title: Measurement of the viscosity of irreversible hydrocolloids.
abstract: Three techniques have been used to assess the shear rate dependence of the viscosity of mixed alginate impression materials prior to setting. Two methods used a cone-plate viscometer, and one method was a capillary extrusion technique. Data from the three sets of experiments have been critically compared. It has been shown that an unset alginate material exhibits Bingham behaviour.
authors.affiliation: Department of Restorative Dentistry, University of Manchester Dental Hospital, UK.
authors.forename: T M
authors.initials: TM
authors.lastname: Wanis
authors.forename: E C
authors.initials: EC
authors.lastname: Combe
authors.forename: A A
authors.initials: AA
authors.lastname: Grant
mesh_terms: D000464:Alginates / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry; D003760:Dental Impression Materials / Q000737:chemistry*; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D008422:Materials Testing / Q000295:instrumentation; D012212:Rheology; D012399:Rotation; D013314:Stress, Mechanical; D014783:Viscosity
chemical_list: D000464:Alginates; D003102:Colloids; D003760:Dental Impression Materials; D006603:Hexuronic Acids; D020723:Glucuronic Acid