Mechanical properties of orthodontic wires made of super engineering plastic.
Most orthodontic equipment is fabricated from alloys such as stainless steel, Co-Cr and Ni-Ti because of their excellent elastic properties. In recent years, increasing esthetic demands, metal allergy and interference of metals with magnetic resonance imaging have driven the development of non-metallic orthodontic materials. In this study, we assessed the feasibility of using three super engineering plastics (PEEK, PES and PVDF) as orthodontic wires. PES and PVDF demonstrated excellent esthetics, although PEEK showed the highest bending strength and creep resistance. PEEK and PVDF showed quite low water absorption. Because of recent developments in coloration of PEEK, we conclude that PEEK has many advantageous properties that make it a suitable candidate for use as an esthetic metal-free orthodontic wire.
Department of Orthodontic Science, Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
Minami
M
Maekawa
Zuisei
Z
Kanno
Takahiro
T
Wada
Toshio
T
Hongo
Hisashi
H
Doi
Takao
T
Hanawa
Takashi
T
Ono
Motohiro
M
Uo
D001577:Benzophenones; D003799:Dental Stress Analysis; D004548:Elasticity; D005240:Feasibility Studies; D007659:Ketones / Q000737:chemistry*; D008422:Materials Testing; D009969:Orthodontic Wires; D011092:Polyethylene Glycols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D013450:Sulfones / Q000737:chemistry*; D013499:Surface Properties; D013718:Tensile Strength; D005465:Fluorocarbon Polymers
D001577:Benzophenones; D007659:Ketones; D011092:Polyethylene Glycols; D011108:Polymers; D011145:Polyvinyls; D013450:Sulfones; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers; C022840:polyether sulfone; C063834:polyetheretherketone