Objective　To explore the application effect of 3D printing technology in personalized customization of neck functional stents for scar patients. Methods　Fifty patients who underwent neck scar treatment in our hospital from March 2021 to August 2021 were selected and randomly divided into two groups according to the random number table method. On the basis of conventional anti-scar drug treatment, the control group was treated with a conventional size neck brace for pressure treatment, andthe observation group was treated with a personalized neck functional stent made by 3D printing technology for pressure treatment.

The patients were followed up for 12 months and assessed by the Vancouver Scar Scale (VSS) and the Patient and Observer Scar

Assessment Scale (POSAS). Results　A total of 43 patients completed the whole course of treatment. The time for the observation group to reach the target pressure value was significantly shorter than the control group (P<0.05); All indicators of VSS scores

were better than the control group (P<0.05); Multiple indicators of POSAS scores were better than the control group (P<0.05).

Conclusion　Implementing 3D printing technology to customize personalized functional stents for neck scar patients is beneficial

for maintaining stable pressure treatment effects and improving scar treatment efficacy

　Neck scar, 　Scar hyperplasia, 　3D printing technology, 　Functional stents, 　Stress therapy, 　Rehabilitation therapy