Kesling P C
Department of Orthodontics, St. Louis University Medical Center.
Am J Orthod Dentofacial Orthop. 1988 Jul;94(1):26-37. doi: 10.1016/0889-5406(88)90448-9.
The purpose of this article is to introduce an edgewise-type bracket that permits both initial Begg tooth movement and final edgewise torque and tip control with straight arch wires. Analysis of individual tooth movements during treatment of all types of malocclusions with the Begg technique shows that all teeth tend to tip distally or toward extraction sites if present. Given this tendency, it is possible through precise removal of diagonally opposed corners of conventional edgewise slots to permit desired initial free crown tipping yet provide predetermined secondary control of root uprighting as required for each tooth. Treatment can be carried out with four straight arch wires, two 0.016 inch (0.406 mm) and two 0.020 inch (0.508 mm), in conjunction with selective applications of 2 ounce (57 g) forces. Mesiodistal root uprighting and labiolingual torque are achieved with uprighting springs and torquing auxiliaries. Special elastomeric ties and torquing flaps in conjunction with the unique brackets and round molar tubes provide the final option to capture all preangulations (tip and torque) from two full-sized, highly resilient rectangular arch wires.
本文旨在介绍一种方丝弓类托槽，它既能实现最初的Begg牙齿移动，又能利用直丝弓实现最终的转矩和倾斜度控制。对使用Begg技术治疗各类错牙合畸形时的单个牙齿移动情况进行分析后发现，如果有拔牙位点，所有牙齿都有向远中倾斜或向拔牙位点倾斜的趋势。鉴于这种趋势，通过精确去除传统方丝弓托槽对角相对的角，可以实现理想的初始自由冠倾斜，同时根据每颗牙齿的需要提供预定的牙根直立二级控制。治疗可以使用四根直丝弓，两根0.016英寸（0.406毫米）和两根0.020英寸（0.508毫米），并结合选择性施加2盎司（57克）的力。通过直立弹簧和转矩辅助装置实现近远中向牙根直立和唇舌向转矩。特殊的弹性结扎丝和转矩翼片与独特的托槽和圆形磨牙管相结合，提供了最终的选择，能够从两根全尺寸、高弹性的矩形丝弓捕捉所有的预成角度（倾斜和转矩）。
