Nagrale Apurva, Nevrekar Siddhi, Kawle Sahil, Gawande Harshraj, Gupte Jaiti, Gaikwad Shashank
Department of Conservative Dentistry & Endodontics, Dr. G.D. Pol Foundation's YMT Dental College and Hospital, Navi Mumbai, IND.
Department of Orthodontics, Bharati Vidyapeeth Dental College and Hospital, Navi Mumbai, IND.
Cureus. 2023 Mar 11;15(3):e36032. doi: 10.7759/cureus.36032. eCollection 2023 Mar.
Filler size affects how the material is coated and finished, while filler stacking affects how strong the material is, how flexible it is, how resistant it is to wear, and how much it shrinks when it polymerizes. The purpose of this research was to compare micro-hybrid, nano-composite, and bulk-fill composites with respect to their compressive strength, diametric tensile strength, and flexural strength.
To organize the samples according to International Organization for Standardization (ISO) 4049 and American Dental Association (ADA) detail number 27, we used a custom-made Teflon mold. A total of 45 samples were used, with 15 samples in each group. The sample was mounted on a state-of-the-art general testing machine to determine its compressive strength and polar rigidity. The 3-point bowing test was used to determine flexural strength. A one-way analysis of variance (ANOVA) was used for quantitative analysis, followed by a post hoc test with a significance level of P < 0.05.
The Tetric N Ceram Bulk Fill, the Filtek Z350 XT nanocomposite, and the T-Econom micro-hybrid composite all had different levels of flexural and compressive strength. This difference was statistically significant. Nanocomposites have superior compressive and flexural strengths to their counterparts analyzed in the present study.
Nano-composite combines the properties of being strong and looking good. It can be used in both front and back restorations that need to be strong enough to withstand the forces of chewing.
填料尺寸会影响材料的涂布和修整方式，而填料堆积则会影响材料的强度、柔韧性、耐磨性以及聚合时的收缩程度。本研究的目的是比较微混合复合树脂、纳米复合树脂和大块填料复合树脂的抗压强度、直径拉伸强度和弯曲强度。
为了按照国际标准化组织（ISO）4049和美国牙科协会（ADA）详细编号27来组织样本，我们使用了定制的聚四氟乙烯模具。总共使用了45个样本，每组15个样本。将样本安装在一台先进的通用测试机上，以测定其抗压强度和极性刚度。采用三点弯曲试验来测定弯曲强度。使用单因素方差分析（ANOVA）进行定量分析，随后进行显著性水平为P < 0.05的事后检验。
Tetric N Ceram Bulk Fill、Filtek Z350 XT纳米复合树脂和T-Econom微混合复合树脂的弯曲强度和抗压强度各不相同。这种差异具有统计学意义。纳米复合树脂在抗压强度和弯曲强度方面优于本研究中分析的同类产品。
纳米复合树脂兼具强度高和外观好的特性。它可用于前后牙修复，这些修复需要足够坚固以承受咀嚼力。
