title: Basic evaluation on physical properties of experimental fluorinated soft lining materials.
abstract: The purpose of the present study was to compare the properties required for the clinical application of soft lining materials containing a fluorinated monomer versus that of conventional materials in an effort to develop a new soft lining material with long-term stable viscoelastic properties. Four soft lining materials were examined. Two experimental materials containing dodecafluoroheptyl methacrylate (SR12F) or tridecafluorooctyl methacrylate (SR13F) were prepared. Two commercial soft lining materials, one acrylic-based and one silicone rubber-based, were selected as reference materials. Shore A hardness, viscoelastic properties, water sorption, solubility, and staining resistance were evaluated. The Shore A hardness and the displacements were analyzed with two-way analysis of variance (ANOVA) and Tukey's HSD test. The water sorption, the solubility and the color change were analyzed with one-way ANOVA and Tukey's HSD test. The significance level was set at 0.05. SR12F and SR13F showed greater viscous flow, low water sorption, low solubility, and good staining resistance compared to the commercial products. The results indicate that the soft lining materials containing fluorinated monomers might have a potentially long-term stable viscoelastic behavior.
authors.affiliation: Complete Denture Prosthodontics, Department of Masticatory Function Rehabilitation, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan. y.kasuga.ore@tmd.ac.jp
authors.forename: Yuta
authors.initials: Y
authors.lastname: Kasuga
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Takahashi
authors.forename: Norihisa
authors.initials: N
authors.lastname: Akiba
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Minakuchi
authors.forename: Nariko
authors.initials: N
authors.lastname: Matsushita
authors.forename: Munemitsu
authors.initials: M
authors.lastname: Hishimoto
mesh_terms: D055598:Chemical Phenomena; D003779:Denture Design; D003822:Denture Liners; D003824:Denture, Complete; D004548:Elasticity; D017611:Fluorine Compounds / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D013997:Time Factors
chemical_list: D017611:Fluorine Compounds; D008689:Methacrylates; D011108:Polymers