目的 观察瘢痕内分离术联合二氧化碳点阵激光治疗面部凹陷性瘢痕对色素沉着、瘢痕面积的改善作用。方法 回顾性分析2020年11月—2023年9月期间收治的76例面部凹陷性瘢痕患者临床资料,根据治疗方式不同分为对照组和观察组,每组各38例。对照组采用二氧化碳点阵激光治疗,观察组采用瘢痕内分离术联合二氧化碳点阵激光治疗,对比两组患者治疗前后的色素沉着、瘢痕面积,并对比两组患者并发症发生情况。结果 治疗后,观察组的色素沉着、瘢痕面积小于对照组（P<0.05）;两组患者并发症发生率差异不具有统计学意义（P>0.05）。结论 瘢痕内分离术联合二氧化碳点阵激光治疗面部凹陷性瘢痕效果良好,优于单纯二氧化碳点阵激光治疗,可显著缩小患者面部色素沉着、瘢痕面积,并且未明显增加并发症发生率。

Objective To observe the improvement effect of intralesional separation combined with carbon dioxide lattice laser on pigmentation and scar area in the treatment of facial depressed scars. Methods The clinical data of 76 patients with facial depressed scars from November 2020 to September 2023 were retrospectively analyzed. They were divided into a control group and an observation group with 38 cases in each group. The patients in the control group were treated with carbon dioxide lattice laser, while the patients in the observation group were treated with intra-scar separation combined with carbon dioxide lattice laser. The before-and-after pigmentation and scar area and incidence of complications of the two groups were compared. Results After treatment, the pigmentation and scar area of the observation group were smaller than those of the control group （P<0.05）; the difference in the incidence of complications between the two groups was not statistically significant （P>0.05）. Conclusion Intralesional separation combined with carbon dioxide lattice laser has a good effect in the treatment of facial depressed scars, which is superior to the treatment with carbon dioxide lattice laser alone. It can significantly reduce the facial pigmentation and scar area of patients, and does not significantly increase the incidence of complications.