CAD/CAM氧化锆全瓷在口腔修复领域的应用

回顾全瓷修复的发展历史．其美观逼真的修复效果早已被广大医生和患者所认可。而其强度一直是人们关注的焦点。目前全瓷材料的种类较多，如白榴石、锂基瓷、氧化铝、氧化锆等，制作方法也各有不同，如渗透陶瓷、热压铸造陶瓷、瓷沉积、计算机辅助设计与计算机辅助制作（CAD／CAM）等，其强度也越来越高，修复适应证也越来越广。在所有全瓷修复材料中，以CAD／CAM二氧化锆全瓷的抗弯强度最高㈣。CAD／CAM修复技术是将光电子技术、计算机技术及自控机械加工技术合并用于口腔修复的新技术。该技术起于20世纪70年代。但应用范围有限，效果也不尽人意。随着电子计算机技术与修复材料的迅速发展。有关该技术的研究越来越多㈤．其在口腔修复中的应用也越来越广。我国从2004年开始在临床上应用CAD／CAM氧化锆全瓷修复技术。

The use of CAD/CAM system with zirconia in modern prosthodontics

Computer assisted design/computer assisted machining (CAD/CAM) technology has received considerable clinical and research interest from modern dental practices as a means of delivering all-ceramic restorations. Up to now the CAD/CAM system with zirconia has the highest fracture strength in all all-ceramic materials, and consistently enabled the most esthetic, lifelike reproduction of natural dentition. They have been widely received by both dentists and patients. The CAD/CAM system with zirconia is indicated for crowns and bridges in natural teeth or implants and telescope dentures, the CAD/CAM with zirconia can be placed anywhere in the mouth, and can replace the porcelain crowns and bridges for single crown and bridges less than 6 units. This paper described the techniques of CAD/CAM system with zirconia in fabrication of crowns, bridges, telescope dentures and implant dentures with colored illustrations.