Evaluation of tensile bond strength of heat cure and autopolymerizing silicone-based resilient denture liners before and after thermocycling

Abstract

Although heat-polymerized denture liners require more processing time than autopolymerizing liners, but they display much better adhesion properties to denture base resin and should thus be preferred when soft liner has to be used for a longer duration of time.

Factors Affecting the Bond Strength between Denture Basis and the Soft Relining Materials - A Review

“…Nevertheless the bond remains stronger in Molloplast B in comparison to Mollosil. This shows that the heat-curing relining materials have higher tensile strength module [47]. These statements are in agreement with the results of similar studies conducted by Kulak-Ozkan Y. et al; Pinto J. et al [48,49].…”

Double‐Layer Surface Modification of Polyamide Denture Base Material by Functionalized Sol‐Gel Based Silica for Adhesion Improvement

“…24 The autopolymerizing reline resins are based on polymethylmethacrylate (PMMA) or polyethyl methacrylate (PEMA) co-polymer; hence, due to their almost similar chemical composition, the autopolymerizing resin actively bonds to the heat-cured denture base material. 25,26 Vertex is a thermoplastic polyamide produced by condensation reaction of diamines with dibasic acids. 5,6 The chemical resistance of polyamide polymers is due to their high degree of crystallinity.…”

“…Penetration and diffusion of monomer into the resin base can also influence the bond strength . The autopolymerizing reline resins are based on polymethylmethacrylate (PMMA) or polyethyl methacrylate (PEMA) co‐polymer; hence, due to their almost similar chemical composition, the autopolymerizing resin actively bonds to the heat‐cured denture base material . Vertex is a thermoplastic polyamide produced by condensation reaction of diamines with dibasic acids .…”

Comparative evaluation of shear bond strength of two different chairside soft liners to heat processed acrylic denture base resin: An in vitro study

“…The higher bond strength of the silicone-based liners may be attributed to the improved adhesive bonding system used which usually contains silicone polymer in volatile solvents that can penetrate the acrylic resin. [ 16 ] The acrylic-based liners though chemically similar to the resin denture base show lower bond strength because of the limited ability of the monomer to penetrate the resin and the varying degrees of polymerization seen. It has been proposed that highly cross-linked denture or denture teeth polymers restrict the penetration of monomers because of the high density of the polymer network, and thus are not as effectively bonded.…”