Lath Harshita, Patri Gaurav, Bajoria Atul Anand, Banka Aanchal
Department of Conservative Dentistry and Endodontics, Kalinga Institute of Dental Sciences, KIIT Deemed to be University, Bhubaneswar, Odisha, India.
Department of Oral Medicine and Radiology, Kalinga Institute of Dental Sciences, KIIT Deemed to be University, Bhubaneswar, Odisha, India.
Contemp Clin Dent. 2023 Oct-Dec;14(4):277-281. doi: 10.4103/ccd.ccd_140_23. Epub 2023 Dec 19.
The aim was the study was to evaluate and compare the mechanical properties of ACTIVA Bioactive Base/Liner (ABBL) enhanced with phytosynthesized titanium dioxide nanoparticles (nTiO) and nano-curcumin (nCur).
Thirty samples each of ABBL (Group 1), ABBL + nTiO (Group 2), and ABBL + nCur (Group 3) were prepared for testing the compressive strength (CS) and flexural strength (FS). Forty-five cylinders (15 per group) (6 mm × 4 mm) were fabricated for CS and 45 for three-point bending FS measurements (22 mm × 2 mm × 2 mm). They were tested in a universal testing machine at a crosshead speed of 0.5 mm/min for CS and 0.5 mm/min with 20 mm space between the two supports for FS measurements.
Intergroup comparison of CS and FS was assessed using one-way ANOVA. The level of significance was set at 0.05.
Intergroup comparison showed an overall significant difference ( = 0.016 for CS) and ( = 0.001 for FS), where Group 1 had the highest and Gr 3 the least strength. No significant difference was observed between Group 1 and Group 2, while Group 3 showed significantly low strength when compared to Group 1.
ABBL + 3% nTiO showed nonsignificant decrease while ABBL + 7% nCur showed significant decrease in mechanical properties.
本研究旨在评估和比较添加植物合成二氧化钛纳米颗粒（nTiO）和纳米姜黄素（nCur）的ACTIVA生物活性基底/衬层（ABBL）的力学性能。
制备了ABBL（第1组）、ABBL + nTiO（第2组）和ABBL + nCur（第3组）各30个样本，用于测试抗压强度（CS）和抗弯强度（FS）。制作了45个圆柱体（每组15个）（6毫米×4毫米）用于CS测试，45个用于三点弯曲FS测量（22毫米×2毫米×2毫米）。在万能试验机上对它们进行测试，CS测试时十字头速度为0.5毫米/分钟，FS测量时两个支撑之间的间距为20毫米，十字头速度为0.5毫米/分钟。
使用单因素方差分析评估CS和FS的组间比较。显著性水平设定为0.05。
组间比较显示总体存在显著差异（CS的P值 = 0.016）和（FS的P值 = 0.001），其中第1组强度最高，第3组强度最低。第1组和第2组之间未观察到显著差异，而与第1组相比，第3组显示出显著较低的强度。
ABBL + 3% nTiO的力学性能无显著下降，而ABBL + 7% nCur的力学性能显著下降。
