title: The influence of using vacuum-dried poly(alkenoic) acids upon the physical properties of a glass polyalkenoate (ionomer) cement.
abstract: Some of the physical characteristics of two glass polyalkenoate cements have been measured. The two cements differ in terms of the presentation of the poly(alkenoic) acid used to form the cement and in the method of mixing of the materials. The 'conventional' cement uses an aqueous solution of poly(acid) and is an encapsulated mechanically mixed material. The alternative material contains a vacuum-dried poly(acid) powder with the ion-leachable glass, and is mixed by hand with a 15 per cent aqueous solution of tartaric acid. There were some minor differences between the two products, including a delay in the onset of the setting reaction for the material containing the vacuum-dried poly(acid) powder. These differences would probably have little significant effect upon the clinical performance of the materials.
authors.forename: A W
authors.initials: AW
authors.lastname: Walls
authors.forename: J F
authors.initials: JF
authors.lastname: McCabe
authors.forename: J J
authors.initials: JJ
authors.lastname: Murray
mesh_terms: D002264:Carboxylic Acids; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D001840:Dental Bonding; D003738:Dental Cements; D005899:Glass Ionomer Cements; D008298:Maleates; D008422:Materials Testing; D011076:Polycarboxylate Cement; D013314:Stress, Mechanical; D013718:Tensile Strength; D014618:Vacuum
chemical_list: D002264:Carboxylic Acids; D003738:Dental Cements; D005899:Glass Ionomer Cements; D008298:Maleates; D011076:Polycarboxylate Cement; C040964:Ketac-Fil; C045752:chelon