PDF(Pubmed)
Abstract：
UNASSIGNED: Recently, a group of universal single-shade resin-based composites (RBCs) has been developed to simplify the process of shade selection. Excellent mechanical and physical properties are crucial for the ultimate success and clinical longevity of restorations. Therefore, evaluating the properties of the single-shaded RBCs is imperative. This study aimed to determine the flexural strength (FS) and degree of conversion (DC) of universal single-shade RBCs.
UNASSIGNED: In this study, four commercial RBCs were used; three universal single-shade RBCs; Omnichroma (OC), Charisma® Diamond ONE (CD), and Vittra APS Unique (VU), and a conventional nanohybrid composite Filtek™ Z250 XT (FT) which was used as a control. Sixty composite beams and 40 composite discs were used for FS and DC, respectively. A universal test machine with a three-point bending test was used to measure the FS, whereas the DC was measured using a Fourier-transform infrared spectrometer (FTIR). Three fractured specimens from each resin composite group were qualitatively analyzed using scanning electron microscopy.
UNASSIGNED: ANOVA was used to compare the mean values of FS and DC among the four RBCs (OC, CD, VU, and FT). Highly significant differences were observed in the mean FS and DC values (F = 673.043, p < 0.001 and F (=782.4, p < 0.0001), respectively. The highest FS was observed in the CD group, followed by FT and VU groups; the lowest value was observed in the OC group. In addition, a statistically significant difference was identified in DC values. The highest DC value was observed in VU, followed by OC and CD, and the lowest DC value was observed in FT.
UNASSIGNED: Universal single-shade RBCs demonstrated a good FS, except for OC, which exhibited a significantly low FS. The DC of the universal single-shade RBCs was higher than that of the conventional nanohybrid composite restorative material.
UNASSIGNED: In this study, four commercial RBCs were used; three universal single-shade RBCs; Omnichroma (OC), Charisma® Diamond ONE (CD), and Vittra APS Unique (VU), and a conventional nanohybrid composite Filtek™ Z250 XT (FT) which was used as a control. Sixty composite beams and 40 composite discs were used for FS and DC, respectively. A universal test machine with a three-point bending test was used to measure the FS, whereas the DC was measured using a Fourier-transform infrared spectrometer (FTIR). Three fractured specimens from each resin composite group were qualitatively analyzed using scanning electron microscopy.
UNASSIGNED: ANOVA was used to compare the mean values of FS and DC among the four RBCs (OC, CD, VU, and FT). Highly significant differences were observed in the mean FS and DC values (F = 673.043, p < 0.001 and F (=782.4, p < 0.0001), respectively. The highest FS was observed in the CD group, followed by FT and VU groups; the lowest value was observed in the OC group. In addition, a statistically significant difference was identified in DC values. The highest DC value was observed in VU, followed by OC and CD, and the lowest DC value was observed in FT.
UNASSIGNED: Universal single-shade RBCs demonstrated a good FS, except for OC, which exhibited a significantly low FS. The DC of the universal single-shade RBCs was higher than that of the conventional nanohybrid composite restorative material.
摘要：
■最近，已开发出一组通用的单阴影树脂基复合材料（RBC），以简化阴影选择过程。优异的机械和物理性能对于修复体的最终成功和临床寿命至关重要。因此,评估单阴影红细胞的特性是当务之急。这项研究旨在确定通用单色调红细胞的弯曲强度（FS）和转化度（DC）。
■在这项研究中，使用了四种商业红细胞；三种通用单色泽红细胞；全色(OC)，Charisma®DiamondONE(CD),和VittraAPSUnique（VU），和用作对照的常规纳米杂化复合材料Filtek™Z250XT(FT)。FS和DC使用了60个复合梁和40个复合圆盘，分别。具有三点弯曲试验的通用试验机用于测量FS，而DC是使用傅里叶变换红外光谱仪（FTIR）测量的。使用扫描电子显微镜对每个树脂复合材料组的三个断裂试样进行定性分析。
■ANOVA用于比较四个RBC中FS和DC的平均值（OC，CD,VU,和FT）。在平均FS和DC值（F=673.043，p<0.001和F（=782.4，p<0.0001）中观察到高度显着差异，分别。CD组FS最高，其次是FT和VU组；OC组观察到最低值。此外,发现DC值存在统计学显著差异.在VU中观察到最高的DC值，其次是OC和CD，在FT中观察到最低的DC值。
■通用单阴影红细胞表现出良好的FS，除了OC,表现出显著的低FS。通用单阴影红细胞的DC高于常规纳米杂化复合修复材料。
■在这项研究中，使用了四种商业红细胞；三种通用单色泽红细胞；全色(OC)，Charisma®DiamondONE(CD),和VittraAPSUnique（VU），和用作对照的常规纳米杂化复合材料Filtek™Z250XT(FT)。FS和DC使用了60个复合梁和40个复合圆盘，分别。具有三点弯曲试验的通用试验机用于测量FS，而DC是使用傅里叶变换红外光谱仪（FTIR）测量的。使用扫描电子显微镜对每个树脂复合材料组的三个断裂试样进行定性分析。
■ANOVA用于比较四个RBC中FS和DC的平均值（OC，CD,VU,和FT）。在平均FS和DC值（F=673.043，p<0.001和F（=782.4，p<0.0001）中观察到高度显着差异，分别。CD组FS最高，其次是FT和VU组；OC组观察到最低值。此外,发现DC值存在统计学显著差异.在VU中观察到最高的DC值，其次是OC和CD，在FT中观察到最低的DC值。
■通用单阴影红细胞表现出良好的FS，除了OC,表现出显著的低FS。通用单阴影红细胞的DC高于常规纳米杂化复合修复材料。
