A 3D micro‐CT assessment of composition and structure of bone tissue after vertical and horizontal alveolar ridge augmentation using CAD/CAM‐customized titanium mesh

Abstract

AbstractObjectivesTo date, no studies have exploited micro‐CT in humans to evaluate bone morphology and structure after bone augmentation with CAD/CAM‐customized titanium mesh, in mandible and maxilla. The aim of this study was to assess the composition and microstructure of bone biopsy through micro‐CT analysis.Materials and MethodsBone augmentation at both maxillary and mandible sites was performed on 30 patients randomly treated with customized mesh, either alone (M−) or covered with resorbable membrane (M+), in both cases filled 50:50 with autogenous bone and xenograft. After 6 months, biopsies were taken and micro‐CT was performed on consecutive 1‐mm‐thick VOIs from coronal to apical side, measuring tissue volumes, trabecular thickness, spacing, and number.ResultsIn both groups, irrespective of membrane use, bone tissue (M−: 29.76% vs. M+: 30.84%) and residual graft material (M−: 14.87% vs. M+: 13.11%) values were similar. Differences were site‐related (maxillary vs. mandibular) with higher percentage of bone tissue and trabecular density of low‐mineralized bone and overall bone in the mandible.ConclusionsThe composition and structure of bone tissue, as assessed by micro‐CT after alveolar ridge augmentation using CAD/CAM‐customized titanium meshes, showed similar features regardless of whether a collagen membrane was applied.