The use of intermediary resins when bonding glass polyalkenoate (ionomer) cement to composite resin.
This study was designed to examine the effects of three different types of glass polyalkenoate lining cement combined with three different types of bonding resin and varying surface treatments on the seal between the lining cement and the composite resin as used in the so called 'laminate' technique. The seal was assessed using a radioisotope and autoradiographic technique. Results showed that all the cements behaved in a manner specific to them. The seal of all systems examined could be improved, or at least, not compromised, by modification of the surface of the cement prior to attachment of the resin. Only one type of intermediate resin gave a reliable seal when applied to an unmodified surface of any of the cements under investigation. It is concluded that all the glass polyalkenoate cements tested behave differently when used beneath composite resin. Recommendations about the laminate restoration technique must be related to the specific combinations of materials used.
Woolford
M J
MJ
Department of Conservative Dentistry, Dental School, University of Dundee, U.K.
Grieve
A R
AR
D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003763:Dental Leakage / Q000517:prevention & control; D005899:Glass Ionomer Cements / Q000737:chemistry*; D008422:Materials Testing; D013499:Surface Properties
D003188:Composite Resins; D005899:Glass Ionomer Cements