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Evaluation of some properties of four silicon based soft denture reliner materials | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 23, Issue 2, 2011, Pages 36-42 | ||
| Authors | ||
| Khadija S. Hassen; Salah A. Mohammed | ||
| Abstract | ||
| ABSTRACTBackground: lining materials have been widely used for prosthodontics rehabilitation. One unresolved problem is theeasy adherence of Candida to these materials because roughness of porous surface, inadequate adhesion ofsilicon to acrylic denture base is the most problem of the silicone soft liner material. Although silicone soft linermaterials have more stability when compared with acrylic based type of soft liner material but they still show severaldisadvantages like the material have susceptibility to water absorbed of solvents and particular water and loss ofsoluble components and this lead to effect the strength of bond and change visicoelasticity of material. Thepurpose of this study was to compare among four silicone based soft liner materials (permaflex and Molloplast, UfiGel SC and permafix) in invitro investigations properties shear bond, water sorption and solubility and surfaceroughness test.Materials and methods: Seventy two specimens of 4 silicon based soft lining material, 24 for each material, 6 for eachtest, the specimens of shear bond strength test were subjected to tension in instron machine with speed rate was 0.5mm/minute to measure shear bond strength by N/mm . The surface roughness samples were measured by usingprofilometer device. The final test of this study was water sorption and solubility according to ADA specification No.12 (1999) All data were collected and analyzed by ANOVA and LSD tests, the finding showed the permaflex hadhigh shear bond strength followed by Molloplast, Permafix respectively and the least bond strength was for Ufi GelResults: of surface roughness test showed the same mean value among most of the materials. For water sorptionand solubility test the permaflex had the lowest value and followed by Molloplast and was not significant changebetween permafix and Ufi Gel SC.Conclusions: indicated that permaflex shows better properties when compared with other soft liner materials andthat hot cure polymerizing soft liner material showed proper properties when compared with auto polymerizing softliner material.Keywords: Denture liner, silicon based. (J Bagh Coll Dentistry 2011;23(36-42). | ||
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