Effect of LED and halogen light curing on polymerization of resin-based composites
Effect of LED and halogen light curing on polymerization of resin-based composites
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DOI：
10.1111/j.1365-2842.2004.01399.x
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发表时间：
2005-02-01
影响因子：
2.9
通讯作者：
Kalayci, S
中科院分区：
文献类型：
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作者：
Bala, O;Ölmez, A;Kalayci, S
光固化单元（LCU）的质量对光聚合树脂基复合材料（RBC）的临床性能有很大影响。用于RBC材料聚合的常用单元是卤素LCU。然而，它们有一些缺点。新型470 nm波长的蓝光超亮发光二极管（LED LCU）的开发提供了标准卤素LCU的替代品。本研究的目的是比较LED LCU和卤素LCU对不同树脂复合材料[两种混合（Esthet-X，Filtek Z 250），四种可包装（Filtek P60，Prodigy Condensable，Surefil，Solitaire），一种基于ormocer的树脂复合材料（Admira）]的转化度（DC）的有效性。通过LED LCU和卤素LCU聚合的RBC的DC值分别在约61.1 +/-0.4至50.6 +/-0.6%和55.6 +/-0.7至47.4 +/-0.5%的范围内。除Surefil和Filtek Z 250外，LED LCU的红细胞DC均显著高于卤素LCU（P < 0.05）。Surefil和Filtek Z 250在LED LCU和卤素LCU之间的差异无统计学意义（P > 0.05）。结果，观察到研究中使用的LED LCU的性能在临床上是令人满意的，并且具有足够的辐照度以在2 mm深度处固化RBC（混合的、可包装的和基于ormocer的），固化时间为40秒。
The clinical performance of light polymerized resin-based composites (RBCs) is greatly influenced by the quality of the light curing unit (LCU). A commonly used unit for polymerization of RBC material is the halogen LCUs. However, they have some drawbacks. Development of new blue superbright light emitting diodes (LED LCU) of 470 nm wavelengths with high light irradiance offers an alternative to standard halogen LCU. The aim of this study is compared the effectiveness of LED LCU and halogen LCU on the degree of conversion (DC) of different resin composites [two hybrid (Esthet-X, Filtek Z 250), four packable (Filtek P60, Prodigy Condensable, Surefil, Solitaire), one ormocer-based resin composite (Admira)]. The DC values of RBCs polymerized by LED LCU and halogen LCU ranged approximately from 61.1 +/- 0.4 to 50.6 +/- 0.6% and from 55.6 +/- 0.7 to 47.4 +/- 0.5%, respectively. Significantly higher DC of RBCs except Surefil and Filtek Z 250 was obtained for LED LCU compared with halogen LCU (P < 0.05). Surefil and Filtek Z 250 exhibited no statistically significant difference values between LED LCU and halogen LCU (P > 0.05). As a result, it was observed that the performance of LED LCU used in the study was satisfactory clinically and had sufficient irradiance to polymerize RBCs (hybrid, packable and ormocer based) at 2 mm depth with a curing time of 40 s.