Effect of Curing Modes on Depth-of-Cure in Bulk-Fill Composite
Effect of Curing Modes on Depth-of-Cure in Bulk-Fill Composite
复制标题
固化模式对散装填充复合材料固化深度的影响
DOI：
10.1016/j.identj.2021.08.022
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发表时间：
2021
影响因子：
3.3
通讯作者：
Robia Ghafoor
中科院分区：
文献类型：
--
作者：
Zainab Haji;Robia Ghafoor
目的或目的LED单元有不同的固化方式，不同的固化强度会影响复合修复材料的聚合。与传统复合材料相比，散体填充复合材料具有更高的固化深度。然而，关于他们的成功，他们有相互矛盾的报道。因此，本研究的目的是探索在块状充填修复材料中能够实现最大深度固化的固化模式。材料和方法在预成型的特氟龙模架中，采用3种模式中的一种：组1恒定模式、组2脉冲模式和组3斜坡模式，在预成型的特氟龙模架上进行聚合，制备了33个长8 mm、直径4 mm的圆柱形复合材料试件。一旦聚合，每个样品都从模具中挤出，并使用ISO 4049报废方法，移除未固化的树脂。用游标卡尺测量样品长度。每个样品测量三次，取平均值作为固化深度。结果脉冲、恒定和倾斜三种模式对SDR BulkFill复合材料的固化深度分别为2.88±0.27 mm、2.92±0.29 mm和3.18±0.26 mm。脉冲固化模式与倾斜固化模式固化深度差异有统计学意义(p值=0.04)。结论SDR批量填充复合材料固化深度最大的是LED单元的倾斜固化模式，其次是恒定模式和脉冲模式。
Aim or PurposeLED unit has different curing modes with variable intensities that influence polymerization of composite restorative material. Bulk-Fill composites claim more depth of cure compared to conventional composites. However, they have conflicting reports on their success. Hence, the purpose of this study is to explore the curing mode that could result in maximum depth cure in Bulk Fill restorative material.Materials and MethodsThirty-three cylindrical composite specimens with dimension of 8mm length and 4mm diameter were made in preformed Teflon mold/frame by polymerization with LED using one of the three modes: Group1 constant mode; Group 2 pulse and Group 3 ramped mode. Once polymerized, each specimen was extruded from the mould and using the ISO 4049 scrapping method, uncured resin was removed. Specimen lengths were measured with a Vernier calliper. Each specimen was measured thrice and the mean was taken for the depth-of-cure. The data was subjected to ANOVA and Tukey's post hoc analysis.ResultsThe pulse, constant and ramped modes resulted in depth of cure of SDR BulkFill composite of 2.88 ± 0.27mm, 2.92 ± 0.29mm and 3.18 ± 0.26mm, respectively. The difference in depth of cure between pulse and ramped curing mode was statistically significant on post-hoc analysis (p-value=0.04).ConclusionMaximum depth of cure of SDR BulkFill composite was achieved by ramped cure mode of LED unit followed by Constant and Pulse modes.