title: The surface pH of glass ionomer cavity lining agents.
abstract: It is considered that acid release from the surface of glass ionomer (polyalkenoate) cements may be associated with early pulpal sensitivity following the use of these materials. This study was carried out to examine the surface pH of different types of glass ionomer lining cements using a flat-ended pH electrode. It was found that the surface pH remains low for this group of materials during the first hour of setting. Different types of glass ionomer lining cement were also shown to behave differently when considering acid release from the surface. Conclusions regarding the behaviour of glass ionomers should only be made with reference to the specific material tested.
authors.forename: M J
authors.initials: MJ
authors.lastname: Woolford
mesh_terms: D000538:Aluminum Silicates; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003736:Dental Cavity Lining; D003738:Dental Cements; D005899:Glass Ionomer Cements; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D013499:Surface Properties; D013997:Time Factors
chemical_list: D000538:Aluminum Silicates; D003738:Dental Cements; D005899:Glass Ionomer Cements; C061499:Ketac-Bond; C049037:aluminosilicate