title: Dynamic viscoelastic properties of antimicrobial tissue conditioners containing silver-zeolite.
abstract: OBJECTIVE
  The purpose of this study was to determine the effects of including the antimicrobial silver-zeolite (SZ) on the dynamic viscoelastic properties of various tissue conditioners.
  
  
  METHODS
  The dynamic viscoelastic properties of five commercially available tissue conditioners: Visco-gel (VG), GC Soft-Liner (SL), FITT (FT), SR-Ivoseal (IV) and Shofu Tissue Conditioner (TC) containing SZ were evaluated after 1 and 28 days of water- and artificial saliva immersions with the use of complex modulus and loss tangent parameters. Values for these two parameters for each tissue conditioner were statistically analyzed by one- and two-way ANOVA and Bonferroni's test.
  
  
  RESULTS
  Complex modulus and loss tangent values of TC were not significantly different among specimens containing 0, 2, 5 and 10 wt.%-SZ, respectively. In FT and TC containing 2 wt.%-SZ, these values were not significantly different between 1 and 28 days in both water- and saliva immersions.
  
  
  CONCLUSIONS
  The results suggest that incorporating SZ does not affect TC's inherent dynamic viscoelastic properties, while the other tissue conditioners investigated may be found to have changed viscoelastic properties as a consequence of the inclusion of SZ.
authors.affiliation: Department of Removable Prosthodontics, Hiroshima University School of Dentistry, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ueshige
authors.forename: Y
authors.initials: Y
authors.lastname: Abe
authors.forename: Y
authors.initials: Y
authors.lastname: Sato
authors.forename: K
authors.initials: K
authors.lastname: Tsuga
authors.forename: Y
authors.initials: Y
authors.lastname: Akagawa
authors.forename: M
authors.initials: M
authors.lastname: Ishii
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000704:Analysis of Variance; D000890:Anti-Infective Agents / Q000737:chemistry*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003764:Dental Materials / Q000737:chemistry*; D004548:Elasticity; D005782:Gels / Q000737:chemistry; D006801:Humans; D007101:Immersion; D008689:Methacrylates / Q000737:chemistry; D010795:Phthalic Acids / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D014016:Tissue Conditioning, Dental; D014783:Viscosity; D014867:Water / Q000737:chemistry; D017641:Zeolites / Q000737:chemistry*
chemical_list: D000180:Acrylic Resins; D000890:Anti-Infective Agents; D003764:Dental Materials; D005782:Gels; D008689:Methacrylates; D010795:Phthalic Acids; D012464:Saliva, Artificial; D014867:Water; C073909:GC Soft-Liner; D017641:Zeolites; C043685:Coe Comfort; D012834:Silver