Mechanical properties of a new thermoplastic polymer orthodontic archwire

Autor: Jose Maria Llamas, Juan Carlos Varela, E. Espinar, Elisa Rupérez, Marcos Velo, F. Javier Gil, José María Manero
Přispěvatelé: Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica, Universitat Politècnica de Catalunya. CDAL - Centre de Disseny d'Aliatges Lleugers i Tractaments de Superfície, Universitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits
Rok vydání: 2014
Předmět:
Materials science
Friction
Polymers
Three point flexural test
Termoplàstics -- Proves
Enginyeria dels materials::Assaig de materials::Assaigs mecànics [Àrees temàtiques de la UPC]
Ortodòncia
Enginyeria dels materials::Materials plàstics i polímers [Àrees temàtiques de la UPC]
Mechanical properties
Biocompatible Materials
Bioengineering
Orthodontic applications
Bending
Orthodontics
Corrective
Biomaterials
Materials Testing
Ultimate tensile strength
Orthodontic Wires
Stress relaxation
Thermoplastics
Formability
Composite material
Polymers in medicine
Polímers -- Propietats mecàniques
Slipping
chemistry.chemical_classification
Temperature
Polímers en medicina
Polymer
Polymer archwire
chemistry
Mechanics of Materials
Odontologia -- Aparells i instruments
Polymers--Mechanical properties
Stress
Mechanical
Thermoplastic polymer
Zdroj: Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
ISSN: 0928-4931
DOI: 10.1016/j.msec.2014.05.008
Popis: A new thermoplastic polymer for orthodontic applications was obtained and extruded into wires with round and rectangular cross sections. We evaluated the potential of new aesthetic archwire: tensile, three point bending, friction and stress relaxation behaviour, and formability characteristics were assessed. Stresses delivered were generally slightly lower than typical beta-titanium and nickel-titanium archwires. The polymer wire has good instantaneous mechanical properties; tensile stress decayed about 2% over 2 h depending on the initial stress relaxation for up to 120 h. High formability allowed shape bending similar to that associated with stainless steel wires. The friction coefficients were lower than the metallic conventional archwires improving the slipping with the brackets. This new polymer could be a good candidate for aesthetic orthodontic archwires.
Databáze: OpenAIRE
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