Ibarra Emily T, Lien Wen, Casey Jeffery, Dixon Sara A, Vandewalle Kraig S
Gen Dent. 2015 May-Jun;63(3):51-6.
A new nanohybrid composite activated by sonic energy has been recently introduced as a single-step, bulk-fill restorative material. The purpose of this study was to compare the physical properties of this new composite to various other composite restorative materials marketed for posterior or bulk-fill placement. The following physical properties were examined: depth of cure, volumetric shrinkage, flexural strength, flexural modulus, fracture toughness, and percent porosity. A mean and standard deviation were determined per group. One-way ANOVA and Tukey's post hoc tests were performed per property (α = 0.05). Percent porosity was evaluated with a Kruskal-Wallis/Mann-Whitney test (α = 0.005). Significant differences were found between groups (P < 0.001) per test type. Compared to the other composite restorative materials, the new nanohybrid composite showed low shrinkage and percent porosity, moderate fracture toughness and flexural modulus, and high flexural strength. However, it also demonstrated a relatively reduced depth of cure compared to the other composites.
一种由声能激活的新型纳米杂化复合材料最近被作为一种单步、大块充填修复材料引入。本研究的目的是将这种新型复合材料的物理性能与其他用于后牙或大块充填的市售复合修复材料进行比较。检测了以下物理性能：固化深度、体积收缩率、弯曲强度、弯曲模量、断裂韧性和孔隙率百分比。每组确定均值和标准差。对每个性能进行单向方差分析和Tukey事后检验（α = 0.05）。孔隙率百分比采用Kruskal-Wallis/Mann-Whitney检验进行评估（α = 0.005）。每种测试类型的组间均发现显著差异（P < 0.001）。与其他复合修复材料相比，新型纳米杂化复合材料显示出低收缩率和孔隙率百分比、中等断裂韧性和弯曲模量以及高弯曲强度。然而，与其他复合材料相比，它的固化深度也相对降低。
