목적: Surgery is the primary treatment for oral cancer. If the patient's tumor is too large or deep, a skin flap reconstruction may be necessary to maintain aesthetics and head and neck function.Each skin flap reconstruction surgery takes approximately four to twelve hours, which is a significant strain on both the reconstructive surgeon's physical endurance and the patient's health. Reducing the duration of skin flap reconstruction would minimize the risks associated with prolonged anesthesia for patients. We know that power devices like Ligasure or Harmonic can cut tissue more quickly and with less damage. Therefore, we want to investigate the impact of power instruments on free flaps and determine whether they can significantly reduce the duration of skin flap reconstruction. 방법:We will extract data from the electronic medical records database of Changhua Christian Hospital, selecting oral cancer patients who underwent free flap reconstruction between 2020 and 2021. We will divide the patients into two groups: one group will consist of patients who received traditional electrocautery, and the other group will consist of patients who received power instruments such as Ligasure or Harmonic.Finally, we will perform a logistic regression analysis on the data from the two groups to compare their differences. 결과:A total of 56 patients were included in the study. The majority were male, and the average age was 55.3 years in the power device group and 56.6 years in the electrosurgery group. In the electrosurgery group, there were two flap failures, and one patient experienced bleeding at the donor site, which resolved with conservative treatment. The time from the start of flap harvest to vascular anastomosis was approximately 245 minutes. In contrast, the electrosurgery group was 302 minutes. There was no significant difference in the length of hospital stay between the two groups. 결론:Using power instruments can decrease operative time and reduce blood loss. If financially feasible for the patient, we strongly recommend using these instruments to benefit both the patient and the surgeon.