Department of Prosthodontics, Dental School, Albert-Ludwigs University, Freiburg, Germany.
Clin Implant Dent Relat Res. 2012 Oct;14(5):633-45. doi: 10.1111/j.1708-8208.2010.00317.x. Epub 2010 Dec 22.
CAD/CAM technology in combination with zirconia ceramic has increasingly gained popularity in implant dentistry.
This narrative review presents the current knowledge on zirconia utilized as framework material for implant-borne restorations and implant abutments, laboratory tests and developments, clinical performance, and possible future trends for implant dentistry are addressed.
A review of available literature from 1990 through 2010 was conducted with search terms zirconia,""implants,""abutment,""crown," and "fixed dental prosthesis" using electronic databases (PubMed) and manual searching.
Latest applications of zirconia in implant dentistry include implant abutments, multiple unit and full-arch frameworks as well as custom-made bars to support fixed and removable prostheses. High biocompatibility, low bacterial surface adhesion as well as favorable chemical properties of zirconia ceramics are reported. Zirconia stabilized with yttrium oxide exhibits high flexural strength and fracture toughness due to a transformation toughening mechanism. Preliminary clinical data confirmed the high stability of zirconia for abutments and as a framework material for implant borne crowns and fixed dental prostheses. Zirconia abutment or framework damage has rarely been encountered. However, veneering porcelain fractures are the most common technical complication in implant-supported zirconia restorations. These porcelain veneer failures have led to concerns regarding differences in coefficient of thermal expansions between core and veneering porcelain and their respective processing techniques.
As presently evidence of clinical long-term data is missing, caution with regard to especially extensive implant-borne zirconia frameworks is recommended.
CAD/CAM 技术与氧化锆陶瓷相结合，在种植体牙科领域的应用日益普及。
本叙述性综述介绍了氧化锆作为种植体修复体和种植体基台的支架材料的现有知识，涉及实验室测试和发展、临床性能以及种植体牙科的未来可能趋势。
通过电子数据库（PubMed）和手动搜索，检索了 1990 年至 2010 年的文献，检索词为“氧化锆”、“植入物”、“基台”、“牙冠”和“固定义齿”。
氧化锆在种植体牙科中的最新应用包括种植体基台、多单位和全桥支架以及定制的支架，以支持固定和可摘义齿。氧化锆陶瓷具有高生物相容性、低细菌表面黏附性以及良好的化学性能。氧化钇稳定氧化锆由于相变增韧机制而具有高的抗弯强度和断裂韧性。初步的临床数据证实了氧化锆作为基台和种植体支持的牙冠和固定义齿支架材料的高稳定性。很少遇到氧化锆基台或支架损坏的情况。然而，饰面瓷折裂是种植体支持的氧化锆修复体最常见的技术并发症。这些瓷层折裂引起了对核心瓷和饰面瓷之间的热膨胀系数差异及其各自加工技术的关注。
由于目前缺乏临床长期数据的证据，建议对特别是广泛的种植体支持的氧化锆框架持谨慎态度。
