Unit of Oral and Maxillofacial Surgery, Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum - University of Bologna, Bologna, Italy.
Clin Implant Dent Relat Res. 2017 Oct;19(5):821-832. doi: 10.1111/cid.12520. Epub 2017 Jul 26.
The partial edentulous posterior mandible is often a challenge area that requires a bone reconstructive surgery for implants placement.
This RCT was aimed to evaluate complications rate and vertical bone gain after Guided Bone Regeneration (GBR) with dense non-resorbable d-PTFE titanium-reinforced membranes (Group A) versus titanium meshes covered by cross-linked collagen membranes (Group B).
40 partially edentulous patients with atrophic posterior mandible, were randomly divided into two study group: 20 patients were treated with one stage GBR by means of non-resorbable d-PTFE titanium-reinforced membranes (Group A); and 20 patients, by means of titanium mesh covered by cross-linked collagen membranes (Group B). All complications were recorded, distinguishing between "surgical" and "healing" and between "minor" or "major.". Primary implants stability and vertical bone gain were also evaluated.
In the group A, surgical and healing complication rates were 5.0% and 15.0%, respectively. In the group B, surgical and healing complication rates were 15.8% and 21.1%, respectively. No significant differences between two study group were observed regarding complications rate implant stability and vertical bone gain.
Both GBR approaches for the restoration of atrophic posterior mandible achieved similar results regarding complications, vertical bone gain and implant stability.
下颌后牙部分缺失区域常常是一个具有挑战性的部位，需要进行骨重建手术以植入种植体。
本随机对照试验旨在评估引导骨再生（GBR）后并发症发生率和垂直骨增量，使用致密不可吸收的聚四氟乙烯增强型钛膜（A 组）与交联胶原膜覆盖的钛网（B 组）。
40 名下颌后牙部分缺失伴萎缩的患者，随机分为两组：20 名患者采用不可吸收的聚四氟乙烯增强型钛膜（A 组）进行一期 GBR；20 名患者采用交联胶原膜覆盖的钛网（B 组）。记录所有并发症，分为“手术”和“愈合”，以及“轻微”或“严重”。还评估了主要种植体稳定性和垂直骨增量。
A 组的手术和愈合并发症发生率分别为 5.0%和 15.0%。B 组的手术和愈合并发症发生率分别为 15.8%和 21.1%。两组在并发症发生率、种植体稳定性和垂直骨增量方面无显著差异。
两种用于修复下颌后牙萎缩的 GBR 方法在并发症、垂直骨增量和种植体稳定性方面的结果相似。
