title: Characteristics of denture thermoplastic resins for non-metal clasp dentures.
abstract: Six thermoplastic resins and conventional acrylic resin were examined to characterize their mechanical and physical properties, water sorption, solubility, flexural strength, modulus of elasticity, tensile strength and color stability. Thermoplastic resins for non-metal clasp dentures exhibiting low water sorption and solubility offer hygienic advantages. Since they have a low modulus of elasticity and are easily manipulated, these materials make it possible for larger undercuts to be used for retention compared to acrylic resin. Not all of the thermoplastic resins tested fractured after the bending test in contrast to the conventional denture base resin, which fractured when tested beyond its proportional limit. It was also found that clinically noticeable staining may occur on the polyamide resins and polyethylene terephtalate resins.
authors.affiliation: Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine, Yokohama, Kanagawa, Japan. takabayashi-yota@tsurumi-u.ac.jp
authors.forename: Yota
authors.initials: Y
authors.lastname: Takabayashi
mesh_terms: D000042:Absorption; D000180:Acrylic Resins / Q000737:chemistry; D000327:Adsorption; D055598:Chemical Phenomena; D003116:Color; D016734:Dental Clasps; D003764:Dental Materials / Q000737:chemistry*; D003779:Denture Design; D003781:Denture Retention / Q000295:instrumentation; D055119:Elastic Modulus; D006801:Humans; D008422:Materials Testing; D009757:Nylons / Q000737:chemistry; D018583:Pliability; D011093:Polyethylene Terephthalates / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry*; D012995:Solubility; D013314:Stress, Mechanical; D013450:Sulfones / Q000737:chemistry; D013499:Surface Properties; D013718:Tensile Strength; D014867:Water / Q000737:chemistry; D017155:Wettability
chemical_list: D000180:Acrylic Resins; D003764:Dental Materials; D009757:Nylons; D011093:Polyethylene Terephthalates; D011108:Polymers; D012117:Resins, Synthetic; D013450:Sulfones; D014867:Water; C075051:Acron MC; C017902:lexan; C040291:Lucitone; C045672:Reigning resin; D019904:Polymethyl Methacrylate