Iranian Dental Association Journal of Iranian Dental Association 3060-8201 25 3 2013 07 01 Effect of Denture Cleansers on Tensile Bond Strength of Soft Liners to Denture Base Resin 190 197 EN Farideh Geramipanah Ali akbar Moradi Haghighi Somayeh Zeighami Journal Article 2013 07 23 2013 11 18 Background and Aim : Optimal bond strength between soft liners and denture base resin is an important requirement for application of these materials. This study aimed to determine the effect of 2.5% sodium hypochlorite (NaOCl) and Corega denture cleanser solutions on tensile bond strength of Acropars, Molloplast-B, GC soft liner and Mollosil soft liners to denture base resin . Materials and Methods : In this in-vitro experimental study, 30 specimens of each of the 4 soft liners according to the manufacturer’s instructions were processed between two blocks of polymethyl methacrylate. Specimens were divided into 3 groups and after immersion in 2.5% sodium hypochlorite and Corega solutions were subjected to tensile bond strength testing using Universal Testing Machine (Zwick Roell, Z50, Germany) with a crosshead speed of 5 mm/min. Data were analyzed with two-way ANOVA, Tamhane’s post hoc test and Fisher’s exact test . Results : The mean tensile bond strength of all three testing positions was 3.27 ± 1.04, 0.93 ± 0.35, 0.71 ± 0.31 and 0.28 ± 0.11 MPa for Acropars, Molloplast-B, GC soft liner and Mollosil, respectively. Type of soft liner material had a significant effect on the tensile bond strength of soft liner to denture base resin (P<0.0001) but type of cleansing solution had no significant influence on tensile bond strength of specimens . Conclusion : The 2.5% sodium hypochlorite and Corega solutions had no significant effect on tensile bond strength of soft liners to denture base .