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      A new polyisoprene-based light-curing denture soft lining material

      , , , ,
      Journal of Dentistry
      Elsevier BV

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          Abstract

          The purpose of this study was to investigate some clinically relevant properties of Clearfit LC, a newly developed polyisoprene-based light-curing lining material. Its properties were compared with those of other four commercial products. Five soft lining materials, Clearfit LC, two plasticised acrylics (Super-soft, Soften) and two silicones (Molloplast B, Sofreliner) were used to determine water sorption, solubility, staining resistance, Shore A hardness and shear bond strength to denture base. Five specimens for each test were fabricated. The results of each test among the five materials were compared by one-way ANOVA and Scheffe's post-hoc test at alpha=0.05. One-way ANOVA of each test showed that the differences among five materials were significant (P<0.05). Clearfit LC showed the intermediate water sorption and solubility (10.07; 1.72 microg/mm(3)). It also showed the lowest color change in beta-carotene/olive oil solution and instant coffee solution (DeltaE=1.19, 5.48, respectively). The shear bond strength of Clearfit LC was 1.56MPa, and no adhesive failure was found. Its Shore A hardness value (56.2) was located between two acrylics and silicones. It was also found that the softer materials tend to failure cohesively. The polyisoprene-based lining material showed low water sorption and solubility, moderate softness, high staining resistance and satisfactory shear bond strength to denture base resin. It also provides clinicians sufficient working time due to its light-curing property. It would be an attractive alternative as a relining material.

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          Author and article information

          Journal
          Journal of Dentistry
          Journal of Dentistry
          Elsevier BV
          03005712
          May 2003
          May 2003
          : 31
          : 4
          : 269-274
          Article
          10.1016/S0300-5712(03)00031-9
          12735921
          a8c1ce0f-70f5-4f84-a2a6-eebe2d63358f
          © 2003

          https://www.elsevier.com/tdm/userlicense/1.0/

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