以聚醚酮酮（PEKK）製作之活動局部義齒牙鈎的固位力研究

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題名:	以聚醚酮酮（PEKK）製作之活動局部義齒牙鈎的固位力研究 Study on the retention of the clasps of removable partial dentures made of polyetherketoneketone(PEKK)
作者:	黃芃茜 HUANG, PENG-CHIEN
貢獻者:	牙體技術學系碩士班李薇芳
關鍵詞:	聚醚酮酮;活動局部義齒;牙?;固位力;彎曲強度 Polyetherketoneketone(PEKK);Removable Partial Denture;Clasp;Retention force;Bending strength
日期:	2022-07-13
上傳時間:	2022-10-20 15:57:39 (UTC+8)
摘要:	研究目的：近年來，新型熱塑性聚合物材料聚醚酮酮（polyetherketoneketone；PEKK）引入牙科領域，是個新的研究課題。本研究通過20年使用年限的臨床模擬戴入與移除測試來評估PEKK熱塑性樹脂牙?的固位力，試圖尋求理想的活動局部義齒（Removable Partial Denture；RPD）新型材料。研究方法：本研究以市售上顎第一象限後牙區域的部分牙弓為主模型，將固位臂設計兩種不同尺寸（分別組別1-寬度：1.1-2.5mm厚度：1.1-1.3mm；組別2-寬度：1.5-3.0mm厚度：1.5mm）及三種不同倒凹深度（分別是0.25mm和0.5mm和0.75mm）之RPD的亞克斯牙?（Akers clasp）。通過電腦輔助設計和製造（Computer aided design/manufacturing；CAD/CAM）銑削由PEKK材料製作而成的RPD牙?（每組五個，共有30個研究試片），並藉由疲勞性質與固位力試驗評估牙?的固位性。使用兩因子變異數分析（Two-way ANOVA）與Tukey’s多重比較檢定（Tukey’s multiple comparison test）進行分析比較（p <0.05）。結果：首先，本研究將不同尺寸的固位臂進行固位力比較，發現在組別2初始循環的固位力數值（2.80-3.51 N）表現出比組別1（2.40-3.36 N）更好的固位性。由此可得，固位臂尺寸的設計對牙?固位力有顯著影響。接下來，本研究將組別2的固位臂設計成不同倒凹量，進行固位力比較。由實驗數據可得，進入更深的倒凹量（0.75mm）的固位力（N）相較0.25mm與0.5mm高。此試驗印證，過去的文獻結果，以更深倒凹量設計的熱塑性樹脂牙?，較能獲的臨床可接受的固位力；除此之外，所有組別的初始循環固位力數值相較起來有顯著差異（p <0.043）。結論：據研究顯示，高分子材料經過30,000次的牙?戴入與移除試驗後，仍保有一定的固位力；且透過不同倒凹量的模型實驗數據可以證實，牙?的倒凹深度經適當設計，能有效提升固位力。由於新型PEKK材料的實務應用對於牙科領域相對陌生，期許本研究針對PEKK材料應用在RPD牙?的相關機械性質探討，能夠深入了解創新RPD材料的特性，以供作牙科臨床應用參考。 Research purposes：In recent years, the introduction of new a thermoplastic polymer material polyetherketoneketone(PEKK) into the field of dentistry is a new research topic.In this study,the retention of PEKK thermoplastic resin clasps was evaluated through a 20-year clinical simulated insertion and removal test in an attempt to find an ideal new material for Removable Partial Denture(RPD). Research methods：In this study, part of the dental arch in the posterior teeth area of the first quadrant of the upper jaw was used as the main model,and the retention arms were designed with two different sizes(respectively, group 1 width：1.1-2.5mm and thickness: 1.1-1.3mm; Group 2 Width：1.5-3.0mm and thickness: 1.5mm) and three different undercut depths(0.25mm and 0.5mm and 0.75mm, respectively) for the RPD's Akers clasp.RPD clasps made of PEKK material were milled by Computer aided design/manufacturing(CAD/CAM).The force test assessed the retention of the clasp. Analytical comparisons were performed using Two-way ANOVA with Tukey's multiple comparison test(p <0.05). Results：First,this study compared the retention force of different sizes of retention arms,and found that the retention force values in the initial cycle of group 2(2.80-3.51 N) showed better results than those of group 1(2.40-3.36 N).It can be seen that the design of the retention arm size has a significant impact on the retention force of the dental clasp. Next, in this study, the retention arms of group 2 were designed with different undercuts to compare the retention forces. From the experimental data, the retention force(N) into a deeper undercut(0.75mm) was higher than those of the 0.25mm and 0.5mm undercuts. This test confirms the past literature results that thermoplastic resin clasps designed with deeper undercuts can achieve more clinically acceptable retention levels; In addition, the initial cyclic retention values for all groups were compared, and the results showed here was a significant differences(p <0.043). Conclusion：Since the practical application of new PEKK materials is relatively unfamiliar to the dental field, it is hoped that this study will explore the mechanical properties of PEKK materials used in RPD dental clasps, so as to gain a deeper understanding of the characteristics of innovative RPD materials and provide a reference for clinical applications in dentistry.
描述:	碩士指導教授:李薇芳委員:李薇芳委員:彭珮雯委員:陳玫秀
資料類型:	thesis
顯示於類別:	[牙體技術學系] 博碩士論文

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