Influence of marginal configuration and porcelain addition on the fit of In-Ceram crowns
Influence of marginal configuration and porcelain addition on the fit of In-Ceram crowns
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DOI：
10.1016/0142-9612(95)00302-9
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发表时间：
1996-10-01
期刊：
影响因子：
14
通讯作者：
Setchell, DJ
中科院分区：
文献类型：
--
作者：
Shearer, B;Gough, MB;Setchell, DJ
在一项实验室研究中对In-Ceram冠和冠的适合性进行了研究。使用了两种方法，一种是直接切片技术，另一种是使用加成固化聚乙烯基硅氧烷印模材料的水泥模拟技术。前一种方法涉及40个牙冠，在其各自的电铸银模具上进行粘结和切片。对于第二种方法，将80个类似物包埋并切片。所有测量均使用Reflex显微镜进行。这表明in-Ceram牙冠和内冠与边缘开口配合良好，范围为1至63 μ m，平均值为19 μ m。倒角边缘和肩部边缘之间的拟合没有显著差异。在In-Ceram内冠中添加陶瓷和构建牙冠时重复烧制循环不会改变适合性。可以得出结论，与其他冠类型相比，In-Ceram冠适合。(C)1996年爱思唯尔科学有限公司
The fit of In-Ceram copings and crowns was investigated in a laboratory study. Two methods were used, one a direct sectioning technique and the other a cement analogue technique using addition-cured polyvinylsiloxane impression material. The former method involved 40 crowns cemented and sectioned on their respective electroformed silver dies. For the second method, 80 analogues were embedded and sectioned. All measurements were made using a Reflex microscope. This showed in-Ceram crowns and copings to fit well with marginal openings and ranging from 1 to 63 mu m and a mean of 19 mu m. No significant difference in fit was found between chamfer margins and shoulder margins. The addition of porcelain to the In-Ceram coping and repeated firing cycles involved in building a crown did not alter the fit. It is concluded that In-Ceram crowns fit well in comparison to other crown types. (C) 1996 Elsevier Science Limited