In vitro Fluoride Uptake by Intra–Orally Aged and Contaminated Glass Ionomer Cement

• Published in: Caries research Vol. 33; no. 1; pp. 88 - 90
• Main Authors: Damen, J.J.M., Buijs, M.J., van Strijp, A.J.P., ten Cate, J.M.
• Format: Journal Article
• Language: English
• Published: Basel, Switzerland 01.01.1999
• Subjects: Adsorption; Aged; Cariostatic Agents - chemistry; Chemical Phenomena; Chemistry, Physical; Dental Plaque - metabolism; Dental Plaque - physiopathology; Dentistry; Diffusion; Fluorides - chemistry; Glass Ionomer Cements - chemistry; Humans; Middle Aged; Saliva - chemistry; Saliva - physiology; Short Communication; Sodium Fluoride - chemistry; Surface Properties; Time Factors; Fluoride uptake; Glass ionomer cement; Plaque; Fluoride release
• ISSN: 0008-6568; 1421-976X
• DOI: 10.1159/000016500

Sustained release of fluoride is one of the properties of glass ionomer cement which contribute to its popularity as a restorative material. Part of the released fluoride is assumed to be delivered directly at the sites at risk, e.g., the margin of the restoration where plaque is retained and secondary caries may develop. An increasing number of reports describe the inhibition of demineralization or enhanced lesion remineralization around glass ionomer cement in artificial systems in vitro. In situ studies have shown that artificial dentinal lesions adjacent to glass ionomer are rapidly remineralized whereas control lesions adjacent to amalgam fillings demineralized further. Evaluations of the clinical performance of glass ionomer restorations have led to conflicting results: There is some evidence for a reduced caries risk in the tissues adjacent to glass ionomer restorations, but in a recent survey on the longevity of restorations of various types, it was found that 50% of the replacements of glass ionomer restorations were because of diagnosed secondary caries.