Guided bone regeneration (GBR) uses resorbable and non-resorbable membranes as biological barriers. This study compared the differences in hard tissue stability between GBR using evidence-based digital titanium mesh and resorbable collagen membranes during implant placement. A total of 40 patients (65 implant sites) were enrolled and divided into two groups: resorbable membrane and digital titanium mesh groups. The alveolar bone was analyzed at two- and three-dimensional levels using cone-beam computed tomography and by reconstructing and superimposing the hard tissues at four time points: preoperatively, postoperatively, before second-stage surgery, and 1 year after loading. The use of digital titanium mesh showed less alveolar bone resorption in vertical and horizontal directions two-dimensionally before the second-stage surgery and 1 year after loading. Regarding volumetric stability, the percentage of resorption after 6 months of healing with resorbable membrane coverage reached 37.5%. However, it was only 23.4% with titanium mesh. Although postoperative bone volume was greater at all labial sites with resorbable membrane than with digital titanium mesh, after substantial bone resorption within 1 year of loading, the labial bone thickness at the upper part of implants was thinner with resorbable membrane than with digital titanium mesh. Furthermore, digital titanium meshes made according to ideal bone arch contour reduced soft tissue irritation, and the exposure rate was only 10%. Therefore, although both resorbable membrane and digital titanium mesh in GBR were able to successfully reconstruct the bone defect, digital titanium meshes were better at maintaining the hard tissue volume in the osteogenic space.

引导骨再生 (GBR) 使用可吸收和不可吸收膜作为生物屏障。本研究比较了在植入过程中使用循证数字钛网和可吸收胶原膜的 GBR 之间硬组织稳定性的差异。共招募了 40 名患者（65 个植入部位）并分为两组：可吸收膜组和数字钛网组。使用锥形束计算机断层扫描在二维和三维水平上分析牙槽骨，并在四个时间点重建和叠加硬组织：术前、术后、二期手术前和负荷后 1 年。使用数字钛网在二期手术前和负重后 1 年二维显示垂直和水平方向的牙槽骨吸收较少。关于体积稳定性，可吸收膜覆盖愈合 6 个月后的吸收百分比达到 37.5%。然而，钛网仅为23.4%。尽管可吸收膜在所有唇部部位的术后骨量均大于数字钛网，但在加载后 1 年内大量骨吸收后，可吸收膜种植体上部的唇骨厚度比数字钛网更薄。此外，根据理想骨弓轮廓制作的数字钛网减少了对软组织的刺激，暴露率仅为10%。所以，