Zafiropoulos Gregory-George, Rebbe Jochen, Thielen Ulrich, Deli Giorgio, Beaumont Christian, Hoffmann Oliver
Department of Operative Dentistry and Periodontology, University of Mainz, Germany.
J Oral Implantol. 2010;36(6):455-65. doi: 10.1563/AAID-JOI-D-09-00065. Epub 2010 Jun 14.
This report addresses maxillary restoration with removable telescopic crown-retained palatal free dentures. One patient with 7 natural teeth (PERIO), a second patient with 6 dental implants (IMPL), and a third patient with 2 natural teeth and 4 dental implants (IMPL-PERIO) were treated. Zirconia copings for natural teeth and individual zirconia implant abutments were fabricated in CAD/CAM and used as primary crowns. Electroformed gold copings were used as secondary telescopes. All maxilla supraconstructions were fabricated with zirconia and CAD/CAM. Patients were monitored during a 3-year period; all teeth and implants survived, and no biological or mechanical complications occurred. The peri-implant and periodontal conditions were healthy. While recognizing the limitations of this report, results showed that fabricating removable zirconia structures by means of CAD/CAM can yield highly functional and esthetic results. Galvanoforming technology is the preferable means of fabricating secondary crowns. The combination of these techniques and materials results in a prosthetic reconstruction of high quality, good fit, and biocompatibility. Long-term studies of large populations are necessary to investigate the clinical properties of the material utilized in this type of construction.
本报告探讨了采用可摘式套筒冠固位腭侧游离义齿进行上颌修复的情况。对一名有7颗天然牙的患者（牙周病患者）、一名有6颗牙种植体的患者（种植体患者）以及一名有2颗天然牙和4颗牙种植体的患者（种植体 - 牙周病患者）进行了治疗。天然牙的氧化锆内冠和个性化氧化锆种植体基台采用计算机辅助设计/计算机辅助制造（CAD/CAM）制作，并用作初戴冠。电铸金内冠用作二级套筒冠。所有上颌上部结构均采用氧化锆和CAD/CAM制作。在3年期间对患者进行了监测；所有牙齿和种植体均存活，未发生生物学或机械并发症。种植体周围和牙周状况健康。尽管认识到本报告存在局限性，但结果表明，通过CAD/CAM制作可摘式氧化锆结构可产生高度功能性和美观的效果。电铸技术是制作二级冠的优选方法。这些技术和材料的结合可实现高质量、良好贴合性和生物相容性的修复重建。需要对大量人群进行长期研究，以调查此类修复中所用材料的临床特性。
