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document
Secondary caries formation in vitro around glass ionomer-lined amalgam and composite restorations . The aim of this in vitro secondary caries study was to examine the glass-ionomer liner 's effect on wall-lesion inhibition when a conventional and a light-cured glass ionomer liner was placed under amalgam and composite resin restorations . Class V preparations in extracted upper premolars were used and ten restorations were used for each of the following groups : ( i ) two layers of copal varnish and amalgam ; ( ii ) conventional glass-ionomer and amalgam ; ( iii ) light-cured glass-ionomer and amalgam ; ( iv ) bonding agent and light-cured composite resin ; ( v ) conventional glass-ionomer , bonding agent and light-cured composite resin ; ( vi ) light-cured glass-ionomer , extended 0.3 mm short of the enamel margin bonding agent and light-cured composite resin ; and ( vii ) light-cured glass-ionomer , extended 1 mm short of the enamel margin , bonding agent and light-cured composite resin . The teeth were thermocycled and artificial caries were created using an acid-gel . The results of this study showed that artificial recurrent caries can be reduced significantly ( P < 0.05 ) with a glass-ionomer liner under amalgam restorations . The results also showed that when the light-cured glass-ionomer liner was placed 0.3 mm from the cavosurface margin under composite resin restoration , the artificial recurrent caries reduced significantly ( P < 0.05 ) .
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Intervention_Surgical
glass-ionomer liner 's
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Intervention_Surgical
glass ionomer liner
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Intervention_Surgical
artificial caries
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Intervention_Surgical
glass-ionomer liner under amalgam restorations .
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Intervention_Surgical
glass-ionomer
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Outcome_Physical
artificial recurrent caries
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Outcome_Physical
artificial recurrent caries reduced