The mechanism for erosion of glass-ionomer cements in organic-acid buffer solutions.
The behavior and mechanism for erosion of glass-ionomer cements in organic-acid buffer solutions were studied as a function of time, pH, and citric-acid concentration. In acidic solutions, the dissolution of the cement was controlled by the diffusion of the eluted species in the cement matrix, which depended on H+ ion concentration. In citric-acid solutions, the dissolution of the cement was controlled by both the diffusion and the surface reaction between the acid anion and the eluted species. Contribution of the latter reaction was larger with the increase in the acid concentration.
Fukazawa
M
M
Second Department of Conservative Dentistry, Faculty of Dentistry, Kyusyu University, Fukuoka, Japan.
Matsuya
S
S
Yamane
M
M
D000085:Acetates; D019342:Acetic Acid; D002951:Citrates; D019343:Citric Acid; D003738:Dental Cements; D005899:Glass Ionomer Cements; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007773:Lactates; D019344:Lactic Acid; D012995:Solubility; D013997:Time Factors
D000085:Acetates; D002951:Citrates; D003738:Dental Cements; D005899:Glass Ionomer Cements; D007773:Lactates; D019343:Citric Acid; D019344:Lactic Acid; D019342:Acetic Acid