Al-Makramani Bandar M A, Razak A A A, Abu-Hassan M I
Postgraduate Student, Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, MalaysiaHead, Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, MalaysiaDean, Department of Restorative Dentistry, Faculty of Dentistry, Universiti Teknologi MARA, Shah Alam, Malaysia.
J Prosthodont. 2008 Feb;17(2):120-124. doi: 10.1111/j.1532-849X.2007.00270.x. Epub 2007 Nov 28.
The current study investigated the effect of different luting agents on the fracture resistance of Procera AllCeram copings.
Six master dies were duplicated from the prepared maxillary first premolar tooth using nonprecious metal alloy (Wiron 99). Thirty copings (Procera AllCeram) of 0.6-mm thickness were manufactured. Three types of luting media were used: zinc phosphate cement (Elite), glass ionomer cement (Fuji I), and dual-cured composite resin cement (Panavia F). Ten copings were cemented with each type. Two master dies were used for each group, and each of them was used to lute five copings. All groups were cemented according to manufacturer's instructions and received a static load of 5 kg during cementation. After 24 hours of distilled water storage at 37 degrees C, the copings were vertically compressed using a universal testing machine at a crosshead speed of 1 mm/min.
ANOVA revealed significant differences in the load at fracture among the three groups (p < 0.001). The fracture strength results showed that the mean fracture strength of zinc phosphate cement (Elite), glass ionomer cement (Fuji I), and resin luting cement (Panavia F) were 1091.9 N, 784.8 N, and 1953.5 N, respectively.
Different luting agents have an influence on the fracture resistance of Procera AllCeram copings.
本研究调查了不同粘结剂对Procera全瓷冠抗折性的影响。
使用非贵金属合金（Wiron 99）从制备好的上颌第一前磨牙复制六个主模型。制作30个厚度为0.6毫米的全瓷冠（Procera AllCeram）。使用三种粘结介质：磷酸锌水门汀（Elite）、玻璃离子水门汀（Fuji I）和双固化复合树脂水门汀（Panavia F）。每种粘结剂粘结10个全瓷冠。每组使用两个主模型，每个主模型用于粘结五个全瓷冠。所有组均按照制造商的说明进行粘结，粘结过程中承受5千克的静载。在37℃蒸馏水中储存24小时后，使用万能试验机以每分钟1毫米的十字头速度对全瓷冠进行垂直压缩。
方差分析显示三组之间的断裂载荷存在显著差异（p < 0.001）。抗折强度结果表明，磷酸锌水门汀（Elite）、玻璃离子水门汀（Fuji I）和树脂粘结水门汀（Panavia F）的平均抗折强度分别为1091.9牛、784.8牛和1953.5牛。
不同的粘结剂对Procera全瓷冠的抗折性有影响。
