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  5. 使用指樣彈線改正前牙錯咬效果之研究
 
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使用指樣彈線改正前牙錯咬效果之研究

Other Title
The study of effects on correction of anterior crossbite by using lingual holding arch with finger springs
Type
thesis
Date Issued
2014-06-09
Author(s)
施玫如
Advisor
鄭信忠
Subjects
系所名稱:牙醫學系碩博士班
Description
學位別:碩士
語文別:英文
指導教授:鄭信忠
共同指導教授:
口試委員:高嘉澤;蔡吉陽
中文關鍵字:前牙倒咬;舌側裝置;指樣彈線
Abstract
前牙錯咬是指上門牙咬在下門牙的舌側,病人或其家長通常會因為美觀因素來醫院尋求矯正治療。鄭醫師是使用一種固定式裝置-舌側弓合併指樣彈線,來改正病人前牙倒咬的問題。本研究的目的,是使用側顱片分析、探討使用此裝置改正前牙倒咬後,檢視在骨頭、牙齒、軟組織方面有甚麼變化。

本研究屬於回顧性研究,共收集30個案例,包括13名女性和17名男性,全部都是在台北醫學大學附設醫院做矯正治療。病例收集條件須符合:(1)病人有一顆或多顆門牙為倒咬;(2) 病人之前沒有做過矯正治療;(3) 前牙倒咬必須是經由此裝置所改正。治療前後都必須有側顱X光片,若資料不完全則排除此病例。另外,根據倒咬門牙數目分為3組去看組別之間有無差異。所有側顱片會轉為數位檔,用Viewbox這個軟體做數位描點、分析。

由側顱分析結果來看治療後的改變,整體而言,除了overjet變正值,前牙咬合深度(overbite)變淺,牙齒的移動包括上門牙往前、下門牙往內且往下、上臼齒往後且往下、下臼齒往下。上述牙齒的移動,導致下顎位置上的改變,由SNB角度及Pog的位置可知下顎呈現順時針方向旋轉。治療的改變在組別間無顯著差異,除了第三組的overbite變得比較淺及上唇位置有明顯往外,其他像是在年齡分布、治療時間或其他測量值並無明顯不同。由多元迴歸分析來看,overjet的改善是和上下門牙牙冠的位置改變有顯著相關。而上門牙在水平方向上的移動速度平均是每個月2.5mm。
URI
https://203.71.86.71/handle/123456789/56681

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