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題 名 | 瓷牙用賤金屬切應結合力之研究(6)=The Shear Bond Strength of Porcelain and Base Metal Alloys for Metal-Ceramic Crown(Ⅵ) |
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作 者 | 許金泗; 王傳啟; | 書刊名 | The Kaohsiung Journal of Medical Sciences |
卷 期 | 13:12 1997.12[民86.12] |
頁 次 | 頁721-729 |
分類號 | 416.98 |
關鍵詞 | 瓷牙; 賤金屬; 切應結合力; Shear bond strength; Metal crown; Microstructures; |
語 文 | 中文(Chinese) |
中文摘要 | 賤金屬已廣泛使用於牙科贋復物,因價格便宜,硬度強並具有抗張力及良好的彈性係數。而含鈹之賤金屬流動性好,易於鑄造而增加金屬冠邊緣之密合度,又可影響金屬表面之氧化層及瓷層與金屬間之結合強度。金屬熱處理(除氣)之功用為去除氣泡,有機物及產生氧化層。結合劑和金結合劑會影響瓷層與金屬間之結合力。本實驗採用四種賤金屬(二種含鈹合金,二種不含鈹合金),使用結合劑和金結合劑及不使用上例二種結合劑,以掃描式電子顯微鏡觀察瓷層與結合劑,金屬基質臨界面之顯微結構及結合情形,以萬能測試機測定含鈹和不含鈹金屬使用結合劑及金結合劑及不使用上列二種結合劑和氧化層去除或保留等不同結合條件,作瓷層與金屬間切應結合力之測定並探討瓷層與金屬間斷裂之方式。其結果如下: 1.氧化層去除或保留對結合力沒有影響(p > 0.05)。 2.採用不同合金,其結合力最大是合金Wiron 88,爾後依序為合金Unibond、合金Unitbond、合金Rexillium III。合金Wiron 88結合力與其他三種合金比較,有統計學上之差異(p < 0.05)。 3.採用不同結合劑,其結合力最大是結合劑加金結合劑,依序為結合劑、不透明瓷層(不使用任何結合劑),金結合劑。使用結合劑加金結合劑與結合劑,在統計學上沒有顯著差異(p > 0.05),但與不透明瓷層及金結合劑,有統計學上差異(p < 0.05)。 4.Vita瓷粉之結合力比Unibond瓷粉結合力大,兩者在統計學上有顯著差異(p < 0.05 )。 5.採用不透明瓷層(不使用任何結合劑),結合力最大是合金Wiron 88,依序為合金Unitbond、合金Rexillium III、合金Unibond。合金Wiron88之結合力與其他三種合金結合力,統計學上有顯著差異( p < 0.05 )。採用不透明瓷層時,Vita 瓷粉之結合力比Unibond瓷粉之結合力大,兩者在統計學上有顯著差異(p < 0.05)。 6.採用結合劑時,結合力最大是合金Wiron 88,依序為合金Rexil-lium III、合金Unitbond、合金Unibond。合金Wiron 88之結合力與其他三種合金,在統計學上有顯著差異(p < 0.05)。採用結合劑時,Vita瓷粉之結合力比Unibond瓷粉之結合力大,兩者在統計學上有顯著差異(p < 0.05)。 7.採用結合劑和金結合劑時,祇有瓷粉對結合力有顯著影響(p < 0.05)。Vita瓷粉之結合力比Unibond瓷粉之結合力大,兩者在統計學上有顯著差異(p < 0.05)。 8.採用金結合劑時,不論何種合金與瓷粉均沒有結合力。 |
英文摘要 | The popularity of base metal alloy for porcelain fused to a metal crown and bridges has increased recently because of lower price, superior yield strength and modulus of elasticity (rigidity). The use of these alloys give them the potential advantage of thinner coping with less material and the required rigidity for long-span fixed partial dentures. The addition of beryllium to base metal alloys increases fluidity and improves casting fit. Beryllium also controls surface oxidation and bonding strength. Oxidation heat treatment of the metal is used to remove entrapped air, eliminate organic material and form the metal oxidized layer. The bonding agent and gold bonding agent also affect the bonding strength between porcelain and metal alloys. Four commercially available ceramic base alloys (two alloys contain beryllium element, another two do not) are studied. The purposes of this investigation are to test the shear bond strength between porcelain and metal alloy under different conditions (oxidized layer removed or not, gold bonding agent and uniseal bonding agent used in combination, separately or not at all). The following results were obtained: 1. Whether the oxidized layer was removed or not did not have a significant effect on the bond strength of porcelain (p>0.05). 2. When different metal alloys was used, Wiron 88 alloy showed significantly the best bond strength of all alloys tested (p<0.05). 3. When different bonding agent were used, the combination of bonding agent and gold bonding agent showed the best bond strength of all bonding agents tested. It showed a significantly higher bonding strength than opaque layer and gold bonding agent. 4. Vita porcelain powder showed a significantly higher bond strength than did Unibond porcelain (p<0.05). 5. When opaque layer was used and when no bonding agent was used, the porcelain powder significantly affected the bond strength (p<0.0001). The Vita porcelain showed a significantly higher bond strength than did Unibond porcelain. Wiron 88 alloy showed significantly the high bond strength than Rexillium Ⅲ alloy (p<0.05). 6. When bonding agent was used, the porcelain powder and alloy significantly affected bond strength. The Vita porcelian showed a significantly higher bond strength than did Unibond porcelain. Wiron 88 alloy showed significantly the best bond strength than other alloys Wiron (p<0.05). 7. When bonding agent and gold bonding agent were used, the porcelain powder significantly affected the bond strength (p<0.05). The Vita porcelain showed a significantly higher bond strength than did Unibond porcelain (p<0.05). 8. When gold bonding agent was used, there was not any bond strength between metal and powder. |
本系統中英文摘要資訊取自各篇刊載內容。