title: Resilient lining materials for dentures.
abstract: Modern resilient liners may be broadly classed as plasticized resins, silicone rubbers and fluoropolymers. Desirable properties would be pronounced softness and resiliency, or visco elasticity. Compression tests of Molloplast B (a silicone rubber), Kurepeet (a fluoropolymer), Visco-gel (a tissue conditioner) and Xantopren ( a silicon impression material) (as control) showed a displacement of 4% and recovery to 0.4% permanent deformation after 15s of loading for Molloplast and Xantopren, and up to 32% and 13% displacement respectively for Visco-gel and Kurepeet followed by considerable permanent deformation. Recovery of the latter showed a typical curve for visco-elasticity. The small amount of initial deformation of the elastic materials on the other hand indicated unyielding and consequently unsatisfactory properties. The deformation of Kurepeet was not as great as Visco-gel but the fact that it was visco-elastic meant that it was likely to be a suitable long-term lining material. It therefore complied with requirements that a resilient denture liner should be soft and visco-elastic.
authors.affiliation: Department of Prosthetic Dentistry, University of Sydney, Surry Hills, NSW, Australia.
authors.forename: C J
authors.initials: CJ
authors.lastname: Thomas
authors.forename: T
authors.initials: T
authors.lastname: Mori
mesh_terms: D003799:Dental Stress Analysis; D003822:Denture Liners; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D004548:Elasticity; D005465:Fluorocarbon Polymers / Q000737:chemistry; D006244:Hardness; D008422:Materials Testing; D008689:Methacrylates; D008768:Methylmethacrylates / Q000737:chemistry; D012826:Silicone Elastomers / Q000737:chemistry; D013718:Tensile Strength; D014783:Viscosity
chemical_list: D004129:Dimethylpolysiloxanes; D005465:Fluorocarbon Polymers; C100656:Kurepeet; C020964:MDX 4-4210; D008689:Methacrylates; D008768:Methylmethacrylates; D012826:Silicone Elastomers; C009931:poly(ethylmethacrylate)