Dynamic viscoelastic properties, water absorption, and solubility of home reliners.
Scant rheological information is available regarding home reliners (liner type denture adhesives). We evaluated 6 different home reliners in regard to their viscoelastic properties, water absorption and solubility. Dynamic viscoelastic properties and changes over time were determined using a dynamic viscoelastometer, while weight changes, absorption, and solubility during immersion in water were also investigated. We found that the dynamic viscoelasticity of the tested home reliners was sensitive to changes in frequency, while the materials used had nearly no elasticity and exhibited viscous behaviors. They showed a dramatic change in viscoelastic properties and increase in weight after approximately 1 day of water immersion. A considerably high percentage of water absorption was also observed. From the viewpoint of dynamic viscoelastic properties and durability, our results indicate that the tested home reliners would not be suitable for improvement of ill-fitting dentures.
Murata
Hiroshi
H
Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan. hmurata@nagasaki-u.ac.jp
Hong
Guang
G
Yamakado
Chiaki
C
Kurogi
Tadafumi
T
Kano
Hiroshi
H
Hamada
Taizo
T
D000042:Absorption; D000269:Adhesives / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D003822:Denture Liners; D004548:Elasticity; D000431:Ethanol / Q000737:chemistry; D006801:Humans; D007101:Immersion; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D011145:Polyvinyls / Q000737:chemistry; D011409:Propylene Glycols / Q000737:chemistry; D012212:Rheology; D012995:Solubility; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D014783:Viscosity; D014867:Water / Q000737:chemistry
D000269:Adhesives; D001672:Biocompatible Materials; D003764:Dental Materials; D008689:Methacrylates; D011108:Polymers; D011145:Polyvinyls; D011409:Propylene Glycols; D014867:Water; C012504:polypropylene glycol; C013215:polyvinyl acetate; D000431:Ethanol