高效改正单个牙转矩的门形辅弓
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[摘要] 本文介绍一种用于改正单个牙转矩的门形辅弓。门形辅弓由不锈钢方丝弯制，呈拱门形，点焊于主弓丝上。通过门形辅弓和主弓丝同时作用施加转矩力，2～3个月后单个牙的转矩即可得到明显改善。
[关键词] 转矩； 门形辅弓； 正畸矫治器
[中图分类号] R 783.5 [文献标志码] A [doi] 10.3969/j.issn.1000-1182.2012.02.028
A gate spring which can torque an individual tooth with high efficiency Li Yu1, Guan Yu1, Pan Lanlan2, Zhao Zhihe1. (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)
[Abstract] It is to address torquing an individual tooth using a gate spring. The gate spring is made of a rectan-gular 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 ......
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