Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/2494
標題: 舌側與唇側牙齒矯正力學行為比較
Comparsion of mechanics behavior between Lingual Orthodontics and Labial Orthodontics
作者: 蔣効璟
Chiang, Hsiao-Ching
關鍵字: labial orthodontics;唇側矯正;lingual orthodontics;arch wire;space closure;舌側矯正;牙弓線;關閉空間
出版社: 機械工程學系所
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摘要: 
齒列矯正發展至今已由以往的貴族專用逐漸一般大眾化,一般人對於齒列矯正也不再直覺反應是一種牙齒整形,而是為了自己口腔的健康著想,因此主動接觸並參與齒列矯正治療的人也越來越多。矯正器的發展也由基本款式的不鏽鋼到陶瓷材料,由明顯易見的唇側矯正到完全隱藏的舌側矯正,甚至連矯正器都不用,只需要一根矯正線,各式各樣的發展讓使用者可以更舒適、更有自信的展現自我。
本研究利用有限元素方法來針對齒列矯正過程中在拔除第一小臼齒後利用彈簧力進行關閉空間(space closure)的情況下進行探討,以三個臨床上常使用的矯正形式及矯正牙弓線案例做比較。第一個案例為「唇側矯正與舌側矯正比較」,第二個案例為「舌側牙弓線不同鉤爪(hook)形式的比較」,最後一個案例為「舌側牙弓線不同位置鉤爪(hook)的比較」。由分析結果可得知,在相同彈簧力作用下,鉤爪(hook)的施力位置愈接近牙齒抵抗中心且架設的角度與牙齒愈趨近平行,牙齒就愈能夠以平移(body movement)的方式移動;鉤爪的形式以直接加載型對力量的傳遞較為確實;鉤爪架設的位置在側門齒與犬齒之間可以達到較好的矯正效果。

Orthodontics has been developed from dedicated to the nobility gradually to the general public. Today most people don't consider orthodontics is plastic surgery as before. On the contrary, there think the orthodontics is a medical treatment which is good for their own oral health. Therefore, more and more people go to dentist asking for orthodontic treatment. The development of braces also has been improved from the basic style of stainless steel to ceramic materials, from the clearly visible labial side to completely hidden lingual orthodontics. Furthermore, orthodontic treatment now even can just use a correction line without braces. A wide range of development in orthodontics can let users feel more comfortable, and have more confident on their appearance.
This research is done by using Finite Element Method and is focus on the space closure stage of orthodontics. That is the process of using spring force to close the space generated by extracting the first premolar. Three common clinical cases are discussed in here. The first case is comparison between labial and lingual orthodontics. The second case is comparison of different form of the arch wire hooks. The last case is comparison of different positions of lingual arch wire hooks. We found that if we want the tooth to move approximate to the condition called “body movement” for same spring force, then the position of applied force on hook must near to the resistance center of tooth and also the angle of hook should near parallel to the tooth. The type of the hook fixed on the arch wire has the best performance on the force transferred. The hook fixed between the second incisor and canine has better result of orthodontic.
URI: http://hdl.handle.net/11455/2494
其他識別: U0005-2207201012215200
Appears in Collections:機械工程學系所

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