Saklecha Bhuwan, Tekale Pawankumar Dnyandeo, Sonawane Shivprasad V, Shah Pratik Rajesh, Patil Harshal Ashok
Reader, Department of Orthodontics, Index Institute of Dental Sciences, Indore, Madhya Pradesh, India.
Senior Lecturer, Department of Orthodontics, Dr Rajesh Ramdasji Kambe Dental College and Hospital, Akola, Maharashtra, India.
J Clin Diagn Res. 2017 May;11(5):ZH01-ZH02. doi: 10.7860/JCDR/2017/26291.9858. Epub 2017 May 1.
Correction of dental crowding can be achieved with several orthodontic procedures like extraction of teeth, proximal stripping etc. In contemporary orthodontic practice, resolution of incisor crowding is most commonly achieved by the use of canine lacebacks. This method takes time, requires frequent activations and taxes anchorage since it involves the "PULL" mechanics. In order to overcome these disadvantages, mostly the time factor, we devised a method of using open coil NiTi spring on 0.016" SS wire piggy backed on the 0.014" heat activated NiTi base arch wire ligated only at the canines. This method, resolved the incisor crowding in almost one third of the time taken with the use of canine lacebacks. Moreover, the result was more physiologic since light continuous force was applied with the spring and it essentially eliminated the anchorage loss since it involved "PUSH" mechanics.
通过多种正畸程序，如拔牙、邻面去釉等，可以实现牙列拥挤的矫治。在当代正畸实践中，解决切牙拥挤最常用的方法是使用尖牙回拉法。这种方法耗时较长，需要频繁加力，并且由于涉及“拉”的力学原理，对支抗要求较高。为了克服这些缺点，主要是克服时间因素，我们设计了一种方法，即在仅结扎于尖牙的0.014英寸热激活镍钛主弓丝上，用0.016英寸不锈钢丝搭载开放螺旋镍钛弹簧。这种方法将切牙拥挤的矫治时间缩短至使用尖牙回拉法所需时间的近三分之一。此外，由于弹簧施加的是轻柔持续力，结果更符合生理状态，并且由于涉及“推”的力学原理，基本消除了支抗丧失。
