Department of Pedodontics & Preventive Dentistry, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal 576104, India.
Kerala Institute of Medical Sciences, Trivandrum 695029, India.
ScientificWorldJournal. 2024 Jan 2;2024:9420336. doi: 10.1155/2024/9420336. eCollection 2024.
22 specimens prepared with Cention and RMGIC were embedded in primary teeth mounted in acrylic for analysing shear bond strength. Shear bond strength was analysed using a universal testing machine. The modes of failure in samples were observed under a stereomicroscope and scanning electron microscope. 22 customised samples of Cention N and RMGIC were prepared and categorised as group A and group B, respectively. The flexural and compressive strengths of these samples were evaluated using a universal testing machine.
The shear bond strength of RMGIC was higher than that of Cention N, whereas the compressive and flexural strengths of Cention N were significantly higher than those of RMGIC. The modes of failure were predominantly adhesive followed by mixed failures.
The results of this study suggest that Cention N demonstrated superior mechanical properties compared with RMGIC and can therefore be recommended for restorations in primary posterior teeth. Cention N being a smart, esthetic, self-cured, or dual-cured material with better mechanical properties offers a wide range of applicability in primary teeth.
将 22 个用 Cention 和 RMGIC 制备的样本嵌入到初级牙齿中，用丙烯酸固定以分析其剪切粘结强度。使用万能试验机分析剪切粘结强度。在体视显微镜和扫描电子显微镜下观察样本的失效模式。制备了 22 个定制的 Cention N 和 RMGIC 样本，并分别归类为 A 组和 B 组。使用万能试验机评估这些样本的弯曲强度和压缩强度。
RMGIC 的剪切粘结强度高于 Cention N，而 Cention N 的抗压强度和弯曲强度明显高于 RMGIC。失效模式主要为黏附性失效，其次为混合性失效。
本研究结果表明，Cention N 表现出比 RMGIC 更优异的机械性能，因此可推荐用于修复初级后牙。Cention N 作为一种智能、美观、自固化或双重固化材料，具有更好的机械性能，在初级牙齿中具有广泛的适用性。
