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The effect of flap elevation and the extended guided bone regeneration on the facial bone wall of adjacent teeth in the anterior maxilla: a retrospective cohort study

The effect of flap elevation and the extended guided bone regeneration on the facial bone wall of adjacent teeth in the anterior maxilla: a retrospective cohort study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2500099603
Enrollment
Unknown
Registered
2025-03-26
Start date
2023-08-16
Completion date
Unknown
Last updated
2025-03-31

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

dentition defect

Interventions

Non E-GBR group:none
Partially E-GBR group:none
Fully E-GBR:none

Sponsors

Department of Oral Implantology, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510182, Guangdong, China.
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 70 Years

Inclusion criteria

Inclusion criteria: 1. patient aged >=18 years. 2. patients with systemic health or controlled medical conditions. 3. patients with treated periodontal conditions. 4. one or more edentulous sites scheduled for guided bone regeneration in the anterior maxilla with natural adjacent teeth. 5. two vertical-releasing incisions (trapezoidal flap designs) were made one tooth away from the edentulous site.

Exclusion criteria

Exclusion criteria: 1. Systemic/local conditions impairing healing (e.g., uncontrolled diabetes, active infection). 2. Postoperative surgical site infection. 3. Incomplete clinical records (pre-/postoperative CBCT, intraoral photographs). 4. Poor-quality CBCT images precluding analysis.

Design outcomes

Primary

MeasureTime frame
the thickness of the facial bone wall;the distance between the cemento-enamel junction (CEJ) and the facial bone crest (FBC);

Countries

China

Contacts

Public ContactShiyong Zhao

Affiliated Stomatology Hospital of Guangzhou Medical University

syzhao@gzhmu.edu.cn+86 186 2081 3678

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: May 1, 2026