Creep in amalgam class V restorations.
The purpose of the investigation was to examine the creep rate in an amalgam Class V restoration. The stresses in a central bucco-lingual plane of a loaded bicuspid with a Class V restoration were computed with aid of the finite element method. When the stresses were known, the creep rate was calculated. The results showed that the creep rate of a load of 150 N varied between 0.6% and 3.5% per 104 s for amalgams with large differences between their viscoelastic behaviors. A gap between the restoration and the cavity margin will thus occur if a tooth is often heavily loaded.
D001641:Bicuspid; D003723:Dental Amalgam; D003793:Dental Restoration, Permanent / Q000592:standards*; D003799:Dental Stress Analysis / Q000379:methods; D006801:Humans; D008433:Mathematics
D003723:Dental Amalgam