Improvement and clinical effect of labial depilation with 810 nm semiconductor laser
10.3760/cma.j.cn114453-20191028-00320
- VernacularTitle:810 nm半导体激光唇部脱毛的改进及临床效果
- Author:
Huihua ZHANG
1
;
Hui QU
;
Shixin YANG
;
Hongmei XU
;
Min CAO
;
Xiaoying LIANG
Author Information
1. 山西医学科学院山西白求恩医院医疗美容科烧伤整形外科，太原 030009
- Keywords:
Hair removal;
Lasers, semiconductor;
Lip;
High-energy
- From:
Chinese Journal of Plastic Surgery
2020;36(11):1264-1269
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the improvement and clinical effect of lip depilation with 810 nm semiconductor laser.Methods:Retrospective analysis was performed on female labial hair removal patients admitted to Bethune Hospital in Shanxi from January 2017 to October 2018. The patients who visited the clinic from January 2018 to October 2018 were taken as the experimental group, and those who visited the clinic from January 2017 to December 2017 were taken as the control group. A combination model of super hair removal(SHR) + hair removal(HR) was adopted to perform the treatment with 810 nm YfTON semiconductor freezing point laser hair removal. The experimental group was treated with surface anesthetic and SHR mode dumbbell sliding mode 8 J/cm 2+ HR mode with high energy (starting from the upper limit of reference energy value), and the patients were treated with local drum and chin coordination. In the control group, no surface anesthetic was applied, and SHR mode was used for linear round-trip sliding + HR mode for reference energy treatment. After the third and fifth treatment, the patients in the two groups were treated with a hair size of 1 cm×1 cm on one side of the mouth corner with heavy hair. A hair analyzer was used to count the number of similar hairs visible to the naked eye at a social distance of about 1 meter. The final hair removal rate was calculated as excellent (70%-90%, including 70%), as improvement (40%-70%, including 40%), as invalid (<40%). The depilation rate after 3 and 5 treatments was compared between the 2 groups, the number of treatments was analyzed, and the recurrence rate and comfort level of the patients were followed up 6 months after treatment. Wilcoxon rank sum test was used to compare the measurement data. Comparison of counting data was tested, and P<0.05 was considered statistically significant. Results:A total of 200 patients were included in this study, including 100 in the experimental group, with an age of (28.58±6.01) years. The control group included 100 patients (28.57±6.07) years old. The skin type of patients was performed according to Fitzpatrick and Chinese characteristics Ⅱ-Ⅳ. After statistical test, there were no statistically significant differences in age and skin type between the two groups. After half a year of follow-up, the average number of treatment times in the experimental group was 5(5, 6) times, lower than that in the control group 7(6, 8) times( T=-9.279, P<0.001). The three and five depilation rates of the experimental group were[70.0%(68.0%, 74.8%), 86.0%(83.0%, 88.0%)], and the final depilation rates of the experimental group were 89.0%(86.7%, 90.0%), all higher than those in the control group[40.0%(37.0%, 42.0%), 72.0%(70.0%, 74.0%), 86.5%(85.0%, 88.0%)]. The differences between the two groups were statistically significant ( T3=43.986, T5=25.151, Tfinal=5.547, all P< 0.001). The intermittent times of single sliding treatment in the experimental group ≤2 times, compared with the control group > 2 times, the comfort level was improved. No blisters or coloration occurred in any of the patients. Patients in the 2 groups were followed up for half a year after the last hair removal. In the 2 groups, there were sparse new fine hairs and soft hair growth that were not included in the hair count, and the included hairs were thinner than those before the treatment. Conclusions:Compared with the control group, the treatment cycle is shorter, the efficiency is higher and the comfort level of the patients is higher in the experimental group.
