title: [Materials and technologies for fabricating denture bases].
abstract: The materials and technologies for fabrication of denture bases have developed during the last 150 years. The requirements of the ideal material are versatile and include functional, physical and esthetical demands. The current manuscript classifies denture base materials according to their chemical characteristics into polymers, reinforced polymers and light cured polymers. Poly Methyl Metacrylate (PMMA) was developed 70 years ago, and is still the major material for fabrication of denture bases due to its esthetic characteristics, high processing and polishing abilities, relining and rebasing possibility and low cost. The main disadvantages of PMMA are its dimensional changes during polymerization, porosity and allergic/cytotoxic effects. PMMA may be reinforced by metal, polyethylene or glass fibers. Other materials used for fabrication of denture bases are Nylon and Urethane dimethacrylate. Their advantages are better esthetics, low modulus of elasticity and reduced cytotoxicity. This review presents the advances in materials and techniques used for denture bases, the different materials, their advantages and disadvantages, the chemical reactions associated with their production, and their allergic and cytotoxic side effects.
authors.affiliation: Dept. of Oral Rehabilitation, the Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem.
authors.forename: Y
authors.initials: Y
authors.lastname: Pietrokovski
authors.forename: R
authors.initials: R
authors.lastname: Pilo
authors.forename: A
authors.initials: A
authors.lastname: Shmidt
mesh_terms: D003819:Denture Bases; D055119:Elastic Modulus; D006801:Humans; D008689:Methacrylates / Q000009:adverse effects / Q000737:chemistry; D009757:Nylons / Q000009:adverse effects / Q000737:chemistry; D011108:Polymers / Q000009:adverse effects / Q000737:chemistry*; D019904:Polymethyl Methacrylate / Q000009:adverse effects / Q000737:chemistry*; D011140:Polyurethanes / Q000009:adverse effects / Q000737:chemistry; D016062:Porosity
chemical_list: D008689:Methacrylates; D009757:Nylons; D011108:Polymers; D011140:Polyurethanes; C029824:urethane dimethacrylate luting resin; D019904:Polymethyl Methacrylate