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Title:
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Mechanical properties of a new thermoplastic polymer orthodontic archwire
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Author:
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Varela, Juan Carlos; Velo, Marcos; Espinar Escalona, Eduardo; Llamas Carreras, Jose Maria; Rupérez de Gracia, Elisa; Manero Planella, José María; Gil Mur, Francisco Javier
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Other authors:
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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 |
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Abstract:
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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. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
-Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials::Assaigs mecànics
-Thermoplastics
-Orthodontics, Corrective
-Polymers in medicine
-Polymers--Mechanical properties
-Polymer archwire
-Orthodontic applications
-Mechanical properties
-Friction
-Ortodòncia
-Odontologia -- Aparells i instruments
-Polímers -- Propietats mecàniques
-Polímers en medicina
-Termoplàstics -- Proves |
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Rights:
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Document type:
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Article - Published version
Article |
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