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首页> 外文期刊>Dental Materials Journal >Effect of high-irradiance light curing on exposure times and pulpal temperature of adequately polymerized composite
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Effect of high-irradiance light curing on exposure times and pulpal temperature of adequately polymerized composite

机译：高辐照光固化对充分聚合复合材料的曝光时间和润浆性温度的影响

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摘要

This study investigated the effect of high-irradiance light-curing on exposure time and pulpal temperature of adequately-cured composite. Composite placed in a molar preparation was cured using high-irradiance light-curing units (Flashmax P3, Valo, S.P.E.C. 3 LED, Cybird XD) and tested for hardness occlusal-gingivally. The first group had exposure times set according to manufacturer settings (recommended), second group to yield 80% of maximum hardness at the 2 mm depth (experimental), and third group was set at 20 s (extended). Exposure time necessary to adequately polymerize the composite at 2 mm depth was 9 s for the Cybird XD and Valo and 12 s for S.P.E.C. 3 LED and Flashmax P3. None of the high-irradiance light-curing units adequately polymerized the composite at the manufacturer-recommended minimum-exposure times of 1–3 s. Exposure times necessary to adequately polymerize composite at 2 mm resulted in a maximum pulpal-temperature increase well below the temperature associated with possible pulpal necrosis.
机译：本研究研究了高辐照度光固化对充足固化复合材料的暴露时间和润浆性温度的影响。使用高辐照度光固化单元（Flashmax P3，Valo，S.P.E.C.C.3 LED，Cybird XD）和硬度进行固化，将复合材料进行固化，并对硬度咬合而进行测试。第一个组根据制造商设置（推荐）设置的曝光时间（推荐），第二组在2 mm深度（实验）中产生80％的最大硬度，第三组设定为20 s（延长）。用于在2mm深度为Cybird XD和Valo和12s的Cybird XD和valo和12s所需的暴露时间为S.P.E.C。 3 LED和Flashmax P3。没有高辐照度光固化单元在制造商推荐的最小暴露时间为1-3秒的含量充分聚合复合材料。在2mm下充分聚合复合材料所需的暴露时间导致最大粉状温度升高，低于与可能的牙髓坏死相关的温度。

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