Shivanna Sushmita, Roshan Samuel, Sameera S, Sivakumar Murali, Ravi Megavarnan, Ram Sarvesh Ls
Department of Conservative Dentistry and Endodontics, Sathyabama Dental College and Hospital, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, India.
J Pharm Bioallied Sci. 2025 Jun;17(Suppl 2):S1916-S1919. doi: 10.4103/jpbs.jpbs_1947_24. Epub 2025 Jun 18.
This study compares the hardness of ceramic-reinforced glass ionomer cement (Amalgomer CR), resin-modified glass ionomer cement (RMGIC), and conventional glass ionomer cement (GIC) using Vicker's microhardness tester.
Nine disc-shaped specimens (5mm diameter, 2mm thickness) were prepared from three materials: Group A (GIC), Group B (Amalgomer CR), and Group C (RMGIC). Hardness was tested after 24 hours of storage at room temperature.
Group B showed the highest mean hardness (66.13±5.25), followed by Group A (65.63±8.07) and Group C (62.13±13.70). Differences were not statistically significant.
Although Amalgomer CR exhibited slightly higher hardness due to its ceramic component, the differences among the materials were not statistically significant. Clinical significance: Hardness is a key property for dental restorations, ensuring durability by resisting deformation and maintaining integrity during mastication.
本研究使用维氏显微硬度计比较陶瓷增强玻璃离子水门汀（Amalgomer CR）、树脂改性玻璃离子水门汀（RMGIC）和传统玻璃离子水门汀（GIC）的硬度。
用三种材料制备九个圆盘形试件（直径5毫米，厚度2毫米）：A组（GIC）、B组（Amalgomer CR）和C组（RMGIC）。在室温下储存24小时后测试硬度。
B组显示出最高的平均硬度（66.13±5.25），其次是A组（65.63±8.07）和C组（62.13±13.70）。差异无统计学意义。
尽管Amalgomer CR由于其陶瓷成分表现出略高的硬度，但材料之间的差异无统计学意义。临床意义：硬度是牙齿修复体的关键性能，通过在咀嚼过程中抵抗变形和保持完整性来确保耐久性。
