title: The erosion kinetics of conventional and resin-modified glass-ionomer luting cements in acidic buffer solutions.
abstract: This study investigated the erosion kinetics of conventional and resin-modified glass-ionomer luting cements in acidic buffer solutions as a function of time. Disc shaped specimens were prepared from conventional (Ketac-Cem: KTC) and resin-modified glass ionomer cements (Fuji Plus: FP) and immersed in three acidic buffer solutions (0.01 M) namely, acetic acid/sodium acetate (AA(B)), lactic acid/sodium lactate (LA(B)) and citric acid/sodium citrate (CA(B)) with a constant pH of 4.1 and stored for 1, 8, 24, 48, 80, 120 and 168 h. F concentration was determined using ion-specific electrode. Si, Ca and Al concentrations were determined by atomic absorption spectroscopy. Ca, Al, Si and F solubility rates in both FP and KTC were the highest in CA(B) solution. The erosion rates of both FP and KTC in all buffer solutions increased as a function of immersion time. The amount of F eluted from FP was more than that of KTC. The total amount of elements released from FP was less than KTC in all solutions.
authors.affiliation: Yıldız Technical University, The Institute of Science, Division of Bioengineering, Davutpasa Campus, Esenler, 34210 İstanbul, Turkey.
authors.forename: Binnaz
authors.initials: B
authors.lastname: Hazar-Yoruc
authors.forename: Andac Barkin
authors.initials: AB
authors.lastname: Bavbek
authors.forename: Mutlu
authors.initials: M
authors.lastname: Özcan
mesh_terms: D019342:Acetic Acid; D000535:Aluminum / Q000032:analysis; D002021:Buffers; D002118:Calcium / Q000032:analysis; D019343:Citric Acid; D005459:Fluorides / Q000032:analysis; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D017736:Ion-Selective Electrodes; D007700:Kinetics; D019344:Lactic Acid; D008277:Magnesium Oxide / Q000737:chemistry; D011076:Polycarboxylate Cement / Q000737:chemistry; D012117:Resins, Synthetic; D012825:Silicon / Q000032:analysis; D012995:Solubility; D013997:Time Factors; D015034:Zinc Oxide / Q000737:chemistry
chemical_list: D002021:Buffers; C113301:FujiPlus; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; D012117:Resins, Synthetic; D019343:Citric Acid; D019344:Lactic Acid; D008277:Magnesium Oxide; C040235:Ketac-cem; D000535:Aluminum; D019342:Acetic Acid; D005459:Fluorides; D015034:Zinc Oxide; D002118:Calcium; D012825:Silicon