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  5. 複合式製程製備二矽酸鋰贗復物之性能提升研究
 
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複合式製程製備二矽酸鋰贗復物之性能提升研究

Other Title
Research on Performance Improvement of Lithium Disilicate Prostheses Prepared by Hybrid Process
Type
thesis
Date Issued
2023-01-09
Author(s)
林昱佑
Advisor
林中魁 ; 陳彥州
Subjects
系所名稱:醫學科學研究所碩士班
Description
學位別:碩士
語文別:中文
口試委員:張榮善 Chang, Jung-shan;陳瑞明 Chen, Ruei-Ming;林中魁 Lin, Chung-Kwei
授權範圍:開放校內, 開放日期為2023-01-19;校外, 開放日期為2028-01-19
Abstract
二矽酸鋰(Li2Si2O5)是目前牙科贋復物常用的一種陶瓷材料,其主要能提供優秀的美學特性、生物相容性及良好的機械性能;目前,二矽酸鋰製備贋復物之製程可分傳統及數位為兩種方式,傳統上以熱壓鑄方式製備,所得贋復物強度較高;而以先進數位(CAD/CAM)方式製備,則能夠大幅的節省時間,但強度稍有不足。本研究將結合傳統壓鑄強度較佳與數位製程節省時間之優點,以複合式製程製備二矽酸鋰贋復物,並進行相關特性研究;此外,我們也在贋復物上釉製程中進行改質,於釉料中加入0-7%抗菌粉體,探討塗佈抗菌釉層二矽酸鋰贋復物之生物相容性與抗菌性能。
本研究製作之二矽酸鋰樣品將進行X光繞射分析與掃描式電子顯微鏡等結構分析、微硬度與破斷韌性之機械性質檢測、透過生物相容性與抗菌實驗確認其可使用性,最後檢驗其光學特性與贋復物精準度評估臨床應用上之可行性。實驗結果顯示:傳統、數位與複合式三種製程所製備之二矽酸鋰,含二矽酸鋰柱狀結晶與非晶質玻璃相,具有相同的結晶結構。而傳統與複合式製程使用熱壓鑄製備之二矽酸鋰,機械性質優於數位製備。抗菌處理之二矽酸鋰皆具有良好之生物相容性且抗菌效果隨抗菌粉添加量增加而提昇,但會降低二矽酸鋰之光學特性,添加5%以下的抗菌粉,光學性質變化無法以肉眼察覺。三種不同方式製作之二矽酸鋰贋復物皆能夠滿足臨床要求,其中複合式製程誤差最小。本研究所得之最佳製程參數為:複合式製程製備贋復物,再以添加3%抗菌粉釉料表面處理,所得二矽酸鋰具有良好之機械機能、抗菌效果與光學性能。
URI
https://handle.ncl.edu.tw/11296/97w733
https://203.71.86.71/handle/123456789/10269

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