Submitted: 23 Jul 2013
Accepted: 18 Nov 2013
ePublished: 18 Nov 2013
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J Iran Dent Assoc. 2013;25(3): 190-197.
  Abstract View: 23

Original

Effect of Denture Cleansers on Tensile Bond Strength of Soft Liners to Denture Base Resin

Farideh Geramipanah, Ali akbar Moradi Haghighi, Somayeh Zeighami*
*Corresponding Author: Email: s-zeighami@tums.ac.ir

Abstract

  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 .

 

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