【摘要】：目的:比較和分析Vita Mark II與2種全瓷系統(tǒng)飾瓷的結(jié)合強(qiáng)度。方法:將Vita Mark II瓷塊切割成8 mm×6 mm×2 mm試件20個(gè),隨機(jī)分成2組(n=10),分別在其表面燒結(jié)飾瓷VM9和Titankeramik,用萬(wàn)能試驗(yàn)機(jī)測(cè)定剪切強(qiáng)度,掃描電鏡(SEM)觀察結(jié)合界面的形貌和構(gòu)象,熱場(chǎng)發(fā)射掃描電鏡(FE-SEM)對(duì)結(jié)合界面進(jìn)行元素定性分析。結(jié)果:VM9組和Titankeramik組剪切強(qiáng)度(MPa)分別為:36.92±7.6和41.02±9.40(P0.05);各組試件破壞模式均以基底瓷破壞為主,SEM觀察顯示2種飾瓷材料在界面區(qū)與Mark II瓷塊鑲嵌融合,結(jié)合緊密無(wú)間隙。FE-SEM分析表明界面區(qū)Al元素質(zhì)量分?jǐn)?shù)呈梯度變化,由基底瓷向飾面瓷Al的質(zhì)量分?jǐn)?shù)逐漸下降,提示基底瓷中Al有越過(guò)界面相互滲透的現(xiàn)象。結(jié)論:VM9和Titankeramik飾瓷與Vita mark II的結(jié)合強(qiáng)度均能滿足臨床需要。
[Abstract]:Objective: to compare and analyze the bonding strength between Vita Mark II and two kinds of all-ceramic system ornaments. Methods: 20 Vita Mark II porcelain pieces were cut into 8 mm 脳 6 mm 脳 2 mm specimens and randomly divided into two groups (n 鈮，

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