A COMPARISON OF BOND STRENGTHS AMONG CHAIRSIDE HARD RELINE MATERIALS

Several chairside hard resin reline materials have been introduced to improve the fit and function of existing denture bases. However, it is not known whether the bond strengths among the various chairside reli ne and denture bass materials are significantly affected by their diff erences in chemical composition. This study evaluated the bond strengt hs of five chairside hard reline materials (Extoral VLC, Flexacryl Har d, Kooliner, Light Liner, and Triad Hi-Flow VLC reline material) to tw o different denture base resins (Lucitone 199 and Triad VLC) by use of a three-point transverse flexural test. The reline resins are represe ntative of autopolymerizing, light- and dual-cured materials. The resu lts indicate that Triad VLC reline resin with bonding agent gave the h ighest bond strengths to Triad VLC denture base resin. Light Liner rel ine resin gave the highest repair bond strengths to Lucitone 199 dentu re base resin.