Gregory W A, Moss S M
Oper Dent. 1990 Jan-Feb;15(1):18-22.
Bond strengths of porcelain/composite resin repair samples, some homogeneous of conventional, hybrid, and microfill materials, some heterogeneous, made by incremental build-up of two of these composites, were evaluated. Samples were allowed to set without disturbance. After storage in 37 degrees C water for intervals of one day, seven days, and 28 days, the test samples were subjected to tensile force until fracture. There were significant differences in bond strengths of homogenous and heterogeneous samples after different storage periods. All mean repair bond strengths were significantly less at seven days than at one or 28 days. Heterogeneous repairs with larger-particle-size composite at the porcelain interface and overlayed with smaller-particle-size composites resulted in higher bond strengths than the homogeneous small-sized composite repairs. Failures of the repairs occurred at the porcelain/composite interface in a statistically significant number, implying that technique exactness at the interface plays an important role in the success of the technique.
对一些由传统、混合和微填料材料制成的均质以及一些由两种这类复合材料逐层堆积而成的异质烤瓷/复合树脂修复样本的粘结强度进行了评估。样本在不受干扰的情况下固化。在37摄氏度水中分别储存1天、7天和28天后，对测试样本施加拉力直至断裂。不同储存期后，均质和异质样本的粘结强度存在显著差异。所有平均修复粘结强度在7天时均显著低于1天或28天时。在烤瓷界面处使用较大粒径复合材料并覆盖较小粒径复合材料的异质修复，其粘结强度高于均质小粒径复合材料修复。修复失败在烤瓷/复合树脂界面处出现的数量具有统计学意义，这意味着界面处的技术精确性对该技术的成功起着重要作用。
