臺灣博碩士論文加值系統

光聚合樹脂在牙科的應用佔有重要的角色，本研究目的是探討不同光照模式對複合樹脂之聚合度、硬度，與樹脂軟化程度之影響。實驗設計四種不同光照模式：低強度連續照射、高強度連續照射、ramp curing technique和pulse-delay curing technique來照射樹脂。利用傅立葉紅外線吸收光譜儀計算其聚合度。使用微硬度測試機測試樹脂硬度與浸泡酒精後軟化的情形。用SPSS統計軟體以one-way ANOVA和相關分析來探討不同照射模式之間的差異。結果發現pulse-delay curing technique在樹脂底面聚合度較差。而低強度連續照射其底面的硬度值最低。樹脂被酒精軟化程度最少的為ramp curing technique，亦即有最強的交聯結構。結論是使用ramp curing technique可以得到最好的聚合度、硬度，與交聯結構。

Objective. The purpose of this study was to investigate the effect of light-curing protocol on degree of conversion (DC), and softening of dental composite polymers.
Methods. Different curing-protocols were used to investigate the influence of power density and mode of cure on the properties. The modes of cure were continuous with different power intensity, ramp, and pulse-delay irradiation. Degree of conversion was measured by Fourier transform infrared spectroscopy (FTIR). Softening of composite polymers was measured with microhardness before and after ethanol storage. Data were submitted to one-way ANOVA, and correlation analysis with SPSS software.
Results. Modes of cure influenced the degree of conversion, microhardness and softening of the polymer. Pulse-delay mode has lower degree of conversion on the bottom of resin. Compare lower power density in continuous mode to other curing modes: lower power density in continuous mode resulted in decreased microhardness of bottom surfaces. Ramp-curing mode has the least softening of composite resin.
Conclusion. The ramp curing mode has the best overall performances of degree of conversion, microhardness and softening in ethanol.

中文摘要 ---------------------------------------------------5
英文摘要 ---------------------------------------------------6
第一章
前言-------------------------------------------------------7
第二章
文獻回顧---------------------------------------------------8研究目的---------------------------------------------------18
第三章
研究材料與方法----------------------------------------------19
研究結果---------------------------------------------------22
第四章
討論------------------------------------------------------29
結論------------------------------------------------------42
參考文獻---------------------------------------------------43
附錄
表--------------------------------------------------------48圖--------------------------------------------------------60

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