West China Journal of Stomatology

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A gate spring which can torque an individual tooth with high efficiency

Li Yu1, Guan Yu1, Pan Lanlan2, Zhao Zhihe1   

  1. 1. Dept. of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China; 2. Dept. of Prosthodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
  • Received:2012-04-25 Revised:2012-04-25 Online:2012-04-01 Published:2012-04-01
  • Contact: Li Yu,Tel:028-85503645
  • About author:Li Yu(1979—),男,重庆人,讲师,博士

Abstract:

It is to address torquing an individual tooth using a gate spring. The gate spring is made of a rectangular stainless steal wire, in the shape of a gate, which is incorporated to the archwire by spot welding. Torque is generated by the combined effects of the gate spring and the archwire. After 2 -3 months, the gate spring can obviously torque individual tooth.

Key words: torque, gate spring, orthodontic appliance