首页> 美国卫生研究院文献>Materials >Resistance to Fracture of Lithium Disilicate Feldspathic Restorations Manufactured Using a CAD/CAM System and Crystallized with Different Thermal Units and Programs
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Resistance to Fracture of Lithium Disilicate Feldspathic Restorations Manufactured Using a CAD/CAM System and Crystallized with Different Thermal Units and Programs

机译:使用CAD / CAM系统制造的锂静止硅酸锂性裂缝修复骨折的抗性并用不同的热单元和程序结晶

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摘要

The aim of this study was to determine the resistance to fracture of feldspathic restorations with lithium disilicate and crystallized with different ovens and programs. Methods: Sixty monolithic restorations (LD) (EMAX CAD™ LT, Ivoclar-Vivadent™) were designed with the same parameters and milled with a CAD/CAM system (CEREC SW 5.1, CEREC MCXL, Dentsply-Sirona™, Bensheim). Each restoration was randomly assigned by randomization software (RANDNUM) to one of the three groups: (a) (NF) Oven P310 (Ivoclar, Vivadent) normal crystallization program, (b) (FF) Ivoclar P310 oven (Ivoclar-Vivadent™) rapid crystallization program, or (c) (SF) SpeedFire oven (Dentsply-Sirona™). Results: There were statistically significant differences between the groups (ANOVA, p < 0.05). The NF and FF groups showed the highest values of resistance to fracture, with statistically significant differences with the SF group. Conclusions: Using a furnace from the same dental company with predetermined programs from the material manufacturer, as well as using a predetermined program for rapid crystallization, has no effect on fracture resistance, and would save clinical time when performing ceramic restorations with lithium disilicate, while keeping their mechanical properties.
机译:本研究的目的是确定与锂钠硅酸盐的骨密度修复骨折的抗性,并用不同的烤箱和程序结晶。方法:采用相同的参数(EMAX CAD™LT,IVOClar-Vivadent™,用CAD / CAM系统(CEREC SW 5.1,CEREC MCXL,Dentsply-Sirona™,Bensheim)设计了60个单片修复(Emax CAD™LT,IVOClar-Vivadent™)。每次恢复被随机化软件(Randnum)随机分配给三组中的一种:(a)(nf)oven p310(ivoclar,vivadent)正常结晶程序,(b)(ff)ivoclar p310烤箱(ivoclar-vivadent™)快速结晶程序,或(C)(SF)Speedfire烤箱(Dentsply-Sirona™)。结果:组之间存在统计学上显着的差异(ANOVA,P <0.05)。 NF和FF基团显示出对骨折的最高值,与SF组有统计学显着的差异。结论:使用来自同一牙齿公司的炉子从材料制造商预定的程序,以及使用用于快速结晶的规定的程序,对耐断裂性没有影响,并执行与焦硅酸锂陶瓷修复时将节省临床的时间,而保持其机械性能。

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