Sorensen J A, Choi C, Fanuscu M I, Mito W T
Clinical Research Center, Oregon Health Sciences University, Portland 97201-3097, USA.
J Calif Dent Assoc. 1998 Feb;26(2):130-6.
The IPS Empress system is a highly esthetic hot pressed glass ceramic material for fabrication of single crowns. Adhesive cementation of the system not only contributes to the esthetics but is necessary for increased strength of the crown. The purpose of this prospective clinical trials was to evaluate the longevity of 75 adhesively cemented Empress full crowns. An additional aim was to assess the adhesive cementation methodology and potential side effects. At the three-year point, one molar crown fractured for a 1.3 percent failure rate. The resin cementation technique that was employed exhibited a low incidence of microleakage with few clinical side effects. There was a 5.6 percent incidence of post-cementation sensitivity, with all symptoms subsiding by eight weeks. None of the crowns in the study required endodontic therapy.
IPS Empress系统是一种用于制作单冠的极具美学效果的热压玻璃陶瓷材料。该系统采用粘结式粘固不仅有助于实现美学效果，而且对于增强牙冠强度也是必要的。这项前瞻性临床试验的目的是评估75颗采用粘结式粘固的Empress全冠的使用寿命。另一个目的是评估粘结式粘固方法及潜在的副作用。在三年时间点，有一颗磨牙牙冠发生断裂，失败率为1.3%。所采用的树脂粘固技术微渗漏发生率低，临床副作用少。粘结后敏感发生率为5.6%，所有症状在八周内消退。该研究中的牙冠均无需进行牙髓治疗。
