9048
document
Effect of four intermediate layer treatments on microleakage of Class II composite restorations . This in vitro study examines the marginal sealing ability of four different intermediate materials applied before placement of a condensable composite . Class II preparations were made with gingival margins placed 1.0 mm apical to the cementoenamel junction of 60 extracted teeth , randomly assigned to five groups of 12 . Following restoration , teeth were thermocycled , soaked in 0.5 % basic fuchsin , and sectioned longitudinally . The resin-modified glass ionomer cement demonstrated significantly less microleakage than the use of a dentin bonding agent alone or in combination with flowable composite , flowable compomer , or autoploymerizing composite ( p < 0.05 , Dunn 's test ) . This study supports the use of the glass ionomer open sandwich technique in deep Class II direct composite restorations .
9049
Intervention_Physical
four intermediate layer treatments
9050
Intervention_Physical
four different intermediate materials
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Intervention_Physical
condensable composite
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Intervention_Physical
fuchsin
9053
Intervention_Pharmacological
resin-modified glass ionomer cement
9054
Intervention_Pharmacological
dentin bonding agent
9055
Intervention_Physical
combination with
9056
Intervention_Pharmacological
flowable composite
9057
Intervention_Physical
glass ionomer open sandwich technique
9058
Outcome_Physical
less microleakage
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Participant_Condition
microleakage of Class II composite restorations
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Participant_Sample-size
60
9061
Participant_Condition
extracted teeth
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Participant_Condition
deep Class II direct composite restorations