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Quintessence International
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Quintessence Int 22 (1991), No. 1     1. Jan. 1991
Quintessence Int 22 (1991), No. 1  (01.01.1991)

Page 41-45


Marginal leakage around V-shaped cavities restored with glass-ionomer cements: an in vitro study
Zyskind / Frenkel / Fuks / Hirschfeld
The object of this investigation was to assess the degree of marginal leakage around V-shaped cervical glass-ionomer cement restorations and compare it to that around composite resin restorations. Three different glass-ionomer cements and one composite resin control were assessed by means of dye penetration. Severe microleakage at the occlusal margins was found in 70% of the glass-ionomer cement restorations, but in only 10% of the composite resin restorations. A considerable amount of dye penetration was observed at the cervical margins of all restorations, including the controls. None of the glass-ionomer cements tested showed superiority in preventing marginal leakage occlusally or gingivally.