Solubility of a resin-modified glass ionomer cement.
Thirty standardized discs were fabricated from a resin-modified glass ionomer cement (Vitremer -3M) using three different powder/liquid ratios. All specimens were immediately weighed. Specimens were stored in artificial saliva for thirty days. Twice each day the specimens received a 30-min. artificial caries challenge (pH 4.4) and were returned to artificial saliva. At the end of the thirty-day experimental period, the specimens were dried and weighed again. Duncan's Multiple Range Test indicated that the 145 mg powder/35 mg liquid ratio had significantly less weight loss than the 145 mg powder/105 mg liquid ratio (p < 0.05). The results appear to demonstrate that solubility decreases as the aluminosilicate glass powder increases.
Quackenbush
B M
BM
Dows Institute for Dental Research, College of Dentistry, University of Iowa, Iowa City 52242, USA.
Donly
K J
KJ
Croll
T P
TP
D000180:Acrylic Resins / Q000737:chemistry; D000538:Aluminum Silicates / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D003731:Dental Caries / Q000503:physiopathology; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D019279:Resin Cements / Q000737:chemistry*; D012464:Saliva, Artificial / Q000737:chemistry; D012995:Solubility; D013997:Time Factors
D000180:Acrylic Resins; D000538:Aluminum Silicates; D003188:Composite Resins; D005899:Glass Ionomer Cements; D019279:Resin Cements; D012464:Saliva, Artificial; C084550:Vitremer; C006903:carbopol 940