Baek WY, et al. – The effect of light–emitting diode (LED) (590/830 nm)-based low–level laser therapy (LLLT) was examined in posttraumatic edema in facial bone fracture patients. LED–based LLLT was popular for its cost–effectiveness and large coverage area compared to traditional laser therapy. Findings supported its effectiveness in various areas such as wound healing, skin rejuvenation, and pain alleviation. Hence, LED–based LLLT was an effective option for reducing posttraumatic edema.