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An in vitro microleakage study of the ‘bonded‐base’ restorative technique
Author(s) -
YAP A. U. J.,
MOK B. Y. Y.,
PEARSON G.
Publication year - 1997
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1997.tb00318.x
Subject(s) - materials science , adhesive , composite number , leakage (economics) , glass ionomer cement , composite material , enamel paint , dentistry , temperature cycling , thermal , medicine , physics , layer (electronics) , meteorology , economics , macroeconomics
summary Microleakage associated with a silver‐reinforced restorative glass–ionomer cement (Hi‐Dense) used with a composite resin (Z100) in a modified Class II bonded‐base technique restoration was evaluated. The influence of long‐term artificial saliva storage, thermal and load cycling was also determined. Class II composite (Z100) restorations used with a new dental adhesive system (Scotchbond Multi‐Purpose Dental Adhesive®) were used as controls. Results showed that the bonded‐base technique can reduce the leakage observed with the direct composite technique. Thermocycling decreased the leakage at the composite–enamel interface but had no effect on the leakage at the composite–dentine interface or on the leakage patterns of bonded‐base restorations. Load cycling had no significant influence on leakage patterns of either type of restorative mode. Storage in artificial saliva resulted in decreased leakage at the composite‐enamel interface but had a minor adverse effect at the glass–ionomer–dentine interface.