前牙转矩辅弓的应用.pdf

口腔正畸学 2005 年第 12 卷第 4 期 1·77 · ·临床技术篇 · 前牙转矩辅弓的应用 陈　蓉 　杨雁琪 【摘要】　目的　本文旨在介绍一种将上下颌前牙根唇向或舌向移动的简单有效的方法 ———前牙转矩 ( ) 辅弓 A R T 辅弓 。方法 　文中介绍了 A R T 辅弓的结构 、生物力学原理 ,并对 A R T 辅弓的临床应用进行 了详细说明 ,包括适应征及应用时机 、主弓丝的选择 、操作步骤 、临床调整 ,并附病例报告 。结果 　A R T 辅 弓可以有效地对上下颌前牙进行转矩控制 , 同时由于其独特的生物力学特点而产生加强下后牙支抗 、打开 咬合 、远中直立磨牙等临床效果 。结论 　A R T 辅弓应用在“精细调整”阶段调整前牙关系时收效显著 。 【关键词】　前牙 ; 转矩 ; 辅弓 Ap p li c a t i on of a n t er i or r oot t or qu i n g a u xili a r y a r c h C H E N R ong , YA N G Yanqi P ractice L i m i te d to Ort hodoni tcs , US A 【A bs t r a ct 】　Obj ect i ve 　The aim of t he p resent article i s to int roduce an effective , simple met hod to u se sp ring for movement of t he root s of t he maxillary and mandibular ant erior t eet h eit her lingually or labially . Met h ods 　The st ruct ure and p hy sics of Ant erior Root Torquing ( A R T) Auxiliary Arch were demon st rat ed . It was explained how A R T Auxiliary Arch i s u sed clinically , including t he clinical applying in st ances , choo sing main archwire , p rocedure and adj u st ment . Two ca ses were report ed to explain t he clinical application of A R T Auxiliary Arch . Res u l t s 　A R T Auxiliary Arch i s not only a unique app roach to root torquing , but al so leveling t he curve of Sp ee , op ening t he bit e and enhancing t he anchorage of mandibular molar s at t he same time . Con cl u s i on 　A R T Auxiliary Arch i s very effective when op timizing t he relation ship of ant erior o