title: Creep and hardness testing of some denture base polymers.
abstract: A method of measuring creep, recovery, hardness, and the effect of cyclic loading on denture base polymers using a modified Wallace hardness tester is described. This apparatus is particularly sensitive and is capable of detecting very small variations in these properties of the materials. A representative group of denture base polymers that include heat-cured, pour-type, and other modified materials was tested. The results obtained are in good agreement with those shown by other workers.
mesh_terms: D003819:Denture Bases; D004548:Elasticity; D006244:Hardness; D006245:Hardness Tests / Q000295:instrumentation; D008689:Methacrylates; D011108:Polymers; D012408:Rubber; D013499:Surface Properties; D014783:Viscosity
chemical_list: D008689:Methacrylates; D011108:Polymers; D012408:Rubber