Jamaluddin A, Pearson G J
Institute of Dental Surgery, British Postgraduate Medical Federation, London, U.K.
J Oral Rehabil. 1994 Nov;21(6):649-53. doi: 10.1111/j.1365-2842.1994.tb01180.x.
Two chemically different glass ionomer cements (Ketac Fil and ChemFil II Caps) and three different methods of conditioning the surface for repair were evaluated. Specimens of each material were prepared, aged and sectioned. The cut surfaces were treated with either phosphoric acid, polyacrylic acid or a combination of phosphoric acid followed by polyacrylic acid. Freshly mixed glass ionomer cement was injected against the treated surface and allowed to set under simulated intra-oral conditions. The specimens were then tested to failure in flexion after 7 days storage. The flexural strength of the repaired specimens was compared with that of control specimens of the same materials. The flexural strength of the repaired specimens was less than that of the controls. Treatment of the fractured surface with polyacrylic acid produced the weakest repair, and the use of phosphoric acid as the conditioning agent produced repaired specimens approximately 80% of the strength of the controls.
对两种化学性质不同的玻璃离子水门汀（Ketac Fil和ChemFil II Caps）以及三种不同的表面处理修复方法进行了评估。制备每种材料的样本，进行老化处理并切片。切割面分别用磷酸、聚丙烯酸或先用磷酸再用聚丙烯酸的组合进行处理。将新混合的玻璃离子水门汀注射到处理过的表面上，并在模拟口腔条件下凝固。然后将样本在储存7天后进行弯曲破坏测试。将修复样本的弯曲强度与相同材料的对照样本进行比较。修复样本的弯曲强度低于对照样本。用聚丙烯酸处理断裂表面产生的修复效果最弱，而使用磷酸作为处理剂产生的修复样本强度约为对照样本的80%。
