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| 題 名 | Comparison of Two Heat-Pressed All-Ceramic Crown Systems=兩種壓鑄式全瓷修復系統的比較 |
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| 作 者 | 蔡婷婷; 洪純正; 陳正慧; 侯桂林; 王震乾; 蔡菁芳; 賴珮翎; 蔡吉政; | 書刊名 | The Kaohsiung Journal of Medical Sciences |
| 卷 期 | 20:7 2004.07[民93.07] |
| 頁 次 | 頁341-346 |
| 分類號 | 416.98 |
| 關鍵詞 | 壓鑄; 全瓷; 邊緣貼合度; Full ceramics; Heat-pressed; Marginal discrepancy; |
| 語 文 | 英文(English) |
| 中文摘要 | 因牙齒美觀的需求日益受到重視,除了避免口內採用金屬修復體外,更突顯出全瓷冠的重要性。製作全瓷冠有好幾個方法;其中以熱壓鑄法最為簡單,製作出的贗復物與傳統燒瓷法比較不僅氣泡少且質地均勻,並且沒有燒瓷時可能的收縮。目前市面上幾種壓鑄式全瓷系統,都有各自專用的壓鑄爐及專用壓鑄瓷塊。本研究的目的在探討是否可能採用一種壓鑄爐製作不同系統之全瓷贗復體並比較兩種具代表性全瓷熱壓鑄系統以外染法製作的修復體其邊緣貼合度和硬度。以 X-ray diffraction 分析儀分析未經壓鑄前的瓷塊成分。Finesse All-Ceramic 及 OPC 3G 的全瓷試片均以 MULTIMAT Touch & Press Porcelain Pressing Furnace 壓鑄,此壓鑄爐為 Finesse 全瓷系統專用。以暫時黏著劑將 mesio-occluso-distal 嵌體黏著在單齒模上,以 3-D 自動掃描儀測量邊緣縫隙。以微硬度測試機測量其硬度。以 Wilcoxon rank sum test 分析數據。X-ray diffraction 分析結果顯示 Finesse?瓷塊含有白榴石 (KAlSi2O6);而 OPC 3G 瓷塊含有雙矽鋰化物 (Li2Si2O5)。有關邊緣貼合度方面,Finesse 顯著低於 OPC 3G (62.5 ± 15.5 vs 99.4 ± 11.6 μm; p < 0.05)。至於硬度方面 Finesse,OPC 3G 兩者並無顯著差異 (613.8 ± 49.2 vs 660.0 ± 34.0 kgf/mm2; p > 0.05)。實驗結果顯示兩種全瓷系統的邊緣貼合度為臨床可接受的程度。並且使用同一壓鑄爐壓鑄不同系統之全瓷系統是可行的。 |
| 英文摘要 | There is increasing demand for all-ceramic crowns to improve esthetics and avoid the intraoral use of metal. There are several ways to fabricate all-ceramic prostheses. The heat-press method is easily handled, creates less porosity than the conventional powder slurry method, produces consistent quality, and avoids firing shrinkage. Each of the popular brands of heat-press ceramics has its own heat-press furnace. The purposes of this study were to determine whether it was possible to use one heat-press furnace to make different all-ceramic prostheses, and to compare the fit and hardness of two commercial heat-press all-ceramic systems made using the staining technique. Ceramic ingots were analyzed by X-ray diffraction analysis before heat press. Finesse All-Ceramic and OPC 3G specimens were both heat-pressed using a porcelain pressing furnace designed for Finesse. Mesio-occluso-distal inlays were cemented to the metal die with temporary cement. Marginal accuracy was measured using a three-dimensional coordinate measuring machine. Vickers hardness was measured using a microhardness tester. X-ray diffraction analysis of the ceramic ingots showed that the main peak position for Finesse was leucite (KAlSi2O6) and for OPC 3G was lithium disilicate (Li2Si2O5). The marginal gap for Finesse was statistically lower than that for OPC 3G (62.5 ± 15.5 vs 99.4 ± 11.6 μm; p < 0.05). There was no statistically significant difference in hardness between Finesse and OPC 3G (613.8 ± 49.2 vs 660.0 ± 34.0 kgf/mm2; p > 0.05). The marginal gaps for Finesse and OPC 3G were clinically acceptable. Therefore, it is possible to use one heat-press furnace to cast different all-ceramic systems. |
本系統中英文摘要資訊取自各篇刊載內容。