Absence of durable and effective bond between the silicone soft liner and acrylic resin lead to the progressive formation of micro-gaps at the resin base-soft liner interface in silicone soft liner bonded acrylic resin prosthesis over a period of clinical use. Existence of such micro-gaps may serve as a source of micro-leakage and microbial colonization at this resin base- soft liner junction; which causes further widening of the micro-gap ultimately...