表面處理對鈦合金與瓷結合強度的影響

近??牙科膺??屬如?、鉑、鈀等原物?價格節節攀升，且鎳?屬可能導至過敏症?，因此許多研究朝向尋找低?且具生物相容性的替代?屬，而在?床牙科植體已成功應用二十多?的鈦?屬其優?的機械特性與生物相容性吸引研究者?續投入鈦?屬在牙冠牙橋的研究。最近的研究發現鈦合?化?僅能?低熔點並能改善純鈦??於加工的機械性質，特別是近??研究發現β-穩定相鈦合?非常適用於生醫?域，另外一方面也有研究朝向改變?屬表面形態，? 用各種?同的表面處?方式增加化學或機械結合?。本研究乃延續本實驗室鈦合?之開發，在?同添加比?的合?中選擇具較佳機械性質的Ti-10Zr、Ti-20Cr合?進?噴砂及電化學沉積二氧化鋯等?同的表面處?並燒附陶瓷，另一方面也進??熱疲?測試，藉以比較各種表面處?對燒瓷結合強?的影響以及各組樣品經?熱循環測試後結合?的變化，並以XRD 觀察合?經重複熱處?後是否有化合物析出。實驗結果顯示噴砂處?在各合?與純鈦實驗組中?能有效提升鈦瓷的結合強?， Ti-20Cr 噴砂處?與陶瓷結合?受?熱循環20,000 次影響，其結合強?是所有實驗組中最高者，以XRD 繞射分析發現Ti-20Cr 經熱處?後有化合物析出。

關鍵字

表面處? ； ?熱循環測試；鈦；鈦合?

並列摘要

Titanium has been successfully applied in dental implants for more than 20 years and has raised interest in the possibility of crown/bridge application because of its excellent mechanical properties and biocompatibility. Recent research has found that titanium alloys not only have reduced the melting points but also improved mechanical properties. In particular, β-stable alloys are very suitable for biomedical applications. A number of different surface treatments on titanium have been shown to enhance the chemical and mechanical bonding. This investigation aims to build on previous studies of the development of new titanium alloys. Ti-10Zr and Ti-20Cr alloys were chosen for the research because of their superior mechanical performance compared to other Ti alloys which were tested in previous experiments. Sandblast, electrochemical deposition of ZrO2 and the combination are applied onto the metal surfaces prior to firing porcelain. Thermalcycling was also utilized to compare the bond strengths among the different surface treatments. Besides, XRD patterns were taken to verify the phases and compounds before and after heat treatment. Results indicated that sandblast treatment was able to effectively improve bond strength to experimental metals, and the adherence compatibility of sandblasted Ti-20Cr alloy had the highest value among this study, it also did not effect by 20,000 thermalcycles. There α phase and other compounds were generated after heat treatment of Ti-20Cr alloy.

並列關鍵字

surface treatments ； thermalcycling ； titanium alloys ； titanium

參考文獻

[2] 馬文．?格著，陳銘助譯。牙齒的故事：圖?牙醫史。城邦文化事業股份有限公司。2005; p15-278。

[51] ?宗男，電漿熔射PSZ 介層對牙科瓷與純鈦介面強?之效應研究，成功大學材?科學與工程學系，2005。

[42] K. J. Anusavice. Phillips’ Science of Dental Materials. W.B. Saunders Company. 1996; p583-630

[1] R. G. Craig, J.M. Powers. Restorative Dental Materials. C.V. Mosby. 2001; p4-17.

[3] W. Geurtsen. Biocompatibility of dental casting alloys. Critical Reviews in Oral Biology and Medicine. 2002; 13(1): 71-84.

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表面處理對鈦合金與瓷結合強度的影響

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