Dental Materials Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Ramiro Barcelos 2492, Porto Alegre, Rio Grande do Sul, Brazil.
Clin Oral Investig. 2019 Apr;23(4):1715-1721. doi: 10.1007/s00784-018-2598-4. Epub 2018 Aug 28.
The aim of this study was to evaluate the physical and mechanical properties of different dual functional cements.
Three dual functional cements (Allcem Core (FGM), Rebilda DC (VOCO), and LuxaCore Z (DMG)), a luting resin cement (Rely X ARC (3 M ESPE)), and a Core Buildup composite resin GrandioSo (VOCO) were used. Flexural strength (n = 10) and film thickness (n = 6) were evaluated according to ISO 4049:2009. Flow (n = 6) was evaluated according to ISO 6876:2001. Degree of conversion (DC) was assessed immediately and 24 h after polymerization (n = 5). For resistance to dislodgment (RD) analysis, bovine teeth were prepared to receive fiber glass posts, and a push-out test (n = 12) was used.
Luxacore Z presented lower flexural strength when compared to GrandioSo (p < 0.001). No statistical difference was found between cements for film thickness (p = 0.66). Reduced flow values were found for Allcem Core (p = 0.006). No statistical difference was found for immediate DC for different cements (p > 0.05). After 24 h, DC increased for all groups, except for Luxacore Z (p = 0.054). The RD did not differ from the control Rely X ARC, regardless of the root third (p > 0.05). Luxacore Z showed lower mean values in the apical third compared to the coronal third (p = 0.046).
The dual functional cements (Allcem Core and Rebilda DC) possessed similar physical and mechanical properties of luting resin cement (RelyX ARC) and Core Buildup composite resin (GrandioSo). Hence, they could be used for one-stage post and core buildup restorations.
The dual functional cements could be used for one-stage post and core buildup restorations since they possess similar physical and mechanical properties of luting resin cements and Core Buildup composite resin.
本研究旨在评估不同双重功能水泥的物理和机械性能。
使用三种双重功能水泥（Allcem Core（FGM）、Rebilda DC（VOCO）和 LuxaCore Z（DMG））、一种粘固树脂水泥（Rely X ARC（3M ESPE））和一种 Core Buildup 复合树脂 GrandioSo（VOCO）。根据 ISO 4049:2009 评估弯曲强度（n=10）和膜厚（n=6）。根据 ISO 6876:2001 评估流动度（n=6）。聚合后即刻和 24 小时评估转化率（DC）（n=5）。为了进行脱位阻力（RD）分析，将牛牙制备用于接收纤维玻璃柱，并使用推出试验（n=12）。
与 GrandioSo 相比，Luxacore Z 的弯曲强度较低（p<0.001）。水泥的膜厚无统计学差异（p=0.66）。Allcem Core 的流动值降低（p=0.006）。不同水泥即时 DC 无统计学差异（p>0.05）。24 小时后，除 Luxacore Z 外（p=0.054），所有组的 DC 均增加。RD 与对照 Rely X ARC 无差异，与根的第三部分无关（p>0.05）。与冠部相比，Luxacore Z 在根尖部的平均 RD 值较低（p=0.046）。
双重功能水泥（Allcem Core 和 Rebilda DC）具有与粘固树脂水泥（RelyX ARC）和 Core Buildup 复合树脂（GrandioSo）相似的物理和机械性能。因此，它们可用于一次性桩核修复。
双重功能水泥可用于一次性桩核修复，因为它们具有与粘固树脂水泥和 Core Buildup 复合树脂相似的物理和机械性能。
