title: Direct surface pH determinations of setting cements.
abstract: Surface pH measurements were made over a 24-hour period for several luting cements and glass-ionomer lining and restorative materials. Of the luting cements, the water-mixed glass-ionomer cement, Ketac-Cem, had the lowest initial pH and the polycarboxylate, Durelon, had the highest. Three glass-ionomer lining materials showed differences in pH that increased over the entire test period. Two of the three visible-light-cured glass-ionomer liners evaluated showed similar pH values, while the third exhibited a considerably lower pH. The lower pH values found with the water-mixed glass-ionomer luting agent suggest that acidity may contribute to the posttreatment sensitivity associated with this material.
authors.affiliation: Department of Dental Materials, Indiana University School of Dentistry, Indianapolis 46202.
authors.forename: D G
authors.initials: DG
authors.lastname: Charlton
authors.forename: B K
authors.initials: BK
authors.lastname: Moore
authors.forename: M L
authors.initials: ML
authors.lastname: Swartz
mesh_terms: D001840:Dental Bonding / Q000379:methods*; D003736:Dental Cavity Lining; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D011076:Polycarboxylate Cement / Q000737:chemistry*; D013499:Surface Properties; D013997:Time Factors; D015036:Zinc Phosphate Cement / Q000737:chemistry*
chemical_list: D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; D015036:Zinc Phosphate Cement