To evaluate the clinical efficacy of moldable splint containing silicone gel in the prevention and management of scars.

A total of 34 patients with post-burn or post-traumatic hypertrophic scars （HS） admitted to the Department of Burns and Wound Repair Surgery of the First Affiliated Hospital of Anhui Medical University from June 2022 to March 2025 were selected for retrospective analysis of their clinical data. Based on different treatment methods， the patients were divided into an observation group （19 cases） and a control group （15 cases）. Patients in the observation group received treatment with moldable splint containing silicone gel， while patients in the control group received treatment with conventional splint. After 6 months of treatment, scar thickness， color， flexibility， and vascularity were evaluated， and scar outcomes were compared using the Vancouver scar scale （VSS） score and the patient and observer scar assessment scale （POSAS） score. The incidence of adverse reactions during treatment was recorded for both groups.

After 6 months of treatment， the observation group showed better outcomes than the control group in terms of scar color （1.11±0.57 vs. 2.00±0.76， t=-3.946， P<0.001）， thickness （0.89±0.66 vs. 2.33±0.62， t=-6.504， P<0.001）， vascularity （0.79±0.25 vs. 1.60±0.74， t=-4.486，P<0.001）， pliability （1.05±0.52 vs. 1.73±0.59， t=-3.547，P=0.001）， VSS score （3.47±1.54 vs. 7.67±1.29， t=-8.448， P<0.001）， and POSAS score （23.58±4.76 vs. 37.33±7.17， t=-6.399， P<0.001）. There was no statistically significant difference in the incidence of adverse reactions between the observation group and the control group （15.8% vs. 20.0%， P>0.05）.

Silicone gel-containing moldable splint is effective in the treatment of post-burn or post-traumatic hypertrophic scars and significantly inhibits scar hypertrophy.