J Periodontal Implant Sci.  2021 Dec;51(6):433-443. 10.5051/jpis.2103780189.

Effectiveness of dental implantation with the partial split-flap technique on vertical guided bone regeneration: a retrospective study

• Cho YD
• Kim S
• Ku Y

• KMID: 2557521
• DOI: http://doi.org/10.5051/jpis.2103780189

Abstract

Purpose
This study aimed to evaluate the effectiveness of the partial split-flap technique with a K-incision on vertical guided bone regeneration (vGBR) and to retrospectively analyze the clinical and radiographic outcomes of dental implantation using this approach.
Methods
In total, 78 patients who received 104 dental implants with vGBR, categorized as (1) pre-GBR and post-implantation and (2) simultaneous GBR and implantation, were enrolled. Data analysis was based on periapical radiographs, clinical photos, and dental records. The 2-sample t-test was used to compare the 2 surgical procedures.
Results
The baseline vertical bone level, augmented bone height (ABH), and treatment duration were significantly higher in the pre-GBR procedure group. The survival rates of the implants were 96.1% and 94.8% in implant- and patient-based analyses, respectively. In Cox regression analysis, high rates of implant failure were found in the presence of ABH of ≥4 mm, smoking, and diabetes.
Conclusions
Within the limitations of this retrospective study, the partial split-flap technique using a K-incision for vGBR showed stable clinical outcomes and favorable dental implant survival.

Keyword

Bone regeneration; Dental implants; Survival rate