Parpaiola Andrea, Toia Marco, Norton Michael, Cecchinato Denis, Bressan Eriberto, Lops Diego
Int J Periodontics Restorative Dent. 2020 Mar/Apr;40(2):193-201. doi: 10.11607/prd.3597.
This retrospective study evaluated hard and soft tissue response and reported mechanical and technical complications around computer-aided design/computer-assisted manufactured (CAD/CAM) abutments. A total of 123 patients restored with titanium, gold-hue titanium, and zirconia CAD/CAM abutments were included (N = 291). Each patient was followed up for at least 2 years. Clinical and radiographic parameters were assessed annually and complications were recorded. No implant or reconstruction failures were reported. One fracture of a zirconia abutment occurred. The prosthetic survival rate after 4 years of function for restorations and abutments was 100% and 99.66%, respectively. No significant differences in biologic and radiographic indices were found. The bleeding on probing index was positive at 42% of implant sites, and it had no significant correlation with the overall change in marginal bone level (0.02 mm) of bone gain. The short-term survival of CAD/CAM abutments was reliable, no matter of the material used for manufacturing.
这项回顾性研究评估了计算机辅助设计/计算机辅助制造（CAD/CAM）基台周围的软硬组织反应，并报告了机械和技术并发症。共纳入123例使用钛、金色钛和氧化锆CAD/CAM基台进行修复的患者（N = 291）。每位患者至少随访2年。每年评估临床和影像学参数并记录并发症。未报告种植体或修复失败情况。发生了1例氧化锆基台骨折。修复体和基台在功能4年后的修复体生存率分别为100%和99.66%。未发现生物学和影像学指标有显著差异。42%的种植体部位探诊出血指数为阳性，且与边缘骨水平的总体变化（骨增量0.02 mm）无显著相关性。无论制造基台所用的材料如何，CAD/CAM基台的短期生存率都是可靠的。
