Blue diode lasers are alternative curing devices for dental composites. The aim of this study was to investigate the influence of blue diode laser polymerization on shear bond strength of bulk fill composites to human dentin and temperature rise during two types of polymerization. Composite cylinders of SDR Plus(SDR) and Ever X Flow(EX) were bonded to dentin slabs using Adhese Universal and curing devices blue diode laser (449 nm, 1.6 W) and Power Cure LED. For each material and curing device there were two polymerization approaches: 1)conventional: separate curing of adhesive; 2)co-curing: simultaneous adhesive and composite curing. Polymerization modes for each material in conventional and co-curing(c) approach were: blue laser 2000 mW/cm² for 5 s (L5 and L5c); blue laser 1000 mW/cm² for 10 s (L10 and L10c); Power Cure 2000 mW/cm² for 5 s (LED5 and LED5c); Power Cure 1000 mW/cm² for 10 s (LED10 and LED10c). Temeperature was measured using thermal vision camera. For SDR, the highest bond strength was 24.3 MPa in L10c, and the lowest 9.2 MPa in LED5c. EX exhibited the highest bond strength(21.3 MPa) in LED5, and the lowest in L5(7.7 MPa). The highest temperature rise for SDR was in L10 and L5 (7.3 and 7.2 °C), and the lowest in LED5(0.8 °C). For EX, the highest temperature rise was in L5 (13.0 °C), and the lowest in LED5 (0.7 °C). Temperature rise was higher during blue laser polymerization, especially at high intensity and with conventional curing. Preferable blue laser curing mode is co-curing at 1000mW/cm² for 10 s.

蓝色二极管激光器是牙科复合材料的替代固化设备。本研究的目的是研究蓝色二极管激光聚合对散装填充复合材料与人体牙本质的剪切粘合强度以及两种聚合过程中温升的影响。使用 Adhese Universal 和固化设备蓝色二极管激光（449 nm，1.6 W）和 Power Cure LED 将 SDR Plus（SDR）和 Ever X Flow（EX）的复合圆柱体粘合到牙本质板。对于每种材料和固化装置，有两种聚合方法： 1）常规：粘合剂单独固化； 2）共固化：粘合与复合同时固化。传统方法和共固化(c)方法中每种材料的聚合模式为：蓝色激光2000 mW/cm ²持续5秒（L5和L5c）；蓝色激光 1000 mW/cm ²持续 10 秒（L10 和 L10c）；功率固化 2000 mW/cm ²持续 5 秒（LED5 和 LED5c）；功率固化 1000 mW/cm ²持续 10 秒（LED10 和 LED10c）。使用热视觉相机测量温度。对于SDR，L10c 的结合强度最高为24.3 MPa，LED5c 的结合强度最低为9.2 MPa。 EX在LED5中表现出最高的结合强度（21.3MPa），在L5中表现出最低（7.7MPa）。 SDR 的温升最高的是 L10 和 L5（7.3 和 7.2 °C），LED5 的温升最低（0.8 °C）。对于 EX，L5 的温升最高（13.0 °C），LED5 的温升最低（0.7 °C）。蓝色激光聚合过程中的温升较高，尤其是在高强度和传统固化的情况下。优选的蓝色激光固化模式是在1000mW/cm ²下共固化10秒。