Study	Subgroups reported	Mean time to healing
Adhya 2015	20%‐40% superficial 20%‐40% deep dermal 40%‐60% superficial 40%‐60% deep dermal	Silver: 15.7 (4.14) N = 15; SSD: 20.5 (8.75) N = 17 Silver: 38.6 (11.26) N = 17; SSD: 48.4 (14.11) N = 13 Silver: 26.0 (6.22) N = 6; SSD: 28.1 (12.76) N = 10 Silver: 45.4 (11.35); SSD: 58.9 (18.18) N = 14
Chen 2006	Superficial Deep	Silver 9.6 (± 1.6) (N = 31); SSD 19.1 (± 2.6) (N = 33); Vaseline 13.5 (± 0.9) N = 32) Silver 19.1 (± 2.6) (N = 34); SSD 21.6 (± 2.9) (N = 30); Vaseline 22.7(± 2.9) (N = 31)
Gong 2009	Superficial degree II Deep degree II	Silver 9.8 (± 2.1); SSD 13.7 (± 2.8) (N = 28 in both groups) Silver 16.4 (± 2.8); SSD 20.9 (± 3.6) (N = 24 in both groups)
Li 2006	Superficial Deep Residual	Iodine 9.6 (2.4) (N = 16); carbon 7.4 (2.1) (N = 46) Iodine 19.6 (3.4) (N =32); carbon 16.2 (2.6) (N =89) Iodine 28.8 (10.4) (N =26); carbon 19.4 (6.2) (N = 68)
Liao 2006	Superficial Deep	N = 80: silver 9.5 (± 2.7); SSD 10.8 (± 3.4) N = 40: silver 21.5 (± 4.8); SSD 23.3 (± 6.4)