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  5. 預製支台體與CAD/CAM客製化支台體的固定贋復物在骨水平植體系統上的回顧性比較
 
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預製支台體與CAD/CAM客製化支台體的固定贋復物在骨水平植體系統上的回顧性比較

Other Title
Retrospective comparison of fixed dental prostheses supported by preformed stock versus CAD/CAM customized abutments on bone level implant system
Type
thesis
Date Issued
2022-07-04
Author(s)
林慧婷
Advisor
方致元
Subjects
系所名稱:牙醫學系碩士班
Publisher
牙醫學系碩士班
Description
口試委員:黃仁勇 HUANG, REN-YEONG;張維仁 CHANG, WEI-JEN;方致元 FANG, CHIH-YUAN
網際網路,開放日期為2022-07-20
Abstract
背景:人工植牙治療已應用於許多臨床缺牙修復,從單顆植牙到全口重建皆適用。近年來,隨著CAD/CAM 電腦輔助設計/電腦輔助製造技術的發展,客製化支台體的使用越來越多,為保持理想的萌出輪廓、實現最佳贋復型態提供了解決方案。
研究目的:人工植牙周圍骨水平高度的維持為評估植牙成功的條件之一,而植體周圍骨水平高度與支台體的穩定性相關。與原廠預製支台體相比,CAD/CAM 客製化支台體的製作及加工過程中存在尺寸公差與潛在缺點,可能會改變植體與原廠支台體間連接的緊密性與無縫性,進而影響人工植牙長期穩定性及壽命。本研究的目的是以放射線影像測量CAD/CAM 客製化支台體與原廠預製支台體在功能負載前後的周圍骨質結果。
材料與方法:本回溯性研究之放射線影像來自台北醫學大學雙和醫院。分為兩個不同的組別,CAD/CAM 客製化支台體組與原廠預製支台體組。植牙手術與假牙贋復流程均由同一位經驗豐富的牙醫師完成,取模約兩週後,按照製造商的說明標準,用24 牛頓/公分的扭力扳手固定支台體。以功能負載前、功能負載1 個月、3、6、12 個月後所拍攝之放射線影像,測量植體邊緣骨水平高度進行分析。數據通過Student's t-test 分析,並以p 值小於0.05 判斷具有統計學顯著差異。
結果:總共50 位患者的57 個植體分別為22 個CAD/CAM 客製化支台體與35 個原廠預製支台體。相比之下,預製支台體似乎具有更穩定的邊緣骨水平高度;在功能負載1 個月(p =0.037)、3 個月(p = 0.020)、6 個月(p = 0.013)與12 個月(p = 0.001)後,客製化支台體的邊緣骨水平高度改變量顯著大於原廠預製支台體。
結論:在任何時期,遠心邊緣骨水平高度皆低於近心邊緣骨水平高度。除此之外,客製化支台體的邊緣骨水平高度改變量顯著大於原廠預製支台體。客製化支台體在功能負載12 個月後的邊緣骨水平高度略低於原廠預製支台體,但不具統計學顯著差異,沒有發現臨床的顯著差異。
URI
https://handle.ncl.edu.tw/11296/54fhnb
https://203.71.86.71/handle/123456789/10756

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