The Influence of Different Guided Bone Regeneration Procedures on the Contour of Bone Graft after Wound Closure: A Retrospective Cohort Study

• Main Authors: Maoxia Wang, Xiaoqing Zhang, Yazhen Li, Anchun Mo
• Format: Article
• Language: English
• Published: MDPI AG 2021-01-01
• Series: Materials
• Subjects: guided bone regeneration; wound closure; computer-aided surgery; lateral ridge augmentation; bone defect
• Online Access: https://www.mdpi.com/1996-1944/14/3/583

The aim of this study was to evaluate the impact of different guided bone regeneration (GBR) procedures on bone graft contour after wound closure in lateral ridge augmentation. A total of 48 patients with 63 augmented sites were included in this study. Participants were divided into 4 groups (<i>n</i> = 12 in each group) based on different surgical procedures: group 1: particulate bone substitute + collagen membrane; group 2: particulate bone substitute + collagen membrane + healing cap, group 3: particulate bone substitute + injectable platelet-rich fibrin (i-PRF) + collagen membrane; group 4: particulate bone substitute + i-PRF + surgical template + collagen membrane. After wound closure, the thickness of labial graft was measured at 0–5 mm apical to the implant shoulder (T0–T5). At T0–T2, the thickness of labial graft in group 4 was significantly higher than the other three groups (<i>p</i> < 0.05). And group 4 showed significantly more labial graft thickness than group 1 and group 2 at T3–T5 (<i>p</i> < 0.05). Within the limitations of this study, the use of i-PRF in combination with the surgical template in GBR may contribute to achieving an appropriate bone graft contour after wound closure.