Addition Silicone Ad-Sil Acura Soft Putty is used during bridge and crown prosthesis method. This putty requires 30 seconds to mix and 1 minute 20 second to insert in mouth. Addition Silicone Ad-Sil Acura Soft Putty takes 2 minutes 45 seconds to set. It needs to be mixed with washed material in equal quantity. It needs to be kneaded with fingers and the wash material should be blended with it by a spatula. Long storage life and accurate formulation are its key aspects.