Sujith Ramachandra, Yadav Tej G, Pitalia Deepti, Babaji Prashant, Apoorva Kommula, Sharma Ankita
Department of Conservative Dentistry, Sharavathi Dental College, Shimoga, Karnataka, India.
Department of Pediatric and Preventive Dentistry, Goenka Research Institute of Dental Sciences, Gandhinagar, Gujarat, India.
J Contemp Dent Pract. 2020 Jun 1;21(6):691-695.
The longevity of restorative materials depends on the resistance to masticatory forces. The present study was undertaken to evaluate the mechanical and microleakage properties of Cention-N with glass ionomer cement (GIC) and composite restorative materials.
A total of 45 specimen blocks were prepared with 15 samples of each type of restorative material, namely Cention-N, GIC, and hybrid composite. Samples were subjected to load at crosshead speed of 0.75 ± 0.25 mm/min till the fracture of sample. Class V cavities were prepared on the buccal surface of orthodontically extracted premolars followed by restoration of each test material. All the surfaces of the tooth were coated with clear nail varnish except 1 mm around the margins of the restorations. These samples were immersed in 0.5% basic fuchsine dye and longitudinally sectioned and observed under stereomicroscope to check microleakage. The obtained data were statistically evaluated.
We found the highest mean compressive and flexural strength for hybrid composite followed by Cention-N and least for GIC which is statistically significant ( < 0.001).
Mean microleakage was least for Cention-N. Cention-N is a newer restorative material having higher mechanical properties with lesser microleakage.
Cention-N is a newer restorative material having promising properties. This material can be used as an alternative restorative material.
修复材料的使用寿命取决于对咀嚼力的抵抗力。本研究旨在评估Cention-N与玻璃离子水门汀（GIC）及复合修复材料的力学性能和微渗漏性能。
共制备45个样本块，每种修复材料各15个样本，分别为Cention-N、GIC和混合复合材料。样本以0.75±0.25mm/min的十字头速度加载直至样本断裂。在正畸拔除的前磨牙颊面制备V类洞，然后用每种测试材料进行修复。除修复体边缘周围1mm外，牙齿的所有表面均涂有透明指甲油。将这些样本浸入0.5%碱性品红染料中，纵向切片并在体视显微镜下观察以检查微渗漏情况。对获得的数据进行统计学评估。
我们发现混合复合材料的平均抗压强度和抗弯强度最高，其次是Cention-N，GIC最低，具有统计学意义（<0.001）。
Cention-N的平均微渗漏最少。Cention-N是一种新型修复材料，具有较高的力学性能和较少的微渗漏。
Cention-N是一种具有良好性能的新型修复材料。这种材料可作为替代修复材料使用。
