Abd Wahab Mohd Helmy Khalid, Bakar Wan Zaripah Wan, Husein Adam
School of Dental Sciences, Universiti Sains Malaysia Kubang Kerian, Kelantan, Malaysia.
J Conserv Dent. 2011 Oct;14(4):387-90. doi: 10.4103/0972-0707.87207.
Porcelain from prosthesis such as crown or bridge can be fractured if exposed to trauma; and, can be repaired at chairside using composite resin.
To investigate the fracture resistance of few techniques of surface preparation in repairing fractured porcelain using composite resin.
Eighty samples of porcelain blocks were divided into 4 groups for different surface preparations, such as, Cimara repairing kit; porcelain etch kit containing hydrofluoric acid; Panavia F resin cement; and, sandblasting using aluminium oxide, before composite resin (Filtek Z250, 3M ESPE) was bonded to the prepared porcelain blocks. Twenty others samples in the control group comprised of pure porcelain blocks. The fracture resistance of each sample was tested using Instron machine (UK).
With the exception of the group repaired using hydrofluoric acid (3.04±1.04 Mpa), all the other groups showed significant difference in the fracture resistance values when compared to the control group (3.05 ± 1.42 MPa) at P<0.05.
Etching of the porcelain blocks with hydrofluoric acid holds promise in the repair of fractured porcelain with composite resin at chairside.
诸如牙冠或牙桥等修复体上的瓷质若受到创伤可能会断裂；并且，可以在椅旁使用复合树脂进行修复。
研究使用复合树脂修复断裂瓷质时几种表面处理技术的抗折强度。
将80个瓷块样本分为4组进行不同的表面处理，例如，Cimara修复套件；含氢氟酸的瓷蚀刻套件；Panavia F树脂水门汀；以及，在将复合树脂（Filtek Z250，3M ESPE）粘结到制备好的瓷块之前，用氧化铝进行喷砂处理。对照组的另外20个样本由纯瓷块组成。使用英斯特朗机器（英国）测试每个样本的抗折强度。
除了使用氢氟酸修复的组（3.04±1.04兆帕）外，与对照组（3.05±1.42兆帕）相比，所有其他组在抗折强度值上均显示出显著差异（P<0.05）。
用氢氟酸蚀刻瓷块有望在椅旁用复合树脂修复断裂的瓷质。
