Reciprocal force generated by two sliding jigs: An alternative mechanic for molar protraction

Fazlur RNA. Fashih, Alma Kasita, Soekarsono Hardjono, Sri Suparwitri
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引用次数: 0

Abstract

Objective: When a first molar is lost, orthodontic replacement with second and third molars would be an excellent treatment option. There are some side effects that tend to occur during molar protraction, such as mesial tipping of molar that could increase the time required to correct. These side effects can be avoided by understanding the biomechanical variables affecting molar protraction. The author tries to present the modification of sliding jigs, instead of the power arm function, with additional of lingual force, for molar protraction. Methods: This case report describes the management of a 23-yearsold woman who was missing left mandibular first molar, had class III skeletal profile, and anterior crossbite. After anterior crossbite correction, the left mandibular first molar extraction spaces were closed by protraction of the second and third molars. Mesial tipping was detected in the early protraction phase when using conventional method. Consequently, uprighting procedure was done and protraction was continued using reciprocal force generated by two sliding jigs and lingual buttons to achieve bodily movement of tooth. Results: The result was excellent, the space was closed without tipping and rotation. Conclusion: The presented article provides an alternative mechanic for molar protraction using sliding jigs and how it can be designed to achieve predictable result.
两个滑动夹具产生的相互作用力:磨牙拉伸的另一种机制
目的:当第一磨牙缺失时,用第二和第三磨牙代替正畸是一个很好的治疗选择。磨牙拔除过程中会出现一些副作用,如磨牙的近端倾斜会增加矫正所需的时间。通过了解影响磨牙拔除的生物力学变量,可以避免这些副作用。作者试图提出一种改良的滑动夹具,以取代动力臂的功能,增加舌力,用于磨牙的伸出。方法:本病例报告描述了一名23岁的女性,左侧下颌第一磨牙缺失,骨骼轮廓为III类,前牙合。前牙合矫正后,通过第二磨牙和第三磨牙的拔除,关闭左下颌第一磨牙拔除间隙。采用常规方法在拉伸早期检测到中端倾翻。利用两个滑动夹具和舌部按钮产生的相互作用力,进行拔牙和拔牙,实现牙齿的身体运动。结果:手术效果良好,间隙闭合,无倾斜和旋转。结论:本文提供了一种使用滑动夹具进行磨牙牵引的替代机制,以及如何设计该机制以达到可预测的结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
0.50
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审稿时长
16 weeks
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