn whether a new surgical method, called the Bone Barrier technique, can help improve outcomes when placing dental implants immediately after tooth removal in the front upper jaw. This study focuses on people who have a large loss of bone on the front side of the tooth socket, a condition that can make implant treatment difficult.

The main questions this study aims to answer are:

Can this technique help keep the implant stable and working after surgery? Can it help maintain the bone and gingiva shape around the implant? How satisfied are participants with the appearance and function of the implant after treatment?

This study includes adults who need an immediate dental implant in the front upper jaw and have severe bone loss on the front side of the socket. All participants receive the same surgical treatment as part of their routine dental care.

During the procedure, the surgeon places a dental implant immediately after tooth removal. A thin bone plate from donated human bone is used to rebuild the missing front bone wall, and a small piece of gum tissue is added to support the soft tissue. The surgery is done using a minimally invasive approach.

Participants will:

Receive the Bone Barrier implant procedure as part of their treatment Return for follow-up visits for routine dental examinations and CBCT imaging Be asked to rate their satisfaction with the appearance and function of the implant on a simple scale from zero to ten

This study aims to help dentists better understand whether this approach may be a useful option for treating difficult cases that involve significant bone loss in the esthetic zone.

Study Overview

• Status: Completed
• Conditions: Immediate Implant With Bone Graft
• Intervention / Treatment: Procedure: Bone barrier technique

• Study Type: Observational
• Enrollment (Actual): 10

Contacts and Locations

Study Locations

• China
  • Shanghai Municipality
    • Shanghai, Shanghai Municipality, China, 200010
      • Department of Oral Maxillofacial Implantology Shanghai Ninth People's Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Patients who received IIP with the BB technique at the Department of Oral and Maxillofacial Implantology of Shanghai Ninth People's Hospital from April 2021 to October 2023 were included. All participants provided written informed consent prior to surgical intervention.

Description

Inclusion Criteria:

(1) Presence of a non-restorable anterior tooth (canine to canine) due to severe trauma, root fracture, or endodontic failure, with healthy and natural adjacent teeth. (2) With an intact buccal gingival profile. (3) Presence of a severe buccal bone dehiscence defined as a vertical defect height of >5 mm following extraction. (4) Sufficient residual native bone volume (≥4 mm apical to the root apex) to ensure primary implant stability.

Exclusion Criteria:

(1) Uncontrolled systemic diseases (e.g., diabetes mellitus, hypertension and coronary heart disease), untreated periodontitis, acute or active infection around the surgical site, or any other conditions contraindicating oral surgery. (2) Heavy smoking habits (>10 cigarettes per day). (3) Parafunctional habits (e.g., severe bruxism). (4) Lack of compliance.

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
mid-facial gingival change	Changes in the length of this perpendicular line over time were calculated to determine soft tissue stability.	pre-operatively and up to 1-year

Collaborators and Investigators

• Sponsor: Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University

Study record dates

Study Major Dates

• Study Start (Actual): April 12, 2021
• Primary Completion (Actual): April 24, 2025
• Study Completion (Actual): January 22, 2026

Study Registration Dates

• First Submitted: February 10, 2026
• First Submitted That Met QC Criteria: February 16, 2026
• First Posted (Actual): February 17, 2026

Study Record Updates

• Last Update Posted (Actual): February 17, 2026
• Last Update Submitted That Met QC Criteria: February 16, 2026
• Last Verified: February 1, 2026

More Information

Terms related to this study

• Other Study ID Numbers: SH9H-2025-604-imp

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No