Abstract
Inlay restoration has an inherent drawback in pulp protection under temporary restoration.Leaky sealing may result in bacterial contamination of the cavity, possibly leading to pulpirritation.Liner Bond System(Kuraray)is unique in producing tight sealing film on the dentin surface with an adhesive bonding resin and a low viscosity composite, Protect Liner.It enables us to cover the prepared surface immediately after preparation to minimize further irritation to the pulp from mechanical, thermal, and bacterial insults during impression taking and temporary sealing.This study investigated the effect of five temporary filling materials on the adhesion of a luting composite to the liner.Cavit-G(ESPE), a water setting material, significantly increased tensile bond strength of the luting composite to the liner.Neither eugenol or non-eugenol materials affected the adhesion.Resin-based temporary filling materials, however, adhered to the liner surface and impaired bonding of the luting composite.The protect Liner surface in contact with temporary filling materials showed various morphological alterations and decreased surface hardness, which might suggest interaction between the liner and temporary filling materials.
